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The Effects of Thermal Radiation, Hall Currents, Soret, and Dufour on MHD Flow by Mixed Convection over a Vertical Surface in Porous Media

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  • Stanford Shateyi
  • Sandile Sydney Motsa
  • Precious Sibanda

Abstract

The study sought to investigate the influence of a magnetic field on heat and mass transfer by mixed convection from vertical surfaces in the presence of Hall, radiation, Soret (thermal-diffusion), and Dufour (diffusion-thermo) effects. The similarity solutions were obtained using suitable transformations. The similarity ordinary differential equations were then solved by MATLAB routine bvp4c . The numerical results for some special cases were compared with the exact solution and those obtained by Elgazery (2009) and were found to be in good agreement. A parametric study illustrating the influence of the magnetic strength, Hall current, Dufour, and Soret, Eckert number, thermal radiation, and permeability parameter on the velocity, temperature, and concentration was investigated.

Suggested Citation

  • Stanford Shateyi & Sandile Sydney Motsa & Precious Sibanda, 2010. "The Effects of Thermal Radiation, Hall Currents, Soret, and Dufour on MHD Flow by Mixed Convection over a Vertical Surface in Porous Media," Mathematical Problems in Engineering, Hindawi, vol. 2010, pages 1-20, May.
    • Handle: RePEc:hin:jnlmpe:627475
    DOI: 10.1155/2010/627475
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