充满多孔介质的方腔内双扩散自然对流格子Boltzmann模拟

李贝贝; 严祯荣; 陈建; 徐洪涛; 杨茉

doi:10.3879/j.issn.1000-0887.2016.02.007

充满多孔介质的方腔内双扩散自然对流格子Boltzmann模拟

doi: 10.3879/j.issn.1000-0887.2016.02.007

¹上海理工大学能源与动力工程学院, 上海 200093;²上海市特种设备监督检验技术研究院, 上海 200062

基金项目: 国家自然科学基金（51276117) ;上海市优秀学科带头人计划（B类）（15XD1522700）

详细信息

作者简介:
李贝贝（1991—），女，硕士生(E-mail: 634451894@qq.com);徐洪涛(1976—)，男，副教授，博士，硕士生导师(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: 2015-07-28
- 修回日期: 2015-09-06
- 刊出日期: 2016-02-15

Lattice Boltzmann Simulation of Double Diffusive Natural Convection in a Square Enclosure Filled With Porous Medium

¹School of Energy and Power Engineering, University of Shanghai for Science and Technology, Shanghai 200093, P.R.China;²Shanghai Institute of Special Equipment Inspection & Technical Research,Shanghai 200062, P.R.China

Funds: The National Natural Science Foundation of China(51276117)

摘要

摘要: 采用格子Boltzmann方法，对4个壁面均为低温、低浓度，内置高浓度发热圆的充满均匀多孔介质的方腔内双扩散自然对流现象进行了数值模拟研究.分析了Darcy(达西)数D_a(10^-4≤D_a≤10^-2)和浮升力比B(-5.0≤B≤5.0)对内部发热圆表面平均Nusselt(努赛尔)数Nu_av和平均Sherwood(舍伍德)数Sh_av的影响.模拟结果表明：除B=-1.0时，Nu_av和Sh_av随D_a的增加而增大；当-5.0＜B＜5.0，在D_a=10^-4时，Nu_av和Sh_av几乎不受B变化的影响；在D_a=10^-3和D_a=10^-2时，Nu_av和Sh_av随B的增加先减小后增大，在B=-1.0时取得最小值
- 方腔 /
- 多孔介质 /
- 双扩散自然对流 /
- 格子Boltzmann /
- 数值模拟
Abstract: The lattice Boltzmann method was adopted to investigate the double diffusive natural convection in a square enclosure filled with porous medium. The temperature and concentration on surrounding walls were low and those on the inner heat cylinder surface were high. The influences of Darcy number D_a(10^-4≤D_a≤10^-2) and buoyancyratio B(-5.0≤B≤5.0) on average Nusselt number Nu_av and Sherwood number Sh_av on the heat cylinder surface were studied. The results indicate that both Nu_av and Sh_av increase with D_a except for the case of B=-1.0,and both Nu_av and Sh_av are almost independent of B for D_a=10^-4.Both Nu_av and Sh_av first decrease and then increase with B increasing from -5.0 to 5.0 for D_a=10^-3 and 10^-2 and reach the minimal value for B=-1.0.
- square enclosure /
- porous medium /
- double diffusive natural convection /
- lattice Boltzmann /
- numerical simulation

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参考文献(16)

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充满多孔介质的方腔内双扩散自然对流格子Boltzmann模拟

doi: 10.3879/j.issn.1000-0887.2016.02.007

作者简介:
李贝贝（1991—），女，硕士生(E-mail: 634451894@qq.com);徐洪涛(1976—)，男，副教授，博士，硕士生导师(通讯作者. E-mail: htxu@usst.edu.cn).

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Lattice Boltzmann Simulation of Double Diffusive Natural Convection in a Square Enclosure Filled With Porous Medium

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留言板

充满多孔介质的方腔内双扩散自然对流格子Boltzmann模拟

doi: 10.3879/j.issn.1000-0887.2016.02.007

作者简介: 李贝贝（1991—），女，硕士生(E-mail: 634451894@qq.com);徐洪涛(1976—)，男，副教授，博士，硕士生导师(通讯作者. E-mail: htxu@usst.edu.cn).

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出版历程

Lattice Boltzmann Simulation of Double Diffusive Natural Convection in a Square Enclosure Filled With Porous Medium

计量

出版历程

目录

作者简介:
李贝贝（1991—），女，硕士生(E-mail: 634451894@qq.com);徐洪涛(1976—)，男，副教授，博士，硕士生导师(通讯作者. E-mail: htxu@usst.edu.cn).