Study of the Neutral Ekman Flow Using an Algebraic Reynolds Stress Model
- Authors: Kurbatskii A.F.1, Kurbatskaya L.I.2
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Affiliations:
- Khristianovich Institute of Theoretical and Applied Mechanics, Siberian Branch
- Institute of Computational Mathematics and Mathematical Geophysics, Siberian Branch
- Issue: Vol 54, No 4 (2018)
- Pages: 336-343
- Section: Article
- URL: https://journals.rcsi.science/0001-4338/article/view/148562
- DOI: https://doi.org/10.1134/S0001433818040266
- ID: 148562
Cite item
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.
About the authors
A. F. Kurbatskii
Khristianovich Institute of Theoretical and Applied Mechanics, Siberian Branch
Author for correspondence.
Email: kurbat@itam.nsc.ru
Russian Federation, Novosibirsk, 630090
L. I. Kurbatskaya
Institute of Computational Mathematics and Mathematical Geophysics, Siberian Branch
Email: kurbat@itam.nsc.ru
Russian Federation, Novosibirsk, 630090