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竖直平板嵌入非Darcy多孔介质时,数值研究流过平板的不稳定MHD自然对流中的Dufour和Soret效应

M·Q·艾欧德特 A·艾格汗迪

M·Q·艾欧德特, A·艾格汗迪. 竖直平板嵌入非Darcy多孔介质时,数值研究流过平板的不稳定MHD自然对流中的Dufour和Soret效应[J]. 应用数学和力学, 2012, 33(2): 195-209. doi: 10.3879/j.issn.1000-0887.2012.02.005
引用本文: M·Q·艾欧德特, A·艾格汗迪. 竖直平板嵌入非Darcy多孔介质时,数值研究流过平板的不稳定MHD自然对流中的Dufour和Soret效应[J]. 应用数学和力学, 2012, 33(2): 195-209. doi: 10.3879/j.issn.1000-0887.2012.02.005
Mohammed Q Al-Odat, Abdalmajeed Al-Ghamdi. Numerical Investigation of the Dufour and Soret Effects on Unsteady MHD Natural Convection Flow Past a Vertical Plate Embedded in a Non-Darcy Porous Medium[J]. Applied Mathematics and Mechanics, 2012, 33(2): 195-209. doi: 10.3879/j.issn.1000-0887.2012.02.005
Citation: Mohammed Q Al-Odat, Abdalmajeed Al-Ghamdi. Numerical Investigation of the Dufour and Soret Effects on Unsteady MHD Natural Convection Flow Past a Vertical Plate Embedded in a Non-Darcy Porous Medium[J]. Applied Mathematics and Mechanics, 2012, 33(2): 195-209. doi: 10.3879/j.issn.1000-0887.2012.02.005

竖直平板嵌入非Darcy多孔介质时,数值研究流过平板的不稳定MHD自然对流中的Dufour和Soret效应

doi: 10.3879/j.issn.1000-0887.2012.02.005
详细信息
  • 中图分类号: O357

Numerical Investigation of the Dufour and Soret Effects on Unsteady MHD Natural Convection Flow Past a Vertical Plate Embedded in a Non-Darcy Porous Medium

  • 摘要: 就竖直平板嵌入非Darcy多孔介质中,导电流体流过平板时作不稳定的二维磁流体(MHD)双扩散对流,数值研究了Dufour和Soret效应对流动的影响.用Crank-Nicolson型的隐式有限差分法,按三对角矩阵处理,求解无量纲的非线性控制方程.详细地研究了问题中出现的各种参数对不稳定无量纲的速度、温度和浓度曲线的影响.进一步地,给出并分析了表面摩擦因数、Nusselt数和Sherwood数随时间的变化.研究结果表明,不稳定速度、温度和浓度分布曲线,受Dufour和Soret的影响十分显著.随着Dufour数的增加或者Soret数的减小,表面摩擦因数和Sherwood数都在减小,而Nusselt数在增加.研究发现,当磁场参数增加时,边界层中的速度和温度在减小.
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出版历程
  • 收稿日期:  2011-05-20
  • 修回日期:  2011-11-10
  • 刊出日期:  2012-02-15

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