School of Engineering

Staff Profile

Dr Andrew Aspden

Lecturer in Thermofluid Dynamics

Background

Andy joined Newcastle University in January 2017 as a Lecturer of Thermofluid Dynamics.  He obtained an MMath from the University of Oxford in 2002, followed by a PhD in Applied Mathematics from the University of Cambridge in 2006. He was awarded a Glenn T Seaborg Fellowship at the Lawrence Berkeley National Laboratory, where he was a member of the Center for Computational Sciences and Engineering for five years. Before joining Newcastle University, he was a Lecturer of Applied Mathematics at the University of Southampton, a Lecturer of Computational Fluid Dynamics at Cranfield University, and before that a Lecturer of Engineering Sciences at the University of Portsmouth.

Andy's research involves mathematical analysis and high-fidelity three-dimensional numerical simulation to study the fundamentals of turbulence and combustion to enable the development and validation of engineering models that can be used to design efficient low-emission combustor technology for transport and power generation.

Areas of expertise

  • Thermofluid dynamics
  • Turbulence
  • Combustion
  • Computational Fluid Dynamics (CFD)
  • Direct Numerical Simulation (DNS)
  • Implicit Large Eddy Simulation (ILES)
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Research

Andy's research interests include analysis and simulation of fluid mechanics, turbulence, combustion, and type Ia supernovae.

Direct Numerical Simulation of Turbulent Combustion

Combustion research focusses on the use of Direct Numerical Simulation of turbulent combustion for development and validation of turbulent flame models.

Transition to the Distributed Burning Regime

When turbulent premixed flames are exposed to sufficiently high levels of turbulence, a transition to distributed burning can be observed. 

Implicit Large Eddy Simulation

Implicit Large Eddy Simulation (ILES) exploits properties of non-oscillatory finite-volume numerical schemes to simulate turbulent flows without explicitly modelling small-scale dissipation of kinetic energy.

Monotone Integrated Large Eddy Simulations of Buoyant Turbulent Jets with Off-Source Heating

Andy's PhD thesis considered a laboratory analogue of the modified entrainment behaviour observed in cumulus clouds.

Publications

  • Dasgupta D, Sun W, Day MS, Aspden AJ, Lieuwen T. Analysis of chemical pathways and flame structure for n-dodecane/air turbulent premixed flames. Combustion and Flame 2019, 207, 36-50.
  • Aspden AJ, Day MS, Bell JB. Towards the distributed burning regime in turbulent premixed flames. Journal of Fluid Mechanics 2019, 871, 1-21.
  • Aspden AJ, Zettervall N, Fureby C. An a priori analysis of a DNS database of turbulent lean premixed methane flames for LES with finite-rate chemistry. Proceedings of the Combustion Institute 2019, 37(2), 2301-2609.
  • Shin D-H, Aspden AJ, Richardson E. Self-similar Properties of Decelerating Turbulent Jets. Journal of Fluid Mechanics 2017, 833.
  • Aspden AJ, Nikiforakis N, Bell JB, Dalziel SB. Turbulent jets with off-source heating. Journal of Fluid Mechanics 2017, 824, 766-784.
  • Aspden AJ. A numerical study of diffusive effects in turbulent lean premixed hydrogen flames. Proceedings of the Combustion Institute 2017, 36(2), 1997-2004.
  • Aspden AJ, Bell JB, Day MS, Egolfopoulos FN. Turbulence-flame interactions in lean premixed dodecane flames. Proceedings of the Combustion Institute 2017, 36(2), 2005-2016.
  • Aspden AJ, Day MS, Bell JB. Three-dimensional direct numerical simulation of turbulent lean premixed methane combustion with detailed kinetics. Combustion and Flame 2016, 166, 266-283.
  • Aspden AJ, Day MS, Bell JB. Turbulence-chemistry interaction in lean premixed hydrogen combustion. Proceedings of the Combustion Institute 2015, 35(2), 1321-1329.
  • Schmidt W, Almgren AS, Braun H, Engels JF, Niemeyer JC, Schultz J, Mekuria RR, Aspden AJ, Bell JB. Cosmological Fluid Mechanics with Adaptively Refined Large Eddy Simulations. Monthly Notices of the Royal Astronomical Society 2014, 440(4), 3051-3077.
  • Chatakonda O, Hawkes ER, Aspden AJ, Kerstein AR, Kolla H, Chen JH. On the fractal characteristics of low Damköhler number flames. Combustion and Flame 2013, 160(11), 2422-2433.
  • Almgren AS, Aspden AJ, Bell JB, Minion M. On the Use of Higher-Order Projection Methods for Incompressible Turbulent Flow. SIAM Journal on Scientific Computing 2013, 35(1), B25-B42.
  • Kuhl AL, Bell AJ, Beckner VE, Balakrishnan K, Aspden AJ. Spherical combustion clouds in explosions. Shock Waves 2013, 23(3), 233–249.
  • Nonaka AJ, Aspden AJ, Zingale M, Almgren AS, Bell JB, Woosley SE. High-Resolution Simulations of Convection Preceding Ignition in Type Ia Supernovae Using Adaptive Mesh Refinement. Astrophysical Journal 2012, 745, 73-94.
  • Aspden AJ, Day MS, Bell JB. Turbulence-Flame Interactions in Lean Premixed Hydrogen: transition to the distributed burning regime. Journal of Fluid Mechanics 2011, 680, 287-320.
  • Aspden AJ, Day MS, Bell JB. Characterization of Low Lewis Number Flames. Proceedings of the Combustion Institute 2011, 33, 1463-1471.
  • Aspden AJ, Day MS, Bell JB. Lewis Number Effects in Distributed Flames. Proceedings of the Combustion Institute 2011, 33(1), 1473-1480.
  • Aspden AJ, Bell JB, Dong S, Woosley SE. Burning Thermals in Type Ia Supernovae. Astrophysical Journal 2011, 738, 94-107.
  • Aspden AJ, Bell JB, Woosley SB. Turbulent Oxygen Flames in Type Ia Supernovae. Astrophysical Journal 2011, 730, 144-151.
  • Woosley SE, Kerstein AR, Aspden AJ. Flames in Type Ia Supernova: Deflagration-Detonation Transition in the Oxygen Burning Flame. Astrophysical Journal 2011, 734, 37-41.
  • Aspden AJ, Bell JB, Woosley SE. Distributed Flames in Type Ia Supernovae. Astrophysical Journal 2010, 710(2).
  • Scase MM, Aspden AJ, Caulfield CP. The effect of sudden source buoyancy flux increases on turbulent plumes". Journal of Fluid Mechanics 2009, 635, 137-169.
  • Woosley SE, Kerstein AR, Sankaran V, Aspden AJ, Röpke F. Type Ia Supernovae: Calculations of Turbulent Flames Using the Linear Eddy Model. Astrophysical Journal 2009, 704, 255-273.
  • Aspden AJ, Nikiforakis N, Dalziel SB, Bell JB. Analysis of Implicit LES Methods. Communications in Applied Mathematics and Computational Science 2009, 3, 103-126.
  • Aspden AJ, Bell JB, Day MS, Woosley SE, Zingale M. Turbulence-Flame Interactions in Type Ia Supernovae. Astrophysical Journal 2008, 689(2), 1173-1185.
  • Davidson PA, Sreenivasan B, Aspden AJ. Evolution of localised blobs of swirling or buoyant fluid with and without an ambient magnetic field. Physical Review E 2007, 75.