Direct simulation of a turbulent oscillating boundary layerThe turbulent boundary layer driven by a freestream velocity that varies sinusoidally in time around a zero mean is considered. The flow has a rich behavior including strong pressure gradients, inflection points, and reversal. A theory for the velocity and stress profiles at high Reynolds number is formulated. Well-resolved direct Navier-Stokes simulations are conducted over a narrow range of Reynolds numbers, and the results are compared with the theoretical predictions. The flow is also computed over a wide range of Reynolds numbers using a new algebraic turbulence model; the results are compared with the direct simulations and the theory.
Document ID
19880051744
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Spalart, Philippe R. (NASA Ames Research Center Moffett Field, CA, United States)
Baldwin, Barrett S. (NASA Ames Research Center Moffett Field, CA, United States)