Analysis of thermal dissipation rates based on direct numerical and large-eddy Simulations of turbulent Rayleigh-Benard convection

被引：0
|
作者：
Shishkina, Olga [1 ]
Wagner, Claus [1 ]
机构：
[1] DLR, Inst Aerodynam & Flow Technol, Bunsenstr 10, D-37073 Gottingen, Germany
来源：
PROGRESS IN TURBULENCE II | 2007年 / 109卷
关键词：
D O I：
暂无
中图分类号：
O3 [力学];
学科分类号：
08 ; 0801 ;
摘要：
Two functions sigma and tau are defined to determine quantitatively the role of the turbulent background in thermal convection. Evaluating these functions from the data generated in the Direct Numerical Simulations (DNS) and Large-Eddy Simulations (LES) of turbulent Rayleigh-Benard convection in wide cylindrical containers it is shown that the turbulent background contribution to the volume averaged thermal dissipation rate increases with the Rayleigh number.
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页码：201 / +
页数：2
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