DNS of Turbulent Combustion in Complex Flows
Direct numerical simulation methodology and computing power have progressed to the point where it is feasible to perform DNS in mildly complex geometries representative of flow configurations encountered in practical combustors. These complex flows encompass effects of mean shear, flow recirculation, and wall boundary layers together with turbulent fluctuations which affect entrainment, mixing and combustion. Examples of recent DNS studies with complex flows relevant to gas turbine and internal combustion engines will be presented.
Jacqueline H. Chen is a Distinguished Member of Technical Staff at the Combustion Research Facility at Sandia National Laboratories. She has contributed broadly to research in direct numerical simulations of turbulent combustion elucidating turbulence-chemistry interactions in turbulent flames and ignition processes. She is a member of the US National Academy of Engineering and a Fellow of the Combustion Institute and the American Physical Society.