Roughness-induced transition of compressible laminar boundary layers

old_uid8142
titleRoughness-induced transition of compressible laminar boundary layers
start_date2010/02/11
schedule12h-13h
onlineno
summaryDirect numerical simulation is used to study flow over a roughness element in a flat plate boundary layer at high speed. The roughness element is modeled as a continuous bump with a height that is approximately half the boundary-layer thickness. Simulations with a variety of Mach numbers and wall temperatures have been run over a range of Reynolds numbers, and the results are used to establish a criterion for turbulent breakdown.
responsiblesAujol, Beauchard, Pauchont