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AEM Seminar: Hypersonic Turbulent Boundary Layer Flows

Dr. Rodney Bowersox, Department Head, Professor, Director of TAMU National Aerothermochemistry Laboratory, Ford Motor Co. Design Professorship I, Texas A & M University

2:30 PM on 2018-03-30

Akerman 319


Abstract:

National interest in hypersonic flight provides motivation for accurate simulation of high-speed viscous flow. The purpose of this presentation is to explain our approach and progress in developing and validating turbulence closure for boundary layer flows with mechanical and/or thermochemical non-equilibrium. First, we overview key research challenges associated with hypersonic viscous flow. Second, we examine mathematical treatments founded in second order transport, and algebraic reductions thereof, with direct comparisons to available LES and DNS data from the literature. Third, we discuss results from an experimental campaign to characterize the role of pressure gradient driven mechanical non-equilibrium on the hairpin structure, energy spectra, and Reynolds averaged statistics, with comparison to Reynolds shear stress transport modeling. The presentation is concluded with a preview into our new adventures in modeling and experiments at high enthalpy.

Bio:

Dr. Bowersox is the Ford I Professor and Department Head of Aerospace Engineering at Texas A & M University. He received his PhD in Aerospace Engineering from Virginia Polytechnic Institute & State University in 1992. He founded and directs the Texas A & M University National Aerothermochemistry and Hypersonics Laboratory. He is a fellow of the American Society of Mechanical Engineering, Associate Fellow of the American Institute of Aeronautics and Astronautics, and Member of the American Chemical Society, American Physical Society, and the Optical Society of America. He is also an Associate Editor for the AIAA Journal of Propulsion and Power. He is a 2017 DoD Vannevar Bush Faculty Fellow.


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