# Professor Nilanjan Chakraborty

Professor of Fluid Dynamics

- Email: nilanjan.chakraborty@ncl.ac.uk
- Telephone: +44(0)191 208 3570

## Background

**Google Scholar Profile **

**Personal profile **

Prof. Nilanjan Chakraborty joined the School of Mechanical and Systems Engineering of Newcastle University in July 2011 where he heads the Fluid Dynamics and Thermal Systems research group. Previously he was a senior lecturer at the School of Engineering of the University of Liverpool. He joined University of Liverpool as a lecturer in 2005 and was promoted to a senior lectureship in 2008.

He graduated in Mechanical Engineering in 1999 from Jadavpur University, Calcutta with First Class Honours and with a University First Rank (Gold medal) in Bachelor of Mechanical Engineering. In the same year he obtained an All India First Rank in the Graduate Aptitude Test in Engineering Examination (GATE). He did his Masters degree (ME) in Mechanical Engineering with a specialisation in Computational Heat and Fluid Flow from the Indian Institute of Science (IISc.), Bangalore, with a University First Rank (Gold medal with senate commendation). In this Masters project he worked on the Reynolds Averaged Navier Stokes (RANS) simulation modelling of turbulent transport in weld-pool convection. He gained industrial experience as a Mechanical Engineer in General Electric (GE), India before getting the prestigious Gates Cambridge Scholarship for pursuing a PhD at Cambridge University. In Cambridge. The title of his doctoral thesis is 'Fundamental Study of Turbulent Premixed Combustion using Direct Numerical Simulation'.

His research interests include Direct Numerical Simulation (DNS) of Turbulent Combustion, Large Eddy Simulation (LES) combustion modelling, natural convection of non-Newtonian fluids, Melting/Solidification related heat transfer problems in classical manufacturing (e.g. Casting, Welding) and Laser aided manufacturing applications (e.g. Laser Surface Alloying). In September 2005, he was awarded the prestigious Gaydon Prize along with his co-authors for the most significant UK contribution to the 30th International Combustion Symposium, 2004. In September 2007, he was awarded the prestigious Hinshelwood Prize for 2006 by the British Section of Combustion Institute for his meritorious contribution to combustion science. A paper co-authored by Prof. Chakraborty presented in the droplet colloquium in the 32nd International Combustion Symposium was given the distinguished paper award by the Combustion Institute. He is the nominated leader and Principal Investigator of the UK Consortium on Turbulent Reacting Flows, as well as a steering group member of N8 Supercomputer shared by Russell group universities in the north of England. He is a member of the Engineering and Physical Science Research Council (EPSRC)'s Peer-Review College, which helps EPSRC in the review of grant proposals and panel decisions. Prof. Chakraborty is one of the recipients of the prestigious Hind Rattan award 2015, which is one of the highest Indian awards given to people of Indian origin for outstanding contribution in their field of work by the Non-Resident Indian Welfare Society of India, an organisation under the umbrella of the Indian Government. To date, he published 166 papers in peer-reviewed journals and 120 conference publications. His citation record is given by a h-index of 34 (source Google scholar).

**Higher Education**

**2001-2004: **PhD (Engineering), Cambridge University, U.K.

**Dissertation title: ***Fundamental study of turbulent premixed combustion using Direct Numerical Simulation*(DNS)

**1999-2001: **M.E. (Mechanical Engineering), Indian Institute of Science, Bangalore, India

**Project title: ***A k-*ε *model for turbulent convection in Gas Tungsten Arc Weld pools*

**Class: **First with honours, **Rank: **1st, Faculty topper, Record CGPA: 8.0/8.0,Gold Medallist, Recipient of Senate commendation for outstanding performance in Masters of Engineering.

**1995-1999: **B.E. (Mechanical Engineering), Jadavpur University, Kolkata, India

**Class: **First with honours, **University rank: **1st, Gold medallist, Special prizes for scoring highest marks in Fluid Machinery and Machine Tools.

**Fellowships and scholarships**

**2004-2005: **Mini Rouse-Ball grant for PhD. dissertation in the Trinity College Junior Research Fellowship Competition.

**2001-2004: **Gates Cambridge Scholarship for PhD in Engineering (University of Cambridge)

**2001-2004: **Overseas Research Students’ (ORS) Award.

**1999-2001: **National scholarship for Masters degree in Engineering

**1994-1996: **National scholarship of merit (India)

**Honours, Prizes and Grants **

**2017: ****UK-Gulf Institutional Links 2016 grant:** A combined experimental and numerical investigation of ignition probability of turbulent inhomogeneous biogas-air mixtures

**2017: ****EPSRC research grant EP/P022286/1:** Adaptive software for high-fidelity simulations of multi-phase turbulent reacting flows (PI)

**2017: ****Japanese Society of Promotion of Science short term fellowship: **Collaborative research with Kiyoto University on multi-phase combustion

**2016: Newton research collaboration grant: **"Enhanced heat transfer and mixing by mixed convection of yield stress fluids in cylindrical container with rotating end wall."** **

**2015: Portuguese research council grant: **"Advanced numerical techniques for pulverized biomass combustion modelling"

**2015: Hind-Rattan Award **given to people of Indian origin for outstanding contribution in their field of work by the Non-Resident Indian Welfare Society of India, an organisation under the umbrella of the Indian Government

**2013: EPSRC research grant EP/K025163/1: **"High Performance Computing support for UK consortium on turbulent reacting flows"

**2012: EPSRC research grant EP/J0/21997: **"Fundamental understanding of turbulent flame propagation in droplet-laden mixtures" (PI)

**2012: ** **EPSRC research grant EP/J00/3573: **"Towards In-Combustion-Event Feedback (ICEF) Control by Laser Ignition" (CI).

**2011: EPSRC research grant EP/IO/28013: **"Large Eddy Simulation modelling of scalar dissipation rate based reaction rate closure in turbulent premixed flames" (PI)

**2009: Distinguished paper award **given by the International Combustion Institute for the paper entitled “Direct Numerical Simulation of turbulent flame expansion in fine sprays” authored by A. Wandel, N. Chakraborty and E. Mastorakos in the Spray Combustion Colloquium of the 32nd International Combustion Symposium.

**2008: EPSRC research grant EP/G0088441: **"Development of Unified Flame Surface Density Based Reaction Rate Models for the LES of Turbulent Premixed Flames"(PI)

**2007: Hinshelwood Prize **given by the British Combustion Institute for the most significant contribution by a young researcher to the field of combustion science.

**2007: Knowledge Transfer Partnership **(KTP) project on designing new generation cryogenic tank (CI)

**2006: EPSRC research grant EP/E026516/1**: "Theoretical Investigation of Turbulent Combustion in Stratified Inhomogeneous Mixtures using Direct Numerical Simulation" (PI)

**2006: Research grant for new lecturers from the Nuffield Foundation (NAL/32607)**:Numerical Investigation of spark ignition in non-premixed jets using Direct Numerical Simulation.

**2006: C.R. Barbar Trust grant **from Institute of Physics for attending the 31^{st}International Combustion symposium.

**2005: Gaydon Prize **given by the British Combustion Institute for the most significant UK contribution to the 30th International Symposium of Combustion, 2004 (shared with Drs. S. Gashi, J. Hult, K.W. Jenkins, C. Kaminski and R. S. Cant).

**2004: Mini Rouse-Ball grant **for PhD. dissertation in the Trinity College Junior Research Fellowship Competition.

**2002: Gold medal and Senate commendation **for outstanding performance in Masters of Engineering in Indian Institute of Science.

**1999: **Special medals for the highest marks in Fluid Machinery and Machine Tools in B.E. Examination in Jadavpur University.

**1999: University Gold medal **for the first rank in B.E. Examination in Jadavpur University.

**Employment Record**

**2011: July To date: Professor of Fluid Dynamics **in the School of Mechanical and Systems Engineering, University of Newcastle.

**2008-2011 June: Senior lecturer **in the School of Engineering, University of Liverpool.

**2005- 2008: Lecturer **in the School of Engineering, University of Liverpool.

**2004-2005: Post-doctoral Research Associate **in Cambridge University Engineering Department (CUED), working on numerical investigation of spark ignition in inhomogeneous reactants in a research project funded by Rolls Royce Plc., UK.

**2001 Feb-Sept.: Mechanical Engineer **in John F. Welch Technology Centre, General Electric, India. Part of the Computational Fluid Dynamics team in Mechanical Systems Laboratory, working on CFD projects on conjugate heat transfer and flow through intercooler for GE Power Systems and GE Transport Systems.

**Membership of Professional Bodies**

- Member of British Combustion Institute
- Member of British Combustion Consortium
- Member of Institute of Physics (MinstP) , United Kingdom

## Research

#### Research Interests

Prof Chakraborty’s research interests include:

- Direct Numerical Simulation (DNS) of turbulent combustion,
- Large Eddy Simulation (LES) and Reynolds Averaged Navier Stokes Simulation (RANS) combustion modelling,
- natural convection of non-Newtonian fluids,
- melting/solidification related heat transfer problems in classical manufacturing and laser aided manufacturing applications.

To date his research has been supported by research grants from EPSRC, Nuffield Foundation and Knowledge Transfer Partnerships. In September 2005, he was awarded the prestigious Gaydon Prize along with his co-authors for the most significant contribution to the 30th International Combustion Symposium, 2004.

In September 2007, he was awarded the prestigious Hinshelwood Prize for 2006 by the British Section of Combustion Institute for his meritorious contribution to combustion science. A paper co-authored by Prof. Chakraborty presented in the droplet colloquium in the 32nd International Combustion Symposium was given the distinguished paper award by the Combustion Institute.

To date, he published 166 papers in peer-reviewed journals and 120 conference publications. His citation record is given by a h-index of 34 (source Google Scholar).

## Teaching

**Teaching Interests **

Thermodynamics, Fluid Mechanics, Heat Transfer, Turbulence, Combustion, Computational Fluid Dynamics (CFD)

## Publications

- Klein M, Kasten C, Chakraborty N.
*A-priori*Direct Numerical simulation assessment of models for generalized sub-grid scale turbulent kinetic energy in turbulent premixed flames.*Computers and Fluids*2017,**154**, 123-131. - Lipatnikov AN, Sabelnikov V, Chakraborty N, Nishiki S, Hasagawa T. A DNS study of closure relations for convection flux in transport equation for mean reaction rate.
*In: 10th Mediterranean Combustion Symposium*. 2017, Napoli, Italy. In Press. - Klein M, Kashtanov R, Chakraborty N. Alternative definition of wrinkling factor in the context of FSD based LES modelling of turbulent premixed combustion.
*In: 10th Mediterranean Combustion Symposium*. 2017, Napoli, Italy. In Press. - Allauddin U, Klein M, Pfitzner M, Chakraborty N. A-priori and a-posteriori analysis of algebraic flame surface density modeling in the context of Large Eddy Simulation of turbulent premixed combustion.
*Numerical Heat Transfer A: Applications*2017, (ePub ahead of print). - Lai J, Chakraborty N, Klein M. Assessment of algebraic Flame Surface Density closures in the context of Large Eddy Simulations of head-on quenching of turbulent premixed flames.
*Combustion Science and Technology*2017. In Press. - Lai J, Chakraborty N. Corrigendum to “Vorticity and enstrophy transport in head-on quenching of turbulent premixed flames”, [Eur. J. Mech. Fluids/B,DOI: 10.1016/j.euromechu.2016.10.013].
*European Journal of Mechanics / B Fluids*2017, epub ahead of print. - Turan O, Yigit S, Chakraborty N. Critical Condition for Rayleigh-Bénard Convection of Bingham Fluids in Rectangular Enclosures.
*International Communications of Heat and Mass Transfer*2017. In Press. - Lai J, Chakraborty N, Klein M. Direct Numerical Simulation of head-on quenching of statistically planar methane-air flames using a detailed chemical mechanism.
*In: 10th Mediterranean Combustion Symposium*. 2017, Napoli, Italy. In Press. - Chakraborty N, Klein M, Nachtigal H, Alwazzan D. Direct Numerical Simulations of turbulent premixed Bunsen flames at ambient and elevated pressures.
*In: 29th Parallel CFD conference*. 2017, Glasgow. - Papapostolou VS, Wacks DH, Klein M, Chakraborty N, Im HG. Distributions of flow topology and enstrophy in different turbulent premixed combustion regimes: a direct numerical simulation investigation.
*In: 16th International SIAM conference on Numerical Combustion*. 2017, Orlando, FL, USA: Society for Industrial and Applied Mathematics. - Fang J, Cant RS, Moullinec C, Emerson DS, Chakraborty N. First investigations using the HAMISH code: an adaptive mesh solver for turbulent reacting flow.
*In: 29th Parallel CFD conference*. 2017, Glasgow, UK. - Klein M, Hansinger M, Chakraborty N, Pfitzner M. Flame curvature in high pressure Bunsen flames.
*In: 10th Mediterranean Combustion Symposium*. 2017, Napoli, Italy. In Press. - Zhang P, Wang L, Chakraborty N. Flame-Wall Interaction in premixed reactive turbulence.
*In: 26th International Colloquium on Dynamics of Explosions and Reactive Systems*. 2017, Boston, USA. In Press. - Lai J, Chakraborty N. Heat flux and flow topology statistics in oblique quenching of turbulent premixed flames by isothermal inert walls.
*In: 26th International Colloquium on Dynamics of Explosions and Reactive Systems*. 2017, Boston, USA. In Press. - Dopazo C, Cifuentes L, Chakraborty N, Alwazzan D. Influence of Lewis number on effective strain rates in turbulent premixed flames.
*In: 10th Mediterranean Combustion Symposium*. 2017, Napoli, Italy. In Press. - Yigit S, Chakraborty N. Influences of aspect ratio and wall boundary condition on laminar Rayleigh-Bénard convection of Bingham Fluids in rectangular enclosures.
*International Journal of Numerical Methods in Heat and Fluid Flow*2017,**27**(2), 310-333. - Yigit S, Chakraborty N. Influences of aspect ratio on natural convection of power-law fluids in cylindrical annular space with differentially heated vertical walls.
*Thermal Science and Engineering Progress*2017,**2**, 151-164. - Machado BD, Chakraborty N, Das PK. Influences of flow direction, temperature and relative humidity on the performance of a representative anion exchange membrane fuel cell: A computational analysis.
*International Journal of Hydrogen Energy*2017,**42**(9), 6310-6323. - Langella I, Swaminathan N, Gao Y, Chakraborty N. Large Eddy Simulation of Premixed Combustion: Sensitivity to Subgrid Scale Velocity Modeling.
*Combustion Science and Technology*2017,**189**(1), 43-78. - Im HG, Klein M, Kasten C, Chakraborty N, Arias P. Modelling of turbulent scalar fluxes in the broken reaction zones regime.
*In: 69th Annual Meeting of the American Physical Society - Division of Fluid Dynamics (DFD 16)*. 2017, Portland, OR, USA: American Physical Society. - Doan NAK, Swaminathan N, Chakraborty N. Multiscale analysis of turbulence-flame interaction in premixed flames.
*Proceedings of Combustion Institute*2017,**36**(2), 1929-1935. - Yigit S, Turan O, Chakraborty N. Natural convection of power-law fluids in rectangular cross-sectional cylindrical annular enclosures with differentially heated vertical walls.
*In: Computational Heat Transfer conference 2017*. 2017, Napoli, Italy. In Press. - Turan O, Yigit S, Chakraborty N. Numerical investigation of mixed convection of Bingham fluids in cylindrical enclosures with heated rotating top wall.
*International Journal of Heat and Mass Transfer*2017,**108**(Part B), 1850-1869. - Turan O, Chakraborty N. The comparison of the effects of top and bottom wall heating on mixed convection of yield stress fluids in a cylindrical container with rotating end wall.
*In: Computational Heat Transfer conference 2017*. 2017, Napoli, Italy. In Press. - Fang J, Moullinec C, Emerson D, Chakraborty N, Cant RS. The first investigation of the HAMISH code: An adaptive mesh solver for turbulent reacting flows.
*In: 16th International SIAM conference on Numerical Combustion*. 2017, Orlando, FL, USA: Society for Industrial and Applied Mathematics. - Lai J, Moody A, Chakraborty N. Turbulent kinetic energy transport in head-on quenching of turbulent premixed flames in the context of Reynolds Averaged Navier Stokes simulations.
*Fuel*2017,**199**, 456-477. - Dopazo C, Cifuentes L, Chakraborty N. Vorticity budgets in premixed combusting turbulent flows at different Lewis numbers.
*Physics of Fluids*2017,**29**, 045106. - Chakraborty N, Wang L, Konstantinou I, Klein M. Vorticity statistics based on velocity and density-weighted velocity in premixed reactive turbulence.
*Journal of Turbulence*2017. In Press. - Sabelnikov V, Lipatnikov A, Chakraborty N, Nishiki S, Hasegawa T. A balance equation for the mean rate of product creation in premixed turbulent flames.
*Proceedings of the Combustion Institute*2016, Epub ahead of print. - Gao Y, Minamoto Y, Tanahashi M, Chakraborty N. A priori assessment of scalar dissipation rate closure for Large Eddy Simulations of turbulent premixed combustion using a detailed chemistry Direct Numerical Simulation database.
*Combustion Science and Technology*2016,**188**(9), 1398-1423. - Lai J, Chakraborty N. A Priori Direct Numerical Simulation Modeling of Scalar Dissipation Rate Transport in Head-On Quenching of Turbulent Premixed Flames.
*Combustion Science and Technology*2016,**188**(9), 1440-1471. - Sabel'nikov V, Lipatnikov A, Chakraborty N, Nishiki S, Hasegawa T. A Transport Equation for Reaction Rate in Turbulent Flows.
*Physics of Fluids*2016,**28**(8), 081701. - Klein M, Chakraborty N, Pfitzner M. Analysis of the combined modelling of sub-grid transport and filtered flame propagation for premixed turbulent combustion.
*Flow, Turbulence and Combustion*2016, ePub ahead of print. - Patel D, Chakraborty N. Effects of Fuel Lewis Number on Localised Forced Ignition of Globally Stoichiometric Stratified Mixtures: A Numerical Investigation.
*Flow, Turbulence and Combustion*2016,**96**(4), 1083-1105. - Chakraborty N, Konstatinou I, Lipatnikov AN. Effects of Lewis number on vorticity and enstrophy transport in turbulent premixed flames.
*Physics of Fluids*2016,**28**, 015109. - Patel D, Chakraborty N. Effects of Mixture Distribution on Localised Forced Ignition of Stratified Mixtures: A Direct Numerical Simulation Study.
*Combustion Science and Technology*2016, Epub ahead of print. - Wacks DH, Chakraborty N. Flame Structure and Propagation in Turbulent Flame-Droplet Interaction: A Direct Numerical Simulation Analysis.
*Flow, Turbulence and Combustion*2016,**96**(4), 1053-1081. - Sellmann J, Lai J, Kempf AM, Chakraborty N. Flame Surface Density based modelling of head-on quenching of turbulent premixed flames.
*Proceedings of the Combustion Institute*2016, epub ahead of print. - Wacks DH, Chakraborty N, Klein M, Arias PG, Im HG. Flow topologies in different regimes of premixed turbulent combustion: A direct numerical simulation analysis.
*Physical Review Fluids*2016,**1**(8), 083401. - Wacks DH, Chakraborty N. Flow topology and alignments of scalar gradients and vorticity in turbulent spray flames: A Direct Numerical Simulation analysis.
*Fuel*2016, Epub ahead of print. - Yigit S, Chakraborty N. Laminar natural convection of Bingham fluids in square cross-sectioned cylindrical annular cavity with differentially heated vertical walls subjected to constant heat fluxes.
*Heat Transfer Engineering*2016,**38**(13), 1171-1188. - Lai JW, Chakraborty N. Modeling of Progress Variable Variance Transport in Head-On Quenching of Turbulent Premixed Flames: A Direct Numerical Simulation Analysis.
*Combustion Science and Technology*2016,**188**(11-12), 1925-1950. - Gao Y, Chakraborty N. Modelling of Lewis Number dependence of Scalar dissipation rate transport for Large Eddy Simulations of turbulent premixed combustion.
*Numerical Heat Transfer A*2016,**69**(11), 1201-1222. - Yigit S, Chakraborty N. Numerical investigation of laminar Rayleigh-Bénard convection of Bingham fluids in square cross-sectioned cylindrical annular enclosures.
*In: 9th International Conference on Computational Heat and Mass Transfer*. 2016, Krakow, Poland. - Yigit S, McRoberts C, Chakraborty N. Numerical investigation of laminar Rayleigh-Bénard convection of power-law fluids in square cross-sectional cylindrical annular enclosures.
*International Communications of Heat and Mass Transfer*2016, epub ahead of print. - Yigit S, Chakraborty N. Numerical investigation of laminar Rayleigh-Bénard convection of power-law fluids in square cross-sectioned cylindrical annular cavity.
*In: 4th International Conference on Computational Methods for Thermal Problems*. 2016, Georgia Tech., Atlanta, USA: ThermaComp. - Yigit S, Graham T, Poole RJ, Chakraborty N. Numerical investigation of steady-state laminar natural convection of power-law fluids in square cross-sectioned cylindrical annular cavity with differentially-heated vertical walls.
*International Journal of Numerical Methods for Heat and Fluid Flow*2016,**26**(1), 85-107. - Stafford CP, Swailes DC, Chakraborty N. Particle dispersion in inhomogeneous turbulence: An analysis of pdf-based models.
*In: 9th International Conference on Multiphase Flow (ICMF 2016)*. 2016, Florence: ICMF. - Yigit S, Chakraborty N. Rayleigh-Bénard power-law fluid convection in rectangular enclosures.
*Journal of Thermophysics and Heat Transfer*2016, Epub ahead of print. - Klein M, Chakraborty N, Gao Y. Scale similarity based models and their application to subgrid scale scalar flux modelling in the context of turbulent premixed flames.
*International Journal of Heat and Fluid Flow*2016,**57**, 91-108. - Wacks DH, Chakraborty N. Statistical Analysis of the Reaction Progress Variable and Mixture Fraction Gradients in Flames Propagating into Droplet Mist: A Direct Numerical Simulation Analysis.
*Combustion Science and Technology*2016, Epub ahead of print. - Wacks DH, Chakraborty N, Mastorakos E. Statistical Analysis of Turbulent Flame-Droplet Interaction: A Direct Numerical Simulation Study.
*Flow, Turbulence and Combustion*2016,**96**(2), 573-607. - Wacks DH, Malkeson SP, Chakraborty N. Statistical behaviour of fuel mass fraction variance transport in turbulent flame-droplet interaction: A Direct Numerical Simulation analysis.
*Numerical Heat Transfer, Part A: Applications*2016, Epub ahead of print. - Lai J, Chakraborty N, Lipatnikov AN. Statistical behaviour of vorticity and enstrophy transport in head-on quenching of turbulent premixed flames.
*European Journal of Mechanics - B/Fluids*2016, epub ahead of print. - Klein M, Kasten C, Gao Y, Chakraborty N.
*A-priori*Direct Numerical Simulation assessment of sub-grid scale stress tensor closures for turbulent premixed combustion.*Computers & Fluids*2015,**122**, 1-11. - Gao H, Kolla H, Chakraborty N, Chen JH, Swaminathan N. A comparison of scalar dissipation rate transport between simple and detailed chemistry based Direct Numerical Simulations.
*In: 9th Mediterranean Combustion Symposium*. 2015, Rhodes, Greece. In Press. - Klein M, Chakraborty N, Gao Y. Applications of scale similarity based models to subgrid scale scalar flux modelling in the context of turbulent premixed flames.
*In: 9th International Symposium on Turbulence and Shear Flow Phenomena (TSFP-9)*. 2015, Melbourne, Australia: University of Melbourne. In Press. - Klein M, Kasten C, Gao Y, Chakraborty N. A-priori assessment of sub-grid scale stress tensor closures for turbulent premixed combustion.
*In: 7th European Combustion Meeting*. 2015, Budapest, Hungary. In Press. - Yigit S, Poole RJ, Chakraborty N. Aspect ratio effects on laminar Rayleigh-Bénard convection of power-law fluids in rectangular enclosures: A numerical investigation.
*In: 6th International Symposium on Advances in Computational Heat Transfer*. 2015, New York, NY, USA: Rutgers University. In Press. - Langella I, Swaminathan N, Gao Y, Chakraborty N. Assessment of dynamic closure for premixed combustion large eddy simulation.
*Combustion Theory and Modelling*2015,**19**(5), 628-656. - Gao Y, Chakraborty N, Dunstan TD, Swaminathan N. Assessment of Reynolds Averaged Navier Stokes modelling of Scalar Dissipation Rate transport in turbulent oblique premixed flames.
*Combustion Science and Technology*2015,**187**(10), 1584-1609. - Gao Y, Klein M, Chakraborty N. Assessment of sub-grid scalar flux modelling in premixed flames for Large Eddy Simulations: A-
*priori*Direct Numerical Simulation analysis.*European Journal of Mechanics - B/Fluids*2015. - Gao Y, Chakraborty N, Klein M. Assessment of the performances of sub-grid scalar flux models for premixed flames with different global Lewis numbers: A Direct Numerical Simulation analysis.
*International Journal of Heat and Fluid Flow*2015,**52**, 28-39. - Lai J, Chakraborty N. Direct Numerical Simulation analysis of turbulent kinetic energy transport in head on quenching of turbulent premixed flames.
*In: 7th European Combustion Meeting*. 2015, Budapest, Hungary. In Press. - Lipatnikov A, Sabelnikov SB, Nishiki S, Hasegawa T, Chakraborty N. DNS Assessment of a Simple Model for Evaluating Velocity Conditioned to Unburned Gas in Premixed Turbulent Flames.
*Flow, Turbulence and Combustion*2015. - Gao Y, Chakraborty N, Swaminathan N. Dynamic closure of scalar dissipation rate for Large Eddy Simulations of turbulent premixed combustion: A Direct Numerical Simulations analysis.
*Flow, Turbulence and Combustion*2015,**95**(4), 775-802. - Yigit S, Poole RJ, Chakraborrty N. Effects of aspect ratio on laminar Rayleigh-Bénard convection of power-law fluids in rectangular enclosures: A numerical investigation.
*International Journal of Heat and Mass Transfer*2015,**91**, 1292-1307. - Yigit S, Poole RJ, Chakraborty N. Effects of aspect ratio on natural convection of Bingham Fluids in rectangular enclosures with differentially heated horizontal walls heated from below.
*International Journal of Heat and Mass Transfer*2015,**80**, 727-736. - Patel D, Chakraborty N. Effects of combustion regime on localised forced ignition of turbulent homogeneous mixtures: A Direct Numerical Simulation Analysis.
*In: 7th European Combustion Meeting*. 2015, Budapest, Hungary. In Press. - Wacks D, Chakraborty N. Effects of droplets on flame structure in premixed spray flames: A Direct Numerical Simulation analysis.
*In: 7th European Combustion Meeting*. 2015, Budapest, Hungary. In Press. - Patel D, Chakraborty N. Effects of energy deposition characteristics on localised forced Ignition of homogeneous mixtures.
*International Journal of Spray and Combustion Dynamics*2015,**7**(2), 151-173. - Patel D, Chakraborty N. Effects of fuel Lewis number and the energy deposition characteristics on localized forced ignition of homogeneous mixture: A numerical investigation.
*Flow, Turbulence and Combustion*2015,**96**(4), 1083-1105. - Lai J, Chakraborty N. Effects of Lewis Number on Head on Quenching of Turbulent Premixed Flames: A Direct Numerical Simulation Analysis.
*Flow, Turbulence and Combustion*2015. - Patel D, Chakraborty N. Effects of mixture distribution on localised forced ignition of stratified mixtures: A Numerical Investigation.
*In: 25th International Colloquium on Dynamics of Explosions and Reactive Systems*. 2015, Leeds, UK: University of Leeds. In Press. - Chakraborty N, Cant RS. Effects of Turbulent Reynolds number on turbulent scalar flux modelling in premixed flames using Reynolds Averaged Navier Stokes simulations.
*Numerical Heat Transfer A: Applications*2015,**67**(11), 1187-1207. - Dopazo C, Cifuentes L, Chakraborty N. Enstrophy evolution in turbulent premixed combusting flows.
*In: JJ70*. 2015, Salamanaca, Spain. - Wacks DH, Chakraborty N. Flame structure and topology in turbulent spray flames: A Direct Numerical Simulation Analysis.
*In: Clean Air 2015*. 2015, IST, Lisboa, Portugal. - Yigit S, Poole RJ, Chakraborty N. Laminar natural convection of Bingham fluids in inclined differentially heated square enclosures subjected to constant wall temperatures.
*ASME Journal of Heat Transfer*2015. In Press. - Yigit S, Poole RJ, Chakraborty N. Laminar Natural Convection of Bingham Fluids in Inclined Differentially Heated Square Enclosures Subjected to Uniform Wall Temperatures.
*JOURNAL OF HEAT TRANSFER-TRANSACTIONS OF THE ASME*2015,**137**(5). - Butz D, Gao Y, Kempf AM, Chakraborty N. Large Eddy Simulations of a turbulent premixed swirl flame using an algebraic Scalar Dissipation Rate closure.
*Combustion and Flame*2015,**162**(9), 3180-3196. - Chakraborty N. Modelling of Entropy Generation in Turbulent Premixed Flames for Reynolds Averaged Navier-Stokes Simulations: A Direct Numerical Simulation analysis.
*Journal of Energy Resources Technology*2015,**137**(3), 032201-1-032201-13. - Lai J, Chakraborty N. Modelling of Progress Variable Variance Transport in Head on Quenching of Turbulent Premixed Flames: A Direct Numerical Simulation Analysis.
*In: 25th International Colloquium on Dynamics of Explosions and Reactive Systems*. 2015, Leeds, UK: University of Leeds. In Press. - Chakraborty N, Wang L. Non-local vorticity statistics in premixed turbulent combustion. 2015.
- Brosh T, Patel D, Wacks D, Chakraborty N. Numerical investigation of localised forced ignition of pulverised coal particle-laden mixtures: A Direct Numerical Simulation (DNS) analysis.
*Fuel*2015,**145**, 50-62. - Yigit S, Ford J, Poole RJ, Chakraborty N. Numerical Investigation of natural convection of power-law fluids in square cross-section annular cylindrical spaces with differentially heated vertical wall: Effects of different boundary condition.
*Computational Thermal Sciences*2015,**7**(3), 261-282. - Brosh T, Marincola F, Wacks DH, Patel D, Chakraborty N. On conditions for self-sustained combustion of pulverised coal particle-laden mixtures following localised forced ignition: A Direct Numerical Simulation analysis.
*In: 25th International Colloquium on Dynamics of Explosions and Reactive Systems*. 2015, Leeds, UK: University of Leeds. In Press. - Gao Y, Chakraborty N, Swaminathan N. Scalar Dissipation Rate Transport and Its Modelling for Large Eddy Simulations of Turbulent Premixed Combustion.
*Combustion Science and Technology*2015,**187**(3), 362-383. - Wacks DH, Chakraborty N. Statistical Analysis of the Reaction Progress Variable and Mixture Fraction Gradients in Flames Propagating into Droplet Mist: A DNS Analysis.
*In: 25th International Colloquium on Dynamics of Explosions and Reactive Systems*. 2015, Leeds, UK: University of Leeds. In Press. - Sellmann J, Lai J, Kempf AM, Chakraborty N. Statistical behaviour of Flame Surface Density transport in head on quenching of turbulent premixed flames: A Direct Numerical Simulation Analysis.
*In: Clean Air 2015*. 2015, IST, Lisboa, Portugal. - Ma T, Stein O, Chakraborty N, Kempf AM. A posteriori testing of the Flame Surface Density transport equation for LES.
*Combustion Theory and Modelling*2014,**18**(1), 32-64. - Gao Y, Chakraborty N, Swaminathan N. Algebraic Closure of Scalar Dissipation Rate for Large Eddy Simulations of Turbulent Premixed Combustion.
*Combustion Science and Technology*2014,**186**(10-11), 1309-1337. - Turan O, Choupe F, Lai J, Poole RJ, Chakraborty N. Boundary condition effects on laminar natural convection of powerlaw fluids in a square enclosure heated from below with differentially heated horizontal walls.
*Industrial & Engineering Chemistry Research*2014,**53**(1), 456-473. - Wacks D, Chakraborty N. Direct Numerical Simulation of turbulent premixed flame-droplet interaction.
*In: Joint meeting of the British Scandinavian-Nordic Sections of the Combustion Institute*. 2014, Cambridge, UK. - Patel D, Chakraborty N. Effects of Energy Deposition Characteristics in Localised Forced Ignition of Turbulent Homogeneous Mixtures: A Direct Numerical Simulation (DNS) Analysis.
*In: International Conference on Heat Transfer and Fluid Flow*. 2014, Prague, Czech Republic. - Brosh T, Chakraborty N. Effects of Equivalence Ratio and Turbulent Velocity Fluctuation on Early Stages of Pulverised Coal Combustion Following Localised Ignition: A Direct Numerical Simulation Analysis.
*Energy & Fuels*2014,**28**(9), 6077-6088. - Patel D, Chakraborty N. Effects of mixture distribution on localised forced ignition of globally stoichiometric stratified mixtures: A Direct Numerical Simulation Study.
*In: SPEIC14 – Towards Sustainable Combustion Symposium*. 2014, Lisboa, Portugal. - Gao Y, Langella I, Chakraborty N, Swaminathan N. Effects of sub–grid velocity fluctuation closure on LES modelling of Scalar Dissipation Rate.
*In: Joint meeting of the British Scandinavian-Nordic Sections of the Combustion Institute*. 2014, Cambridge, UK. - Gao Y, Chakraborty N, Swaminathan N. Local Strain Rate and Curvature Dependences of Scalar Dissipation Rate Transport in Turbulent Premixed Flames: A Direct Numerical Simulation Analysis.
*Journal of Combustion*2014, 1-29. - Patel D, Chakraborty N. Localised forced ignition of globally stoichiometric stratified mixtures: A numerical investigation.
*Combustion Theory and Modelling*2014,**18**(6), 627-651. - Brosh T, Patel D, Wacks D, Chakraborty N. Localised Forced Ignition of Pulverised Coal Particle-Laden Mixtures: A Direct Numerical Simulation Analysis.
*In: International Conference on Heat Transfer and Fluid Flow*. 2014, Prague, Czech Republic. - Patel D, Chakraborty N. Localised Forced Ignition of Stratified Mixtures: A Direct Numerical Simulation (DNS) Analysis.
*In: Joint meeting of the British Scandinavian-Nordic Sections of the Combustion Institute*. 2014, Cambridge, UK. - Katragadda M, Malkeson SP, Chakraborty N. Modelling of the curvature term in the Flame surface density transport equation: a direct numerical simulations based analysis.
*International Journal of Spray and Combustion Dynamics*2014,**6**(2), 163-198. - Katragadda M, Gao Y, Chakraborty N. Modelling of the Strain Rate Contribution to the Flame Surface Density Transport for Non-Unity Lewis Number Flames in Large Eddy Simulations.
*Combustion Science and Technology*2014,**186**(10-11). - Katragadda M, Malkeson S, Chakraborty N. Modelling of the Tangential Strain Rate Term in the Flame Surface Density Transport Equation in the Context of Reynolds Averaged Navier Stokes Simulations: A Direct Numerical Simulation Analysis.
*Mathematical Problems in Engineering*2014, 927408. - Gao Y, Chakraborty N, Swaminathan N. Scalar dissipation rate transport and its modelling for Large Eddy Simulations of turbulent premixed combustion: A-priori Direct Numerical Simulation analysis.
*In: SPEIC14 – Towards Sustainable Combustion Symposium*. 2014, Lisboa, Portugal. - Gao Y, Chakraborty N, Swaminathan N. Scalar Dissipation Rate Transport in the Context of Large Eddy Simulations for Turbulent Premixed Flames with Non-Unity Lewis Number.
*Flow, Turbulence and Combustion*2014,**93**(3), 461-486. - Wacks D, Chakraborty N. Statistical analysis of premixed flame droplet interaction: A Direct Numerical Simulation investigation.
*In: International Conference on Heat Transfer and Fluid Flow*. 2014, Prague, Czech Republic. - Wacks DH, Chakraborty N. Statistical analysis of the effects of droplets on premixed flame propagation: A Direct Numerical Simulation analysis.
*In: SPEIC14 – Towards Sustainable Combustion Symposium*. 2014, Lisboa, Portugal. - Chakraborty N. Statistics of vorticity alignment with local strain rates in turbulent premixed flames.
*European Journal of Mechanics - B/Fluids*2014,**46**, 201-220. - Chakraborty N, Wang L, Klein M. Streamline segment statistics of turbulent premixed flames with nonunity Lewis numbers.
*Physical Review E*2014,**89**, 033015. - Farran R, Chakraborty N. A Direct Numerical Simulation-Based Analysis of Entropy Generation in Turbulent Premixed Flames.
*Entropy*2013,**15**(5), 1540-1566. - Gao Y, Chakraborty N, Swaminathan N. Algebraic closure of Scalar Dissipation Rate for Large Eddy Simulations of turbulent premixed combustion.
*In: 24th International Colloquium on the Dynamics of Explosions and Reactive Systems*. 2013, Taipei, Taiwan. - Ma T, Stein O, Chakraborty N, Kempf AM. A-posteriori testing of Algebraic Flame Surface Density models for LES.
*Combustion Theory and Modelling*2013,**17**(3), 431-482. - Malkeson S, Chakraborty N. A-priori Direct Numerical Simulation modelling of co-variance transport in turbulent stratified flames.
*Flow, Turbulence and Combustion*2013,**90**(2), 243-267. - Katragadda M, Chakraborty N. A-priori DNS modelling of the strain rate term of the Flame Surface Density Transport Equation in the context of LES.
*In: 6th European Combustion Meeting (ECM 2013)*. 2013, Lund University, Sweden. - Turan O, Sachdeva A, Poole RJ, Chakraborty N. Aspect ratio and boundary conditions effects on laminar natural convection of power-law fluids in a rectangular enclosure with differentially heated side walls.
*International Journal of Heat and Mass Transfer*2013,**60**, 722-738. - Chakraborty N, Lipatnikov AN. Conditional velocity statistics for high and low Damköhler number turbulent premixed combustion in the context of Reynolds Averaged Navier Stokes simulations.
*Proceedings of Combustion Institute*2013,**34**(1), 1333-1345. - Chakraborty N, Kolla H, Sankaran R, Hawkes ER, Chen JH, Swaminathan N. Determination of three-dimensional quantities related to scalar dissipation rate and its transport from two-dimensional measurements: Direct Numerical Simulation based validation.
*Proceedings of Combustion Institute*2013,**34**(1), 1151-1162. - Chakraborty N, Lipatnikov A. Effects of Lewis number on conditional fluid velocity statistics in low Damkohler number turbulent premixed combustion: A Direct Numerical Simulation analysis.
*Physics of Fluids*2013,**25**(4), 045101. - Chakraborty N, Cant RS. Effects of turbulent Reynolds number on turbulent scalar flux transport in premixed flames.
*In: 14th SIAM Numerical Combustion Conference*. 2013, San Antonio, USA. - Turan O, Lai J, Poole RJ, Chakraborty N. Laminar natural convection of power-law fluids in a square enclosure submitted from below to a uniform heat flux density.
*Journal of Non-Newtonian Fluid Mechanics*2013. In Press. - Turan O, Lai JW, Poole RJ, Chakraborty N. Laminar natural convection of power-law fluids in a square enclosure submitted from below to a uniform heat flux density.
*Journal of Non-Newtonian Fluid Mechanics*2013,**199**, 80-95. - Langella I, Swaminathan N, Chakraborty N. Large Eddy Simulation of premixed combustion using SDR approach.
*In: 8th Mediterranean Combustion Symposium*. 2013, Cesme, Izmir, Turkey. - Langella I, Chakraborty N, Swaminathan N. Large Eddy Simulation of turbulent premixed combustion.
*In: 6th European Combustion Meeting (ECM)*. 2013, Lund University, Sweden. - Katragadda M, Gao Y, Chakraborty N. Modelling of the strain rate contribution to the FSD transport for non-unity Lewis number flames in LES.
*In: 24th International Colloquium on the Dynamics of Explosions and Reactive Systems*. 2013, Taipei, Taiwan. In Press. - Chakraborty N, Swaminathan N. Reynolds Number Effects on Scalar Dissipation Rate Transport and Its Modeling in Turbulent Premixed Combustion.
*Combustion Science and Technology*2013,**185**(4), 676-709. - Dunstan T, Minamoto Y, Chakraborty N, Swaminathan N. Scalar dissipation rate modelling for Large Eddy Simulation of turbulent premixed flames.
*Proceedings of Combustion Institute*2013,**34**(1), 1193-1201. - Gao Y, Chakraborty N, Swaminathan N. Scalar dissipation rate transport in the context of LES for turbulent premixed flames with non-unity Lewis number.
*In: 8th Mediterranean Combustion Symposium*. 2013, Izmir, Turkey: Combustion Institute and the International Centre for Heat and Mass Transfer (ICHMT). In Press. - Gao Y, Chakraborty N, Swaminathan N. Scalar Dissipation Rate Transport in the Context of LES of Premixed Turbulent Flames: A DNS Analysis.
*In: 6th European Combustion Meeting (ECM)*. 2013, Lund University, Sweden. In Press. - Malkeson SP, Chakraborty N. Statistical analysis and a-priori modelling of flame surface density transport in turbulent stratified flames: A Direct Numerical Simulation study.
*Flow, Turbulence and Combustion*2013,**90**(1), 143-187. - Chakraborty N, Kolla H, Gao Y, Swaminathan N, Chen JH. Statistical behaviours of scalar dissipation rate transport equation terms for turbulent premixed flames in the context of Large Eddy Simulations.
*In: 14th SIAM Numerical Combustion conference*. 2013, San Antonio, USA. - Malkeson SP, Ruan S, Chakraborty N, Swaminathan N. Statistics of Reaction Progress Variable and Mixture Fraction Gradients from DNS of Turbulent Partially Premixed Flames.
*Combustion Science and Technology*2013,**185**(9), 1329-1359. - Markides CN, Chakraborty N. Statistics of the scalar dissipation rate using Direct Numerical Simulations and Planar Laser-Induced Fluorescence data.
*Chemical Engineering Science*2013,**90**, 221-242. - Wang L, Chakraborty N, Zhang J. Streamline segment analysis of turbulent premixed flames.
*Proceedings of the Combustion Institute*2013,**34**(1), 1401-1409. - Chakraborty N, Cant RS. Turbulent Reynolds number dependence of Flame Surface Density transport in the context of Reynolds Averaged Navier Stokes Simulations.
*Proceedings of Combustion Institute*2013,**34**(1), 1347-1356. - Lin KM, Chakraborty N, Cant RS. Unsteady effects in laminar premixed flames with transverse mixture stratification.
*In: 14th SIAM Numerical Combustion conference*. 2013, San Antonio, USA. - Ma T, Gao Y, Kempf AM, Chakraborty N. Validation and implementation of algebraic LES modelling of scalar dissipation rate for reaction rate closure in turbulent premixed combustion.
*Combustion and Flame*2013, -. - Katragadda M, Chakraborty N. A Priori Direct Numerical Simulation Modelling of the Curvature Term of the Flame Surface Density Transport Equation for Nonunity Lewis Number Flames in the Context of Large Eddy Simulations.
*International Journal of Chemical Engineering*2012, Article ID 103727. - Katragadda M, Chakraborty N, Cant RS. A-priori DNS assessment of wrinkling factor based algebraic Flame Surface Density models in the context of Large Eddy Simulations for non-unity Lewis number flames in the thin reaction zones regime.
*Journal of Combustion*2012, Article ID 794671. - Malkeson SP, Chakraborty N. A-priori DNS modelling of the turbulent scalar fluxes for low Damköhler number stratified flames.
*Combustion Science and Technology*2012,**184**(10-11), 1680-1707. - Turan O, Poole RJ, Chakraborty N. Boundary condition effects on natural convection of Bingham fluids in a square enclosure with differentially heated horizontal walls.
*Computational Thermal Sciences*2012,**4**(1), 77-97. - Turan O, Poole RJ, Chakraborty N. Boundary condition effects on natural convection of Bingham fluids in a square enclosure with differentially heated horizontal walls.
*In: Advances in Computational Heat Transfer*. 2012, Bath, UK. - Hesse H, Malkeson SP, Chakraborty N. Displacement Speed Statistics for Stratified Mixture Combustion in an Igniting Turbulent Planar Jet.
*Journal of Engineering for Gas Turbines and Power*2012,**134**(5), 051502. - Gao Y, Chakraborty N. Effects of curvature and tangential strain rate on scalar dissipation rate transport of turbulent premixed flames in the thin reaction zone regime.
*In: 34th International Combustion Symposium*. 2012, Warsaw, Poland. - Katragadda M, Chakraborty N. Effects of Lewis number on the curvature term of the Flame Surface Density transport equation for LES.
*In: 7th International Symposium on Turbulence, Heat and Mass Transfer*. 2012, Palermo, Sicily, Italy. - Katragadda M, Chakraborty N, Cant RS. Effects of Turbulent Reynolds Number on the Performance of Algebraic Flame Surface Density Models for Large Eddy Simulation in the Thin Reaction Zones Regime: A Direct Numerical Simulation Analysis.
*Journal of Combustion*2012, Article ID 353257. - Turan O, Poole RJ, Chakraborty N. Influences of boundary conditions on laminar natural convection in rectangular enclosures with differentially heated side walls.
*International Journal of Heat and Fluid Flow*2012,**33**(1), 131-146. - Turan O, Sachdeva A, Poole RJ, Chakraborty N. Laminar Natural Convection of Power-Law Fluids in a Square Enclosure With Differentially Heated Sidewalls Subjected to Constant Wall Heat Flux.
*Journal of Heat Transfer*2012,**134**(12), 122504. - Turan O, Chakraborty N, Poole RJ. Laminar Rayleigh-Bénard convection of yield stress fluids in a square enclosure.
*Journal of Non-Newtonian Fluid Mechanics*2012,**171-172**, 83-96. - Katragadda M, Chakraborty N. Modelling of the curvature term of the Flame Surface Density transport equation for Large Eddy Simulations.
*Journal of Combustion*2012, Article ID 915482. - Katragadda M, Chakraborty N. Modelling of the curvature term of the Flame Surface Density Transport Equation for Large Eddy Simulations.
*In: 34th International Combustion Symposium*. 2012, Warsaw University of Technology, Warsaw, Poland. - Katragadda M, Malkeson SP, Chakraborty N. Modelling of the curvature term of the Flame Surface Density Transport Equation in the context of Reynolds Averaged Navier Stokes Simulation.
*In: 34th International Combustion Symposium*. 2012, Warsaw, Poland. - Chakraborty N. Non-unity Lewis number effects on turbulent premixed combustion closure: A Direct Numerical Simulation analysis.
*In: JSME-CMD International Computational Mechanics Symposium*. 2012, Kobe, Japan. - Chakraborty N, Hudson M, Cant RS. Statistical behaviour of dissipation rate of turbulent kinetic energy in turbulent premixed flames.
*In: 7th International Symposium on Turbulence, Heat and Mass Transfer*. 2012, Palermo, Sicily, Italy. - Katragadda M, Malkeson SP, Chakraborty N. Statistical behaviour of the curvature term of the FSD transport equation in the context of RANS.
*In: 7th International Symposium on Turbulence, Heat and Mass Transfer*. 2012, Palermo, Sicily, Italy. - Malkeson SP, Chakraborty N. Alignment statistics of active and passive scalar gradients in turbulent stratified flames.
*Physical Review E*2011,**83**(4), 046308. - Malkeson SP, Chakraborty N. A-priori Direct Numerical Simulation analysis of Flame Surface Density transport for turbulent stratified flames in the context of Reynolds Averaged Navier Stokes simulations.
*In: 5th European Combustion Meeting*. 2011, Cardiff, UK. - Malkeson SP, Chakraborty N. A-priori DNS modelling of co-variance transport in turbulent stratified flames.
*In: 7th Mediterranean Combustion Symposium*. 2011, Chia Laguna, Cagliari, Sardinia, Italy. - Turan O, Poole RJ, Chakraborty N. Aspect ratio effects in laminar natural convection of Bingham fluids in rectangular enclosures with differentially heated side walls.
*Journal of non-Newtonian Fluid Mechanics*2011,**167**(3-4), 208-230. - Chakraborty N, Hartung G, Katragadda M, Kaminski CF. Comparison of 2D and 3D density-weighted displacement speed statistics and implications for laser based measurements of flame displacement speed using direct numerical simulation data.
*Combustion and Flame*2011,**158**(7), 1372-1390. - Chakraborty N, Hawkes ER. Determination of 3D Flame Surface Density variables from 2D measurements: Validation using Direct Numerical Simulation.
*Physics of Fluids*2011,**23**, 065113. - Katragadda M, Chakraborty N. Effects of Lewis number on Flame Surface Density transport in the context of Large Eddy Simulation.
*In: 5th European Combustion Meeting*. 2011, Cardiff, UK. - Chakraborty N, Cant RS. Effects of Lewis number on Flame Surface Density transport in turbulent premixed combustion.
*Combustion and Flame*2011,**158**(9), 1768-1787. - Chakraborty N, Swaminathan N. Effects of Lewis number on scalar variance transport in turbulent premixed flames.
*Flow, Turbulence and Combustion*2011,**87**(2-3), 261-292. - Chakraborty N, Klein M, Cant RS. Effects of Turbulent Reynolds number on the displacement speed statistics in the Thin Reaction Zones regime turbulent premixed combustion.
*Journal of Combustion*2011, 473679. - Turan O, Sachdeva A, Poole RJ, Chakraborty N. Laminar natural convection of Bingham fluids in a square enclosure with vertical walls subjected to constant heat flux.
*Numerical Heat Transfer A*2011,**60**(5), 381-409. - Katragadda M, Malkeson SP, Chakraborty N. Modelling of the curvature term of the Flame Surface Density transport equation for Reynolds Averaged Navier Stokes simulations.
*In: 7th Mediterranean Combustion Symposium*. 2011, Chia Laguna, Cagliari, Sardinia, Italy: International Centre for Heat and Mass Transfer. - Katragadda M, Malkeson SP, Chakraborty N. Modelling of the tangential strain rate term of the Flame Surface Density transport equation in the context of Reynolds Averaged Navier-Stokes Simulation.
*Proceedings of the Combustion Institute*2011,**33**(1), 1429-1437. - Turan O, Sachdeva A, Chakraborty N, Poole RJ. Natural convection of power law fluids in enclosures.
*In: 7th Annual European Rheology Conference (AERC 2011)*. 2011, Suzdel, Russia: The European Society of Rheology. - Mehta M, Malkeson SP, Chakraborty N. Numerical investigation of localised forced ignition of quiescent globally stoichiometric stratified mixtures.
*In: 7th Mediterranean Combustion Symposium*. 2011, Chia Laguna, Cagliari, Sardinia, Italy: International Centre for Heat and Mass Transfer. - Chakraborty N. Physics and modelling of turbulent transport.
*In:*Chakraborty, S., Mitra, S, ed.*Microfluidics and Nanofluidics Handbook: Fabrication, Implementation, and Applications*. Boca Raton, Florida, USA: CRC Press, 2011, pp.749-833. - Chakraborty N, Champion M, Mura A, Swaminathan N. Scalar dissipation rate approach to reaction rate closure.
*In:*Swaminathan, N., Bray, K.N.C, ed.*Turbulent Premixed Flames*. Cambridge, UK: Cambridge University Press, 2011, pp.74-102. - Malkeson SP, Chakraborty N. Statistical analysis and modelling of turbulent fuel mass fraction flux in turbulent stratified flames using Direct Numerical Simulations.
*In: 23rd International Colloquium of Dynamics of Explosions and Reactive Systems*. 2011, University of California, Irvine, USA. - Malkeson SP, Chakraborty N. Statistical analysis of cross scalar dissipation rate transport in turbulent partially premixed flames: A Direct Numerical Simulation study.
*Flow Turbulence and Combustion*2011,**87**(2-3), 313-349. - Malkeson SP, Chakraborty N. Statistical analysis of scalar dissipation rate transport in turbulent partially premixed flames: A Direct Numerical Simulation study.
*Flow, Turbulence and Combustion*2011,**86**(1), 1-44. - Chakraborty N, Katragadda M, Cant RS. Statistics and modelling of turbulent kinetic energy transport in different regimes of premixed combustion.
*Flow, Turbulence and Combustion*2011,**87**(2-3), 205-235. - Chakraborty N, Lipatnikov A. Statistics of Conditional Fluid Velocity in the Corrugated Flamelets Regime of Turbulent Premixed Combustion: A Direct Numerical Simulation Study.
*Journal of Combustion*2011, Article ID 628208. - Malkeson SP, Chakraborty N. Statistics of cross-scalar dissipation rate based on reaction progress variable and mixture fraction for turbulent stratified flames: A DNS study.
*In: 13th SIAM Numerical Combustion Conference*. 2011, Corfu, Greece. - Malkeson SP, Chakraborty N. A-priori Direct Numerical Simulation analysis of algebraic models of variances and scalar dissipation rates for Reynolds Averaged Navier Stokes Simulations for low Damköhler number turbulent partially-premixed combustion.
*Combustion Science and Technology*2010,**182**(8), 960-999. - Katragadda M, Chakraborty N. A-priori DNS assessment of algebraic LES Flame Surface Density models for non-unity Lewis number flames in the thin reaction zones regime.
*In: 33rd International Combustion Symposium*. 2010, Bejing, China. - Ma T, Stein O, Chakraborty N, Kempf A. Comparison of FSD models for LES.
*In: 33rd International Combustion Symposium*. 2010, Tsingua University, Beijing, China. - Skouras A, Chakraborty N, Chakraborty S. Computational analysis of the effects of process parameters on molten pool transport in Copper-Nickel dissimilar laser weld pool.
*Numerical Heat Transfer A*2010,**58**(4), 272-294. - Chakraborty N, Swaminathan N. Effects of Lewis number on scalar dissipation transport and its modelling implications for turbulent premixed combustion.
*Combustion Science and Technology*2010,**182**(9), 1201-1240. - Chakraborty N, Hesse H, Mastorakos E. Effects on fuel Lewis number on localised forced ignition of turbulent mixing layers.
*Flow, Turbulence and Combustion*2010,**84**(1), 125-164. - Turan O, Poole R, Chakraborty N. Laminar natural convection of Bingham fluids in a rectangular cavity with differently heated side walls: A numerical study.
*In: 7th International Conference on Heat Transfer, Fluid Mechanics and Thermodynamics*. 2010, Antalya, Turkey. - Turan O, Chakraborty N, Poole R. Laminar natural convection of Bingham fluids in a square enclosure with differentially heated side walls.
*Journal of Non-Newtonian Fluid Mechanics*2010,**165**(15-16), 901-913. - Malkeson SP, Chakraborty N. Modelling of fuel mass fraction variance transport in turbulent stratified flames: A Direct Numerical Simulation study.
*Numerical Heat Transfer A*2010,**58**(3), 187-206. - Turan O, Poole R, Chakraborty N. Natural convection of yield stress fluids in enclosures.
*In: 6th Annual European Rheology Conference*. 2010, Goteborg, Sweden. - Chakraborty N, Hesse H, Mastorakos E. Numerical investigation of edge flame propagation behaviour in an igniting turbulent planar jet.
*Combustion Science and Technology*2010,**182**(11), 1747-1781. - Malkeson SP, Chakraborty N. Statistical analysis of co-variance transport in low Damköhler number number turbulent stratified flames: a DNS study.
*In: 33rd International Combustion Symposium*. 2010, Bejing, China. - Malkeson SP, Chakraborty N. Statistical analysis of displacement speed in turbulent stratified flames: A Direct Numerical Simulation study.
*Combustion Science and Technology*2010,**182**(11), 1841-1883. - Malkeson SP, Chakraborty N. Statistical analysis of fuel mass fraction variance transport in turbulent partially-premixed flames: A Direct Numerical Simulation study.
*In: 33rd International Combustion Symposium*. 2010, Bejing, China. - Chakraborty N, Rogerson J, Swaminathan N. The scalar gradient alignment statistics of flame kernels and its modelling implications for turbulent premixed combustion.
*Flow, Turbulence and Combustion*2010,**85**(1), 25-55. - Chakraborty N, Cant RS. Direct Numerical Simulation analysis of the Flame Surface Density transport equation in the context of Large Eddy Simulation.
*Proceedings of the Combustion Institute*2009,**32**(1), 1445-1453. - Wandel A, Chakraborty N, Mastorakos E. Direct Numerical Simulations of turbulent flame expansion in fine sprays.
*Proceedings of the Combustion Institute*2009,**32**(2), 2283-2290. - Chakraborty N, Klein M. Effects of global flame curvature on the Surface Density Function transport in Turbulent premixed flame kernels in the Thin Reaction Zones regime.
*Proceedings of Combustion Institute*2009,**32**(1), 1435-1443. - Chakraborty N, Klein M, Swaminathan N. Effects of Lewis number on the reactive scalar gradient alignment with local strain rate in turbulent premixed flames.
*Proceedings of the Combustion Institute*2009,**32**(1), 1409-1417. - Chakraborty N, Cant RS. Effects of Lewis number on turbulent scalar transport and its modelling in turbulent premixed flames.
*Combustion and Flame*2009,**156**(7), 1427-1444. - Chakraborty N, Swaminathan N. Modelling of non-unity Lewis number effects on scalar dissipation rate transport in turbulent premixed flames.
*In: 4th European Combustion Meeting (ECM2009)*. 2009, Vienna, Austria: The Combustion Institute. - Chakraborty N, Hesse H, Mastorakos E. Numerical investigation of edge flame propagation behaviour in an igniting turbulent planar jet.
*In: 22nd International Colloquium on the Dynamics of Explosion and Reactive Systems, 2009 (ICDERS09)*. 2009, Minsk, Belarus. - Chakraborty N, Cant RS. Physical insight and modelling for Lewis number effects on turbulent heat and mass transport in turbulent premixed flames.
*Numerical Heat Transfer Part A: Applications*2009,**55**(8), 762-779. - Kolla H, Rogerson J, Chakraborty N, Swaminathan N. Scalar Dissipation Rate Modeling and its Validation.
*Combustion Science and Technology*2009,**181**(3), 518-535. - Malkeson SP, Chakraborty N. Scalar Dissipation rate transport modelling of partially premixed flames using Direct Numerical Simulations (DNS).
*In: 4th European Combustion Meeting (ECM2009)*. 2009, Vienna, Austria. - Chakraborty N, Malkeson SP. Statistical analysis of displacement speed in partially premixed flames using DNS.
*In: 22nd International Colloquium on the Dynamics of Explosion and Reactive Systems, 2009 (ICDERS09)*. 2009, Minsk, Belarus. - Hesse H, Chakraborty N, Mastorakos E. The effects of Lewis number of the fuel on Displacement Speed of Edge Flames in Igniting Turbulent Mixing Layers.
*Proceedings of Combustion Institute*2009,**32**(1), 1399-1407. - Chakraborty N. The effects of turbulence on molten pool transport during melting and solidification processes in continuous laser welding of copper-nickel dissimilar couple.
*Applied Thermal Engineering*2009,**29**(17-18), 3618-3631. - Chakraborty N, Rogerson JW, Swaminathan N.
*A priori*assessment of closures for scalar dissipation rate transport in turbulent premixed flames using direct numerical simulation.*Physics of Fluids*2008,**20**(4), 045106. - Chakraborty N, Klein M.
*A priori*direct numerical simulation assessment of algebraic flame surface density models for turbulent premixed flames in the context of large eddy simulation.*Physics of Fluids*2008,**20**(8), 085108. - Kolla H, Rogerson JW, Chakraborty N, Swaminathan N. An algebraic model for scalar dissipation rate in Turbulent Premixed Flames.
*In: 12th SIAM Numerical Combustion Conference (NC08)*. 2008, Monterey, USA: SIAM. - Malkeson SP, Chakraborty N. Analysis of Scalar Dissipation rate transport in combusting stratified charge mixtures using Direct Numerical Simulations.
*In: 32nd International Symposium on Combustion*. 2008, Montreal, Canada. - Chakraborty N, Mastorakos E. Direct Numerical Simulation of localised forced ignition of turbulent mixing layers: the effects of mixture fraction and its gradient.
*Flow, Turbulence and Combustion*2008,**80**(2), 155-186. - Chakraborty N, Cant RS. Effects of Lewis number on the scalar flux in turbulent premixed flames.
*In: 12th SIAM Numerical Combustion Conference (NC08)*. 2008, Monterey, USA: SIAM. - Chakraborty N, Chakraborty S. Effects of Prandtl Number in molten pool transport and thermal transport regimes in surface melting processes.
*In: 8th ASME-ISHMT Conference*. 2008, Hyderabad, India. - Chakraborty N, Hawkes ER, Chen JH, Cant RS. Effects of strain rate and curvature on Surface Density Function transport in turbulent premixed CH
_{4}-air and H_{2}-air flames: A comparative study.*Combustion and Flame*2008,**154**(1-2), 259-280. - Klein M, Chakraborty N, Cant RS. Effects of turbulence on self-sustained combustion in premixed flame kernels: A Direct Numerical Simulation (DNS) study.
*Flow, Turbulence and Combustion*2008,**81**(4), 583-607. - Chakraborty N, Klein M. Influence of Lewis number on the Surface Density Function transport in the thin reaction zones regime for turbulent premixed flames.
*Physics of Fluids*2008,**20**(6), 065102. - Chakraborty N, Klein M. The effects of initial kernel radius on the Surface Density transport in turbulent flame kernels.
*In: 12th SIAM Numerical Combustion Conference (NC08)*. 2008, Monterey, USA: SIAM. - Chakraborty N. Thermal transport regimes and effects of Prandtl number in molten pool transport in laser surface melting processes.
*Numerical Heat Transfer A*2008,**53**(3), 273-294. - Chakraborty N, Cant RS.
*A priori*analysis of the curvature and propagation terms of the flame surface density transport equation for large eddy simulation.*Physics of Fluids*2007,**19**, 105101. - Chakraborty N, Klein M.
*A-priori*Direct Numerical Simulation (DNS) analysis of algebraic Flame Surface Density models for turbulent premixed flames in the context of Large Eddy Simulation (LES).*In: 3rd European Combustion Meeting (ECM2007)*. 2007, Chania, Greece. - Richardson E, Chakraborty N, Mastorakos E. Analysis of direct numerical simulations of ignition fronts in turbulent non-premixed flames in the context of conditional moment closure.
*Proceedings of Combustion Institute*2007,**31**(1), 1683-1690. - Chakraborty N. Comparison of displacement speed statistics of turbulent premixed flames in the regimes representing combustion in Corrugated Flamelets and the Thin Reaction Zones.
*Physics of Fluids*2007,**19**, 105109. - Chakraborty N, Cant RS, Mastorakos E. Effects of turbulence on spark ignition in inhomogeneous mixtures: A Direct Numerical Simulation (DNS) study.
*Combustion Science and Technology*2007,**179**(1-2), 293-317. - Chakraborty N, Swaminathan N. Influence of Damköhler number on turbulence-scalar interaction in premixed flames, Part I: Physical Insight.
*Physics of Fluids*2007,**19**, 045103. - Chakraborty N, Swaminathan N. Influence of Damköhler number on turbulence-scalar interaction in premixed flames, Part II: Model Development.
*Physics of Fluids*2007,**19**, 045104. - Hult J, Gashi S, Chakraborty N, Klein M, Jenkins KW, Cant RS, Kaminski CF. Measurement of Flame Surface Density for turbulent premixed flames using PLIF and DNS.
*Proceedings of Combustion Institute*2007,**31**(1), 1319-1326. - Chakraborty N, Chakraborty S. Modelling of turbulent molten pool convection in laser welding of a copper–nickel dissimilar couple.
*International Journal of Heat and Mass Transfer*2007,**50**(9-10), 1805-1822. - Chakraborty N, Swaminathan N. Scalar dissipation rate transport in the corrugated flamelets and thin reaction zones regimes for turbulent premixed flames.
*In: 3rd European Combustion Meeting (ECM)*. 2007, Chania, Greece. - Chakraborty N, Mastorakos E. Scalar dissipation rate transport in the corrugated flamelets and thin reaction zones regimes for turbulent premixed flames.
*In: 3rd European Combustion Meeting (ECM)*. 2007, Chania, Greece. - Chakraborty N, Klein M, Cant RS. Stretch rate effects on displacement speed in turbulent premixed flame kernels in the thin reaction zones regime.
*Proceedings of the Combustion Institute*2007,**31**(1), 1385-1392. - Chakraborty N, Mastorakos E. The effects of mixture fraction and its gradient on the localised ignition of turbulent mixing layer.
*In: 21st International Colloquium on the Dynamics of Explosion and Reactive Systems (ICDERS)*. 2007, Poiters, France. - Chakraborty N, Chakraborty S. Thermal transport regimes and generalized regime diagrams for high energy surface melting processes.
*Metallurgical Transactions B*2007,**38**(1), 143-147. - Wandel A, Chakraborty N, Mastorakos E. Direct Numerical Simulation (DNS) of droplets with spark ignition.
*In: 31st International Combustion Symposium*. 2006, Heidelberg, Germany. - Chakraborty N, Chakraborty S. Distinct influences of turbulence in momentum, heat and mass transfers during melt pool convection in a typical laser surface alloying process.
*European Physical Journal, Applied Physics*2006,**36**(1), 71-89. - Chatterjee D, Chakraborty N, Cant RS. Effect of process parameters in transport phenomena in laser surface alloying process.
*Journal of Laser Applications*2006,**18**(2), 138-150. - Klein M, Chakraborty N, Jenkins KW, Cant RS. Effects of initial radius on the propagation of spherical premixed flame kernels in turbulent environment.
*Physics of Fluids*2006,**18**, 055102. - Jenkins KW, Klein M, Chakraborty N, Cant RS. Effects of strain rate and curvature on the propagation of a spherical flame kernel in the thin reaction zones regime.
*Combustion and Flame*2006,**145**(1-2), 415-434. - Klein M, Chakraborty N, Cant RS. Effects of turbulence on self-sustained combustion in premixed flame kernels: A Direct Numerical Simulation (DNS) study.
*In: 11th SIAM Numer. Combust. Conference*. 2006, Granada, Spain. - Chakraborty N, Swaminathan N. Influence of Damköhler Number on scalar dissipation rate modelling in turbulent premixed flames.
*In: 11th SIAM Numerical Combustion Conference*. 2006, Granada, Spain. - Chakraborty N, Cant RS. Influence of Lewis Number on strain rate effects in turbulent premixed flame propagation in the thin reaction zones regime.
*International Journal of Heat and Mass Transfer*2006,**49**(13-14), 2158-2172. - Richardson E, Chakraborty N, Mastorakos E. Modelling of conditional turbulent flux terms in igniting turbulent non-premixed flames in the context of Conditional Moment Closure.
*In: 11th SIAM Numerical Combustion Conference*. 2006, Granada, Spain. - Chakraborty N, Cant RS. Modelling of the curvature and propagation terms of the Flame Surface Density (FSD) transport equation in the context of Large Eddy Simulation (LES).
*In: 11th SIAM Numerical Combustion Conference*. 2006, Granada, Spain. - Chakraborty N, Mastorakos E. Numerical Investigation of edge flame propagation characteristics in turbulent mixing layers.
*Physics of Fluids*2006,**18**, 105103. - Chakraborty N, Cant RS. Statistical behaviour and modelling of flame normal vector in turbulent premixed flames.
*Numerical Heat Transfer, Part A: Applications: An International Journal of Computation and Methodology*2006,**50**(7), 623-643. - Chakraborty N, Markides C, Mastorakos E. Statistics of the conditional scalar dissipation from DNS and experiments.
*In: 9th Turbulent Non-premixed Flame Workshop*. 2006, Heidelberg, Germany. - Chakraborty S, Chakraborty N, Chatterjee D, Sarkar S. Turbulence modelling strategies in molten pool convection in laser-aided surface processing of materials.
*In: 6th Biennial Workshop on Application of Laser in Mechanical Industries (WALMI)*. 2006, Jadavpur University, Kolkata, India. - Chakraborty N.
*[PhD thesis] Fundamental study of turbulent premixed combustion using Direct Numerical Simulation (DNS).*Cambridge, UK: University of Cambridge, 2005. - Chakraborty N, Cant RS.
*A Priori*Direct Numerical Simulation (DNS) analysis of the transport equation for Flame Surface Density (FSD) in the context of Large Eddy Simulation.*In: 2nd European Combustion Meeting (ECM)*. 2005, Louvain-la-Neuve, Belgium. - Gashi S, Hult J, Jenkins KW, Chakraborty N, Cant RS, Kaminski CF. Curvature and wrinkling of premixed flame kernels-Comparisons of OH PLIF and DNS data.
*Proceedings of Combustion Institute*2005,**30**(1), 809-817. - Chakraborty N, Jenkins KW, Klein M, Cant RS. Effects of strain rate and curvature on flame displacement speed in a spherical kernel in the thin reaction zones regime.
*In: 2nd European Combustion Meeting (ECM)*. 2005, Louvain-la-Neuve, Belgium. - Chakraborty N, Cant RS. Effects of strain rate and curvature on Surface Density Function transport in turbulent premixed flames in the thin reaction zones regime.
*Physics of Fluids*2005,**17**(6), 065108. - Chakraborty N, Mastorakos E, Cant RS. Effects of turbulence on spark ignition in inhomogeneous mixtures: A Direct Numerical Simulation (DNS) study.
*In: Proceedings of 4th Mediterranean Combustion Symposium*. 2005, Lisbon, Portugal. - Chakraborty N, Cant RS. Influence of Lewis Number on curvature effects in turbulent premixed flame propagation in the thin reaction zones regime.
*Physics of Fluids*2005,**17**(10), 105105. - Chakraborty N, Chakraborty S. Influences of positive and negative surface tension coefficients on laminar and turbulent weld pool convection in a Gas Tungsten Arc Welding (GTAW) Process: A comparative study.
*Proceedings of ASME, Journal of Heat Transfer*2005,**127**(8), 848-862. - Hawkes ER, Chen JH, Chakraborty N.
*A priori*investigation for flame wrinkling in large eddy simulation.*In: 10th International Conference on Numerical Combustion*. 2004, Arizona, Sedona, USA: Society for Industrial and Applied Mathematics (SIAM). - Chakraborty N, Chatterjee D, Chakraborty S. A scaling analysis of turbulent transport in laser surface alloying process.
*Journal of Applied Physics*2004,**96**(8), 4569-4577. - Chakraborty N, Chakraborty S. Modelling of turbulent transport in laser surface alloying.
*Numerical Heat Transfer, Part A: Applications: An International Journal of Computation and Methodology*2004,**46**(10), 1009-1032. - Chakraborty N, Cant RS. Mutual interaction of flame normal components in turbulent premixed flames.
*In: 10th International Conference on Numerical Combustion*. 2004, Arizona, Sedona, USA: Society for Industrial and Applied Mathematics (SIAM). - Chakraborty N, Chakraborty S, Dutta P. Three dimensional modelling of turbulent weld pool convection in GTAW process.
*Numerical Heat Transfer, Part A: Applications: An International Journal of Computation and Methodology*2004,**45**(4), 391-413. - Jenkins KW, Chakraborty N, Cant RS. Turbulent premixed flame propagation: A comparison of spherical kernels and planar flames.
*In: 10th International Conference on Numerical Combustion*. 2004, Arizona, Sedona, USA: Society for Industrial and Applied Mathematics (SIAM). - Chakraborty N, Cant RS. Unsteady effects of strain rate and curvature on turbulent premixed flames in an inlet-outlet configuration.
*Combustion and Flame*2004,**137**(1-2), 129-147. - Chakraborty N, Chakraborty S, Dutta P. Modelling of turbulent transport in arc welding pools.
*International Journal of Numerical Methods for Heat and Fluid Flow*2003,**13**(1), 7-30. - Chakraborty N, Chatterjee D, Chakraborty S. Modelling of turbulent transport in laser surface alloying.
*In: ASME 2003 International Mechanical Engineering Congress and Exposition (IMECE2003)*. 2003, Washington DC, USA: ASME. - Chakraborty S, Chakraborty N, Kumar P, Dutta P. Studies on turbulent momentum, heat and species transport in binary alloy solidification in a top cooled rectangular cavity.
*International Journal of Heat and Mass Transfer*2003,**46**(7), 1115-11377. - Chakraborty N, Cant RS. Tangential strain rate and curvature effects on the displacement speed of an unsteady turbulent premixed flame in a quasi-stationary configuration.
*In: 1st European Combustion Meeting (ECM2003)*. 2003, Orleans, France. - Chakraborty N, Chakraborty S. A generalized object-oriented computational method for simulation of power and process cycles.
*Proceedings of the Institution of Mechanical Engineers, Part A: Journal of Power and Energy*2002,**216**(2), 155-159. - Chakraborty N, Chakraborty S, Dutta P. Effect of process parameters on turbulent convection on arc welding pools.
*In: 5th ISHMT ASME Joint Heat and Mass Transfer Conference*. 2002, Kolkata, India. - Chakraborty N.
*A k-epsilon model for turbulent convection in Gas Tungsten Arc Weld pools [ME Thesis].*Bangalore, India: Indian Institute of Science, 2001.