Study of the Neutral Ekman Flow Using an Algebraic Reynolds Stress Model |
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| Authors: | Email author" target="_blank">A?F?KurbatskiiEmail author L?I?Kurbatskaya |
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| Institution: | 1.Khristianovich Institute of Theoretical and Applied Mechanics, Siberian Branch,Russian Academy of Sciences,Novosibirsk,Russia;2.Institute of Computational Mathematics and Mathematical Geophysics, Siberian Branch,Russian Academy of Sciences,Novosibirsk,Russia |
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| Abstract: | A recently developed fully explicit algebraic model of Reynolds stress and turbulent heat flux in a thermally stratified planetary atmospheric boundary layer without stratification has been used for a numerical study of the Ekman turbulent boundary layer over a homogeneous rough surface for different dimensionless surface Rossby numbers. A comparative analysis has been conducted for a closure model of the transport term in the prognostic equation of turbulent kinetic energy dissipation including third-order moments. Dependences of the total wind rotation angle on the Rossby number have been obtained. The calculated vertical profiles of mean velocity, turbulent stress, turbulent kinetic energy, surface-friction velocity, and boundary-layer height agree satisfactorily with observational and earlier obtained LES data. |
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