多孔介质复合方腔双扩散混合对流LBM模拟

陆威; 王婷婷; 徐洪涛; 陈建; 杨茉

doi:10.21656/1000-0887.370175

多孔介质复合方腔双扩散混合对流LBM模拟

doi: 10.21656/1000-0887.370175

上海理工大学能源与动力工程学院, 上海 200093

基金项目: 国家自然科学基金(51406121)

详细信息

作者简介:
陆威（1977—），女，讲师(E-mail: luweinora@163.com)；徐洪涛（1976—），男，副教授(通讯作者. E-mail: htxu@usst.edu.cn).

中图分类号: TK124
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出版历程
- 收稿日期: 2016-06-03
- 修回日期: 2016-12-05
- 刊出日期: 2017-07-15

LBM Simulation of Double Diffusive Mixed Convection in a Porous Medium Composite Cavity

School of Energy and Power Engineering, University of Shanghai for Science and Technology, Shanghai 200093, P.R.China

Funds: The National Natural Science Foundation of China(51406121)

摘要

摘要: 基于CLBGK模型，通过引入浓度分布函数，利用格子Boltzmann方法对顶盖驱动的复合方腔内的双扩散混合对流现象进行了研究，复合方腔由多孔介质区域和纯流体空间组成.在Richardson(理查德森)数Ri=1.0，Lewis(路易斯)数Le=2.0，Grashof(格拉晓夫)数Gr=10⁴和Prandtl(普朗特)数Pr=0.7时，分析了孔隙尺度下多孔介质层不同位置及浮升力比（-5.0≤N≤5.0）对复合方腔双扩散混合对流的影响.给出了浮升力比N及多孔介质层位置影响下的高温高浓度壁面上的平均Nusselt(努赛尔)数Nu_av、平均Sherwood(舍伍德)数Sh_av及当地Nusselt数Nu_local和Sherwood数Sh_local的分布规律.
- 多孔介质 /
- 复合方腔 /
- 双扩散 /
- LBM模拟
Abstract: Based on the coupled lattice Bhatnagar-Gross-Krook (CLBGK) model, the lattice Boltzmann method was used and the concentration distribution function was introduced to investigate the double diffusive mixed convection in a lid-driven composite cavity composed of a porous medium layer and the rest space full of pure fluid. At Ri=1.0, Le=2.0, Gr=10⁴, Pr=0.7, ε=0.7, the influences of the porous layer locations and the buoyancy ratios（-5.0≤N≤5.0） on the double diffusive mixed convection in the porous medium composite cavity were studied at the pore scale. Results presented in the distribution diagrams of local and average Nusselt and Sherwood numbers at the high temperature and concentration wall of the cavity show the mixed convection rule.
- porous medium /
- composite cavity /
- double diffusion /
- LBM simulation

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参考文献(28)

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多孔介质复合方腔双扩散混合对流LBM模拟

doi: 10.21656/1000-0887.370175

作者简介:
陆威（1977—），女，讲师(E-mail: luweinora@163.com)；徐洪涛（1976—），男，副教授(通讯作者. E-mail: htxu@usst.edu.cn).

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LBM Simulation of Double Diffusive Mixed Convection in a Porous Medium Composite Cavity

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留言板

多孔介质复合方腔双扩散混合对流LBM模拟

doi: 10.21656/1000-0887.370175

作者简介: 陆威（1977—），女，讲师(E-mail: luweinora@163.com)；徐洪涛（1976—），男，副教授(通讯作者. E-mail: htxu@usst.edu.cn).

计量

出版历程

LBM Simulation of Double Diffusive Mixed Convection in a Porous Medium Composite Cavity

计量

出版历程

目录

作者简介:
陆威（1977—），女，讲师(E-mail: luweinora@163.com)；徐洪涛（1976—），男，副教授(通讯作者. E-mail: htxu@usst.edu.cn).