Thermal Radiation Effects on MHD Free Convection Flow Past an Impulsively Started Vertical Plate with Variable Surface Temperature and Concentration

Authors

  • S. Suneetha 1Department of Mathematics, Sri Venkateswara University, Tirupati
  • N. Bhaskar Reddy 1Department of Mathematics, Sri Venkateswara University, Tirupati
  • V. Ramachandra Prasad 2Professor of Applied Mathematics, Department of Mathematics, MITS, Madanapalle

DOI:

https://doi.org/10.3329/jname.v5i2.2695

Keywords:

Thermal radiation, MHD, viscous dissipation, vertical plate

Abstract

Thermal radiation effects on hydromagnetic free convection flow past an impulsively started vertical plate with variable surface temperature and concentration is analyzed, by taking into account the heat due to viscous dissipation. The governing boundary layer equations of the flow field are solved by an implicit finite difference method of Crank-Nicholson type. A parametric study is performed to illustrate the influence of radiation parameter, magnetic parameter, Grashof number, Prandtl number, Eckert number on the velocity, temperature and concentration profiles. Also, the local and average skin-friction coefficient, Nusselt number and Sherwood number are presented graphically. The numerical results reveal that an increase in thermal radiation reduces both the velocity and temperature in the boundary layer and a rise in viscous dissipation accelerates the flow.

 Key words: Thermal radiation, MHD, viscous dissipation, vertical plate.

DOI: 10.3329/jname.v5i2.2694  

Journal of Naval Architecture and Marine Engineering 5(2)(2008) 57-70

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Published

20.06.2009

How to Cite

Suneetha, S., Reddy, N. B., & Prasad, V. R. (2009). Thermal Radiation Effects on MHD Free Convection Flow Past an Impulsively Started Vertical Plate with Variable Surface Temperature and Concentration. Journal of Naval Architecture and Marine Engineering, 5(2), 57–70. https://doi.org/10.3329/jname.v5i2.2695

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