AN INVESTIGATION OF TURBULENT HEAT TRANSFER IN CHANNEL FLOWS BY LARGE EDDY SIMULATION

查看全文 作　　者：Dong Yu-hong, Zhong Feng-quan, Lu Xi-yun, Zhuang Li-xian Department of Mechanics and Mechanical Engineering, University of Science and Technology of China, Hefei 230026, China

出　　处：《Journal of Hydrodynamics》索引2002年第14卷第2期,共7页

基　　金：ThisstudywassupportedbytheNationalScienceFundforDistinguishedScholars (No :10 12 5 2 10 ),theChinaNKBRSFProject (No :2 0 0 1CB40 96 0 0 ),theProgramofHundredTalentsof (CAS) ,andtheProgramoftheTrans CenturyOutstandingYoungTrainingof(MOE) 摘　　要：Large Eddy Simulation (LES) of fully developed turbulent channel flow with heat transfer was performed to investigate the effects of the Reynolds number on the turbulence behavior. In the present study, the bottom wall of the channel was cooled and the top wall was heated. The Reynolds numbers, based on the central mean-velocity and the half-width of the channel, were chosen as 4000, 6000, 10 4 and 2×10 4, and the Prandtl number as 1.0. To validate our calculations, the present results were compared with available data obtained by Direct Numerical Simulation (DNS), which proves to be in good agreement with each other. To reveal the effects of the Reynolds number, some typical quantities, including the velocity fluctuations, temperature fluctuation, heat fluxes and turbulent Prandtl number, were studied. 关键词：Large EDDY Simulation (LES) TURBULENT channel flow Subgrid Scale (SGS) model heat transfer STRATIFIED TURBULENCE

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AN INVESTIGATION OF TURBULENT HEAT TRANSFER IN CHANNEL FLOWS BY LARGE EDDY SIMULATION

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