Publikationsdatum:
2019-06-28
Beschreibung:
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.
Schlagwort(e):
FLUID MECHANICS AND HEAT TRANSFER
Materialart:
NASA-TM-89460
,
A-87220
,
NAS 1.15:89460
Format:
application/pdf
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