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Direct simulation of the stably stratified turbulent Ekman layerThe Navier-Stokes equations and the Boussinesq approximation were used to compute a 3D time-dependent turbulent flow in the stably stratified Ekman layer over a smooth surface. The simulation data are found to be in very good agreement with atmospheric measurements when nondimensionalized according to Nieuwstadt's local scaling scheme. Results suggest that, when Reynolds number effects are taken into account, the 'constant Froud number' stable layer model (Brost and Wyngaard, 1978) and the 'shearing length' stable layer model (Hunt, 1985) for the dissipitation rate of turbulent kinetic energy are both valid. It is concluded that there is good agreement between the direct numerical simulation results and large-eddy simulation results obtained by Mason and Derbyshire (1990).
Document ID
19930032673
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Coleman, G. N.
(Stanford Univ.; NASA, Ames Research Center Moffett Field, CA, United States)
Ferziger, J. H.
(Stanford Univ. CA, United States)
Spalart, P. R.
(NASA Ames Research Center Moffett Field, CA, United States)
Date Acquired
August 15, 2013
Publication Date
November 1, 1992
Publication Information
Publication: Journal of Fluid Mechanics
ISSN: 0022-1120
Subject Category
Fluid Mechanics And Heat Transfer
Accession Number
93A16670
Funding Number(s)
CONTRACT_GRANT: N00014-86-K-0157
Distribution Limits
Public
Copyright
Other

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