WIT Press

Large-eddy Simulation Of The Stable Boundary Layer And Implications For Transport And Dispersion

Price

Free (open access)

Paper DOI

10.2495/AIR990061

Volume

37

Pages

9

Published

1999

Size

766 kb

Author(s)

R.T. Cederwall & R.L. Street

Abstract

Large-eddy simulation (LES) of the evolving stable boundary layer (SBL) provides unique data sets for assessing the effects of stable stratification on transport and dispersion. The simulations include the initial development of the convective boundary layer (CBL) in the afternoon, followed by the development of an SBL after sunset with a strong, surface-based temperature inversion. The structure of the turbulence is modified significantly by negative buoyancy associated with the temperature inversion. The magnitude of velocity variances is reduced by an order of magnitude compared to that in the CBL, and th

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