Journal of Northeastern University Natural Science ›› 2017, Vol. 38 ›› Issue (9): 1268-1273.DOI: 10.12068/j.issn.1005-3026.2017.09.012

• Materials & Metallurgy • Previous Articles     Next Articles

Numerical Simulation of Flow,Heat Transfer and Mass Transfer for Stagnation Point MHD Layer Flow

TIAN Xi-yan1, LIU Yu-qiang1,2, LEI Hong1, LI Ben-wen3   

  1. 1. Key Laboratory of Electromagnetic Processing of Materials, Ministry of Education, Northeastern University, Shenyang 110819, China; 2. Intel Semiconductor
  • Received:2016-03-02 Revised:2016-03-02 Online:2017-09-15 Published:2017-09-08
  • Contact: TIAN Xi-yan
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Abstract: When a heated infinite permeable flat plate made of porous media lays horizontally in a steady magnetic field and an electrically conducting fluid with lower temperature flows vertically towards the plate, a thin boundary layer can be formed in the vicinity of the stagnation point over the plate. The fluid flow, heat transfer and mass transfer within this boundary layer were investigated numerically and the radiation effect was studied. After using the Rosseland approximation to describe the radiative heat flux, the constitutive equations can be solved by the collocation spectral method (CSM)in the domain discretization. The effects of suction/injection parameter(fW), magnetic parameter(M),radiation parameter (R)and convection heat transfer parameter on the flow in the boundary layer, heat transfer, mass transfer, skin friction coefficient, Nusselt number and Sherwood number were discussed.The results indicate that with the increasing of fW and M, the flow boundary layer becomes thicker, while the thermal boundary layer becomes thicker with the increasing of R.

Key words: stagnation point, collocation spectral method (CSM), boundary layer, porous media, electrically conducting fluid

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