DNS and modeling of turbulent heat transfer in channel flow with various Prandtl numbers

被引：0
|
作者：
Kawamura, H [1 ]
Kawamoto, N [1 ]
Abe, H [1 ]
Matsuo, Y [1 ]
Yamamoto, K [1 ]
机构：
[1] Tokyo Univ Sci, Fac Sci & Technol, Dept Engn Mech, Noda, Chiba 278, Japan
来源：
HEAT TRANSFER 1998, VOL 4: GENERAL PAPERS | 1998年
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中图分类号：
O414.1 [热力学];
学科分类号：
摘要：
The direct numerical simulation (DNS) of turbulent heat transfer in a two-dimensional channel flow was carried out for various Prandtl numbers ranging from 0.025 to 5.0. The present study is to propose a turbulent heat flux model based on the linearity principle in consideration of the Prandtl number effect and to compare the model with the DNS data. In addition, the instantaneous profiles of the temperature fluctuations and budget terms in the transport equation of the turbulent heat flux are visualized with the use of the DNS results. The effect of the Prandtl number is discussed.
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页码：193 / 198
页数：6
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