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RESEARCH PAPERS

Unsteady Mixed Convection Near the Stagnation Point in Three-Dimensional Flow

[+] Author and Article Information
M. Kumari, G. Nath

Department of Applied Mathematics, Indian Institute of Science, Bangalore 560012, India

J. Heat Transfer 104(1), 132-138 (Feb 01, 1982) (7 pages) doi:10.1115/1.3245039 History: Received March 16, 1981; Online October 20, 2009

Abstract

The combined effect of forced and free convection on the unsteady laminar incompressible boundary-layer flow with mass transfer at the stagnation point of a three-dimensional body with time dependent wall temperature has been studied. Both semisimilar and self-similar solutions have been obtained. The governing equations have been solved numerically using an implicit finite-difference scheme. The results indicate that the buoyancy force strongly affects the skin friction whereas its effect on the heat transfer is comparatively less. However, the heat transfer is significantly changed due to the wall temperature which varies with time, but the skin friction is little affected by it. The mass transfer and Prandtl number affect both the skin friction and heat transfer. The buoyancy force which assists the forced flow causes an overshoot in both the velocity components.

Copyright © 1982 by ASME
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