Numerical modeling of environmental flows using DAM: Some preliminary results

• Autorzy: Walters R. A. , Plew D. R.
• Języki publikacji: EN

Abstrakty

EN

Development of closures and parameterizations for subgrid scale effects is a significant and longstanding problem in the numerical simulation of environmental flows. The model described herein uses a rigorous approach for developing double-averaged governing equations — first a traditional Reynolds averaging to derive the Reynolds averaged Navier-Stokes equation (RANS), then a volume average to derive a set of double-averaged equations (DANS). An existing finite element flow model is then modified to accommodate these equations. This process gives rise to several new terms that require closures, as well as a new equation for free surface elevation. This paper is directed toward model development and uses several existing closure schemes as test cases.

Słowa kluczowe

EN

hydrodynamics; double-averaging; closures; form drag

• Wydawca: Instytut Geofizyki PAN ; Springer
• Czasopismo: Acta Geophysica
• Rocznik: 2008
• Tom: Vol. 56, no. 3
• Strony: 918--934
• Opis fizyczny: bibliogr. 21 poz.

Twórcy

autor

Walters R. A.

autor

Plew D. R.

• National Institute for Water and Atmospheric Research, Christchurch, New Zealand,

Bibliografia

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