Analysis of thermally developing flow in porous media under local thermal non-equilibrium conditions

被引:59
|
作者
Ouyang, Xiao-Long [1 ,2 ]
Vafai, Kambiz [2 ]
Jiang, Pei-Xue [1 ]
机构
[1] Tsinghua Univ, Dept Thermal Engn, Key Lab Utilizat & Reduct Technol CO2, Beijing 100084, Peoples R China
[2] Univ Calif Riverside, Dept Mech Engn, Riverside, CA 92521 USA
基金
中国国家自然科学基金;
关键词
Local thermal non-equilibrium; Thermally developing; Porous media; Analytical solution; CONVECTION HEAT-TRANSFER; BOUNDARY-CONDITIONS; NONTHERMAL EQUILIBRIUM; FLUX BIFURCATION; NON-DARCIAN;
D O I
10.1016/j.ijheatmasstransfer.2013.08.056
中图分类号
O414.1 [热力学];
学科分类号
摘要
In the present study, analytical solutions for thermally developing flows in porous media under local thermal non-equilibrium (LTNE) condition are derived for different fundamental models. The analytical solutions are validated by comparison with the numerical results. Based on the analytical solutions, the local Nusselt number is obtained, and the dimensionless thermal entry length is predicted. The results are presented in terms of the pertinent physical parameters such as the Biot number and the effective thermal conductivity ratio of the fluid to solid phases. (C) 2013 Elsevier Ltd. All rights reserved.
引用
收藏
页码:768 / 775
页数:8
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