Toward Predictive Simulations of Turbulent Multiphase Combustion Processes in Advanced Combustion Systems
Speaker: Joe Oefelein, Combustion Research Facility, Sandia National Laboratories
Department: Mechanical & Aerospace Engineering
Location: Bowen Hall Auditorium 222
Date/Time: Friday, October 11, 2013, 3:30 p.m. - 4:30 p.m.
Progress in the application of the Large Eddy Simulation (LES) technique for prediction of high-pressure high-Reynolds-number turbulent multiphase combustion processes in transportation, propulsion, and power devices will be presented. The primary objectives are to enable predictive simulations over a wide range of operating conditions, to establish a hierarchy of validated benchmark cases relevant to device-scale systems, and to establish technical performance metrics that define model implementation requirements and accuracy in the context of LES. Our approach involves four basic steps. 1) Establish complementary links between basic and applied research programs. 2) Establish close coordination with related target experiments designed for model validation. 3) Build our theoretical-numerical capabilities through development of advanced sub-models for LES. 4) Maximize the benefits of high-performance massively-parallel computing through close collaborations with key DOE computational facilities. Model development aimed at the treatment of high-pressure fuel injection processes and turbulent mixed-mode combustion will be described with emphasis on systematic validation and future needs.
Joe Oefelein received a Doctorate in Mechanical Engineering from Penn State University in May 1997. He worked as a Research Associate in the Department of Mechanical Engineering at Stanford University with Professor W. C. Reynolds from 1997 to December 2000. After completing his postdoctoral studies, he accepted a permanent position at the Sandia National Laboratories, Combustion Research Facility (CRF), where he is now employed as a Distinguished Member of Technical Staff. Joe has extensive experience in the development and application of the large-eddy-simulation (LES) technique and related sub-models, with emphasis on treatment of turbulent combustion, high-pressure supercritical phenomena, and multiphase flows. He also has significant experience in advanced CFD methods and massively-parallel high-performance computing.