Preliminary Study of the Turbulence Structure in Supersonic Boundary Layers using DNS Data

TitlePreliminary Study of the Turbulence Structure in Supersonic Boundary Layers using DNS Data
Publication TypeConference Papers
Year of Publication2005
AuthorsTaylor EM, Martin, M.P, Smits AJ
Conference Name35th AIAA Fluid Dynamics Conference
Date Published2005///
Conference LocationToronto, Canada
Abstract

Direct numerical simulation data are used to visualize coherent structures in turbulentboundary layers at Mach numbers from 0.3 to 7. Different criteria to identify the three-
dimensional turbulence structure are selected. We find that using the discriminant of the
velocity gradient tensor, the swirling strength and the λ2 criteria give nearly identical
results, with λ2 identifying more structures very close to the wall.