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Control Number77123
Date and Time of Latest Transaction20110811104656.AM
General Information110811s |||||||||b ||00|||
Cataloging SourcePCASTRD-DOST
Language Codeeng
Main Entry - Personal NameG. Math
 Kumari, M.
Title StatementDouble diffusive unsteady free convection on two-dimensional and axisymmetric bodies in a porous medium
Physical Description379-391
Summary, Etc.The unsteady laminar free convection flow of an incompressible electrically conducting fluid over two-dimensional and exismmetric bodies embedded in a highly porous medium with an applied magnetic field has been studied. The unsteadiness in the flow field is caused by the variation of the wall temperature and concentration with time. The coupled nonlinear partial differential equations with three independent variables have been solved numerically using an implicit finite-difference scheme in combination with the quasilinearization technique. It is observed that the skin friction, heat transfer and mass transfer increase with the permeability parameter but the decrease with the magnetic parameter. The results are strongly dependent on the variation of wall temperature and concentration with time. The skin friction and heat transfer increase or decrease as the buoyancy forces from species diffusion assist or oppose the thermal buoyancy force. However, the mass transfer is found to be higher for small values of the ratio of the buoyancy paramaters than for large values
Subject Added Entry - Topical TermUnsteady free convection
 Porous medium
 Magnetic field
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