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ORIGINAL PAPER
A Study of Chemically Reactive Species and Thermal Radiation Effects on an Unsteady MHD Free Convection Flow Through a Porous Medium Past a Flat Plate with Ramped Wall Temperature
1
Department of Mathematics, Gauhati University Guwahati, 781014, Assam, INDIA
2
Department of Mathematics, Cotton College Guwahati 781001, Assam, INDIA
3
Department of Mathematics, SonapurCollege Guwahati, 782402, Assam, INDIA
Online publication date: 2017-12-09
Publication date: 2017-12-20
International Journal of Applied Mechanics and Engineering 2017;22(4):945-964
KEYWORDS
ABSTRACT
An investigation of the effects of a chemical reaction and thermal radiation on unsteady MHD free convection heat and mass transfer flow of an electrically conducting, viscous, incompressible fluid past a vertical infinite flat plate embedded in a porous medium is carried out. The flow is induced by a general time-dependent movement of the vertical plate, and the cases of ramped temperature and isothermal plates are studied. An exact solution of the governing equations is obtained in closed form by the Laplace Transform technique. Some applications of practical interest for different types of plate motions are discussed. The numerical values of fluid velocity, temperature and species concentration are displayed graphically whereas the numerical values of skin friction, Nusselt number and Sherwood number are presented in a tabular form for various values of pertinent flow parameters for both ramped temperature and isothermal plates.
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