流经有热辐射的无限垂直多孔平板时非稳定MHD流动的Soret和Dufour效应

V·锡里尼哇沙·劳; L·安纳德·巴布

doi:10.3879/j.issn.1000-0887.2010.12.002

流经有热辐射的无限垂直多孔平板时非稳定MHD流动的Soret和Dufour效应

doi: 10.3879/j.issn.1000-0887.2010.12.002

奥斯马尼亚大学科学学院力学系,海得拉巴-〖KG0.3mm〗07,A.P,印度

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中图分类号: O361
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出版历程
- 收稿日期: 1900-01-01
- 修回日期: 2010-10-29
- 刊出日期: 2010-12-15

Soret and Dufour Effects on Unsteady MHD Flow Past an Infinite Vertical Porous Plate With Thermal Radiation

Department of Mathematics, University College of Science, Osmania University, Hyderabad 500007, Andhra Pradesh, India

摘要

摘要: 不可压缩粘性导电流体，流经无限垂直多孔平板，平板存在振荡吸入速度和热辐射时，研究流动参数对自由对流和传质的非稳定磁流体动力学流动的Dufour(扩散热)和Soret(热扩散)效应．应用有限单元法，数值求解该问题的速度、温度和浓度场，还得到了表面摩擦、传热传质率的表达式．数值结果以图表方式给出，对外表致冷的平板(Gr＞0)和外表加热的平板(Gr＜0)，给出了该方程中所遇参数的影响．
- 传质 /
- MHD流动 /
- 垂直平板 /
- 吸入速度 /
- Soret数和Dufour数 /
- 热辐射 /
- 有限单元法
Abstract: The objectives of the present study are to investigate the effect of flow parameters on free convection and mass transfer unsteady magnetohydrodynamic flow of an electrically conducting,viscous,in compressible fluid pastan infinite vertical porous plate under oscillatory suction velocity and thermal radiation by taking into account the Dufour (diffusion thermo) and Soret (thermal diffusion) effects.The problem is solved numerically by using finite element method for velocity,temperature and concentration field and also the expression for skin friction,rate of heat and mass transfer have been obtained.The results obtained have been presented numerically through graphs and tables for externally cooled plate (Gr>0) and externally heated plate (Gr<0) to observe the effects of various param eters encountered in the equations.
- mass transfer /
- MHD flow /
- vertical plate /
- suction velocity /
- Soret and Du four numbers /
- thermal radiation /
- finite element method

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参考文献(23)

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