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Slip effects on mixed convective stagnation-point flow and heat transfer over a vertical surface

Aman, Fazlina and Ishak, Anuar and Pop, Ioan (2013) Slip effects on mixed convective stagnation-point flow and heat transfer over a vertical surface. In: Prosiding Seminar Kebangsaan Aplikasi Sains dan Matematik 2013 (SKASM 2013) , 29-30 Oktober 2013, Batu Pahat, Johor .

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Abstract

This paper considers the steady mixed convection boundary layer flow of a viscous and incompressible fluid near the stagnation point on a vertical surface with slip effect. The temperature of the sheet and the velocity of the external flow are assumed to vary linearly with the distance from the stagnation point. The governing partial differential equations are first transformed into a system of ordinary differential equations, which is then solved numerically by a shooting method. The features of the flow and heat transfer characteristics for different values of the governing parameters are analyzed and discussed. Both assisting and opposing flows are considered. The results indicate that for the opposing flow, dual solutions exist for a certain range of the buoyancy parameter, while for the assisting flow, the solution is unique. In general, the effect of velocity slip is to reduce the wall shear stress and increase the heat transfer rate at the surface, while the thermal slip gives a vice versa behavior on the physical quantities.

Item Type: Conference or Workshop Item (Paper)
Uncontrolled Keywords: dual solutions; heat transfer; mixed convection; stagnation point; slip
Subjects: Q Science > QC Physics
Divisions: Faculty of Applied Science and Technology > Department of Science and Mathematics
Depositing User: Normajihan Abd. Rahman
Date Deposited: 02 Jan 2014 07:39
Last Modified: 21 Jan 2015 07:42
URI: http://eprints.uthm.edu.my/id/eprint/4527
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