Computing Some Critical Multiscale Phenomena in Fluids and Combustion

Speaker: Ahmed F. Ghoniem, Massachusetts Institute of Technology
March 30, 2015

Presentation

Abstract

Fluid mechanics and combustion are riddled with critical multiscale phenomena, such as turbulence, flame stabilization and structural transitions, combustion dynamics and instability, etc., all have significant technological impact and generate plenty of scientific curiosity. Given the underlying complex interactions between macroscale dynamics and microscale kinetics and transport, it is no wonder that significant advances are required to compute them accurately. I will review some such phenomena in energy and propulsion and ongoing work in our group to address related computational challenges, focusing on recent simulations of selected processes in flame stabilization in turbulent jets and premixed combustion using hybrid Lagrangian-Eulerian methods and adaptive meshes with immersed boundaries.

Biography

Ahmed F. Ghoniem is the Ronald C. Crane Professor of Mechanical Engineering, and Director of the Center for Energy and Propulsion Research at Massachusetts Institute of Technology. He received his B.Sc. and M.Sc. degree from Cairo University, and Ph.D. at the University of California, Berkeley. His research covers computational methods with focus on multiscale methods for turbulent combustion, mixing in supercritical fluids, fluidization; and clean combustion dynamics and active control, energy conversion with focus on CO2 capture technologies and renewable fuels production. He has supervised more than 100 graduate students and post-doctoral students, published more than 300 refereed articles in leading journals and conferences. He is Fellow of ASME and associate fellow of AIAA.

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