ARTICLE:

• DNS OF TURBULENT HEAT TRANSFER IN PLANE COUETTE FLOW  download article

S. Hane
Tokyo University of Science, Noda-shi, Chiba, Japan

T. Tsukahara
Department of Mechanical Engineering, Tokyo University of Science, Noda-shi, Chiba 278-8510, Japan

K. Iwamoto
Department of Mechanical Engineering, Tokyo University of Science, Noda-shi, Chiba 278-8510, Japan

H. Kawamura
Department of Mechanical Engineering, Tokyo University of Science, 278-8510 Chiba, Japan

ABSTRACT

Direct numerical simulation of turbulent heat transfer in a plane Couette flow at a Reynolds number of 8600 (based on the relative wall speed and the channel width) has been performed with emphasis on a large-scale turbulence structure (LSS). Two kinds of boundary temperature conditions are employed; these are the uniform heat flux heating (UHF) and the constant temperature difference between the both walls (CTD). A series of DNS has been carried out for several larger computational box sizes than those of existing DNS to examine their effect upon the LSS and the statistical quantities such as temperature variance. The differences caused by the box size and the boundary conditions of temperature field are discussed with respect to the LSS.

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