Record Details     « New Search       Brief Record Full Record MARC Record     Bibliographic Data Control Number 77123 Date and Time of Latest Transaction 20110811104656.AM General Information 110811s |||||||||b ||00||| Cataloging Source PCASTRD-DOST Language Code eng Main Entry - Personal Name G. Math   Kumari, M. Title Statement Double diffusive unsteady free convection on two-dimensional and axisymmetric bodies in a porous medium Physical Description 379-391 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 Term Unsteady free convection   Porous medium   Magnetic field           Physical Location           Digital Copy Not Available          Add to Book Cart  |   Download MARC