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多孔介质期刊
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ISSN 打印: 1091-028X
ISSN 在线: 1934-0508

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多孔介质期刊

DOI: 10.1615/JPorMedia.v10.i6.80
pages 625-631

On the Effectiveness of Porosity on Stagnation Point Flow with Heat Transfer over a Permeable Surface

Hazem Ali Attia
Department of Mathematics, College of Science, Al-Qasseem University, P.O. Box 237, Buraidah 81999, Kingdom of Saudi Arabia; On leave from: Department of Engineering Mathematics and physics, Faculty of Engineering, El-Fayoum University, El-Fayoum, Egypt

ABSTRACT

The effect of porosity on the steady flow of an incompressible viscous fluid impinging on a permeable surface is investigated with heat transfer. A numerical solution for the governing nonlinear momentum and energy equations is obtained. The effect of the porosity of the medium and the suction or injection velocity on both the flow and heat transfer are outlined. The results indicate that increasing the porosity parameter M decreases both the velocity and thermal boundary layer thickness. On the other hand, the wall shear stress increases with increasing porosity of the medium.


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