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Center for Turbulence Research Annual Research Briefs 2003

Summary: Center for Turbulence Research
Annual Research Briefs 2003
Unstructured LES of reacting multiphase flows in
realistic gas turbine combustors
By Frank Ham, Sourabh Apte, Gianluca Iaccarino, Xiaohua Wu, Marcus
Herrmann, George Constantinescu, Krishnan Mahesh AND Parviz Moin
1. Motivation and objectives
As part of the Accelerated Strategic Computing Initiative (ASCI) program, an accu-
rate and robust simulation tool is being developed to perform high-fidelity LES studies
of multiphase, multiscale turbulent reacting flows in aircraft gas turbine combustor con-
figurations using hybrid unstructured grids. In the combustor, pressurized gas from the
upstream compressor is reacted with atomized liquid fuel to produce the combustion
products that drive the downstream turbine. The Large Eddy Simulation (LES) ap-
proach is used to simulate the combustor because of its demonstrated superiority over
RANS in predicting turbulent mixing, which is central to combustion.
CDP is the flagship LES code being developed by the combustor group to perform LES
of reacting multiphase flow in complex geometry. CDP is named after the late Charles
David Pierce (1969-2002) who made several lasting contributions to the LES of react-
ing flows and to this ASCI program. CDP is a parallel unstructured finite-volume code


Source: Apte, Sourabh V. - School of Mechanical, Industrial, and Manufacturing Engineering, Oregon State University
Mahesh, Krishnan - Department of Aerospace Engineering and Mechanics, University of Minnesota


Collections: Engineering