On the thermally stratified atmospheric flow modeling

0352958 - ÚT 2011 RIV CZ eng C - Konferenční příspěvek (zahraniční konf.)
Sládek, Ivo - Kozel, K. - Jaňour, Zbyněk
On the thermally stratified atmospheric flow modeling.
Topical Problems of Fluid Mechanics 2010. Praha: Ústav termomechaniky, AV ČR, v. v. i., 2010 - (Příhoda, J.; Kozel, K.), s. 135-138. ISBN 978-80-87012-25-3.
[Topical Problems of Fluid Mechanics 2010. Praha (CZ), 10.02.2010-11.02.2010]
Výzkumný záměr: CEZ:AV0Z20760514
Klíčová slova: atmospheric boundary layer * turbulence model * finite volume method
Kód oboru RIV: DG - Vědy o atmosféře, meteorologie

The paper deals with a numerical study devoted to thermally /indifferently stratified atmospheric boundary layer flow. The main objective is related to definition of the model and flow conditions as well as to presentation of some first numerical results concerning the flow over selected hill configuration under the indifferent thermal conditions. The mathematical model is based on the system of Reynolds-averaged Navier Stokes (RANS)equations closed by two-equation k-e turbulence model together with wall functions.The thermal stratification is modeled using transport equation for the potential temperature. The finite volume method and the explicit Runge-Kutta time integration method are utilized for the numerics. A 2D-hill test case with a rough wall has been chosen to perform numerical test.
Trvalý link: http://hdl.handle.net/11104/0192328