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Blowing/Suction Effect on Combined Convection in Stagnation Flow Over a Vertical Plate Embedded in a Porous Medium

Published online by Cambridge University Press:  05 May 2011

K.A. Yih
K.A. Yih*
Affiliation:
Department of General Course, Air Force Aeronautical and Technical School, Kang-shan, Kaohsiung, Taiwan 90395-2, R.O.C.
*
*Associate Professor
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Abstract

Blowing/suction effect on steady two-dimensional laminar combined convection owing to the stagnation flow against a vertical flat plate with linear wall temperature with distance in a saturated porous medium is numerically analyzed. The nonlinear coupled boundary-layer equations were transformed and the resulting ordinary differential equations were solved by Keller box method. Numerical results for the local friction coefficient and the local Nusselt number are presented for various parameters. In general, it is observed that in the buoyancy assisting (opposing) flow both the local friction coefficient and the local Nusselt number increase (decrease) because of the increase of buoyancy parameter, blowing/suction parameter and permeability parameter. The local Nusselt number becomes nearly constant when Ω is very small (pure fluid flow) and Ω is very large (pure Darcy flow).

Keywords

Combined convectionStagnation flowPorous media
Type
Articles
Information
Journal of Mechanics , Volume 15 , Issue 2 , June 1999 , pp. 41 - 45
Copyright
Copyright © The Society of Theoretical and Applied Mechanics, R.O.C. 1999

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References

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