Seminar: Low-Frequency Unsteadiness in 2D Separated Slows: from Supersonic to Subsonic

Abstract

Results from a recent LES computation of a M=0.9 separated flow will be presented and compared with data from shock wave-boundary layer interactions. Using a newly defined length scale, direct comparisons between the various flowfields will be made with an emphasis put on the low--frequency breathing of the bubble and its imprint on the wall pressure. Approaches to normalize in amplitude and frequency in the low frequency region of the wall pressure spectra will be presented and discussed.  

About the Speaker

Dr. Lionel Larcheveque received his PhD in fluid mechanics from Sorbonne University in 2003 while working at ONERA. Since 2004, he has been assistant professor at Aix-Marseille University and a member of the supersonic group of the IUSTI laboratory. His research interests include high-fidelity simulation of turbulent flows, aeroacoustics and unsteadiness in compressible separated flows.