Unsteady mixed convection with double diffusion over a horizontal cylinder and a sphere within a porous medium

Kumari, M and Nath, G (1989) Unsteady mixed convection with double diffusion over a horizontal cylinder and a sphere within a porous medium. In: Warme und Stoffubertragung-Thermo & Fluid Dynamics, 24 (2). pp. 103-109.

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Abstract

The combined effects of the permeability of the medium, magnetic field, buoyancy forces and dissipation on the unsteady mixed convection flow over a horizontal cylinder and a sphere embedded in a porous medium have been studied. The nonlinear coupled partial differential equations with three independent variables have been solved numerically using an implicit finite-difference scheme in combination with the quasilinearization technique. The skin friction, heat transfer and mass transfer increase with the permeability of the medium, magnetic field and buoyancy parameter. The heat and mass transfer continuously decrease with the stream-wise distance, whereas the skin friction increases from zero, attains a maximum and then decreases to zero. The skin friction, heat transfer and mass transfer are significantly affected by the free stream velocity distribution. The effect of dissipation parameter is found to be more pronounced on the heat transfer than on the skin friction and mass transfer

Item Type:	Journal Article
Publication:	Warme und Stoffubertragung-Thermo & Fluid Dynamics
Publisher:	Springer
Additional Information:	Copyright of this article belongs to Springer.
Department/Centre:	Division of Physical & Mathematical Sciences > Mathematics
Date Deposited:	26 Aug 2010 09:39
Last Modified:	19 Sep 2010 06:14
URI:	http://eprints.iisc.ac.in/id/eprint/31546

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