MHD Convective Heat and Mass Transfer Flow of a Newtonian Fluid Past a Vertical Porous Plate with Chemical Reaction, Radiation Absorption and Thermal Diffusion

Abstract:

In this manuscript, we have investigated the influence of radiation absorption on an unsteady MHD convective heat and mass transfer flow of a Newtonian fluid past a vertical porous plate in the presence of thermal radiation and chemical reaction. The non dimensional governing equations have been solved by using a multiple perturbation method, subject to the corresponding boundary conditions. The effects of various physical parameters such as velocity, temperature and concentration are studied through graphs. The expressions for local skin friction, Nusselt number and Sherwood number are derived and discussed with the help of a table. It is noticed that velocity increases when an increase in modified Grashof number Gm, radiation absorption parameter χ, Sorret number S₀, time t whereas it decreases when an increase in Schmidt number Sc, chemical reaction parameter Kr and radiation parameter F. Temperature increases with an increase in radiation parameter χ and Sorret number S₀ whereas it decreases with an increase in chemical reaction parameter Kr, F and ϕ. Concentration is observed to be decreased when chemical reaction parameter Kr and Schmidt number Sc increase whereas it increases with an increase in Sorret number S₀. Skin friction increases with an increase modified Grashof number Gm, radiation parameter χ and Sorret number S₀ whereas it has reverse effect in the case of Schmidt number Sc, chemical reaction parameter Kr. Nusselt number increases with an increase in Sc, S₀, χ whereas it has reverse effect in the case of Kr. Sherwood number gets decreased when Sc, χ and Kr both are increased whereas it has shown revere effect in the case of S₀.

• Periodical: International Journal of Engineering Research in Africa (Volume 19)
• Pages: 37-56
• DOI: https://doi.org/10.4028/www.scientific.net/JERA.19.37
• Online since: October 2015
• Authors: M. Umamaheswar, M.C. Raju*, S. Vijaya Kumar Varma
• Keywords: Chemical Reaction, Heat, Mass Transfer, MHD, Newtonian Fluid, Porous Medium, Radiation Absorption, Thermal Radiation, Vertical Plate

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