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Direct simulation of a turbulent oscillating boundary layer (1987)

Spalart, Philippe R. ; Baldwin, Barrett S.

In: CASI

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Publication Date: 2019-06-28

Description: The 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.

Keywords: FLUID MECHANICS AND HEAT TRANSFER

Type: NASA-TM-89460 , A-87220 , NAS 1.15:89460

Format: application/pdf

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