Joe D. Hoffman, Ph.D., is professor emeritus at the School of Mechanical Engineering at Purdue University, West Lafayette, Indiana, USA. He taught graduate courses in computational fluid dynamics, gas dynamics, and numerical methods and directed graduate research in computational fluid dynamics and propulsion. Steven Frankel, Ph.D., is a professor at the School of Mechanical Engineering at Purdue University, West Lafayette, Indiana, USA. His research interests include modeling and simulation of turbulent flows with an emphasis on the development and application of LES to turbulent reacting flows, aeroacoustics, and multiphase and biological flows.
