Numerical simulations of a thermocline in a pressure driven flow between two infinite horizontal plates
Artikel i övriga tidskrifter, 2005

Direct Numerical Simulations of pressure driven flow between two infinite horizontal plates with a stabilizing temperature difference imposed on the plates are presented, for different Grashof numbers. A thermocline-like solution is obtained. The thermocline decorrelate velocity fluctuations which results in a high mean flow velocity. Temperature fluctuations decorrelate from the vertical velocity fluctuations and it is found that although and increase with Grashof number, decreases. It is argued from the simulations that this behavior is due to internal gravity waves. It is also found that the demands on the size of the computational box increasesas with Grashof number.

relaminarisation

buoyancy

DNS

dynamic one eq-model

thermocline

Författare

Robert Moestam

Chalmers, Institutionen för radio- och rymdvetenskap

Lars Davidson

Chalmers, Tillämpad mekanik

Physics of Fluids

1070-6631 (ISSN) 1089-7666 (eISSN)

Vol. 17 7 075109 (artno)-

Ämneskategorier

Annan fysik

DOI

10.1063/1.1902648

Mer information

Skapat

2017-10-07