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TECHNICAL BRIEFS

Steady Laminar Convective Flow with Variable Properties Due to a Porous Rotating Disk

[+] Author and Article Information
Kh. Abdul Maleque

 American International University-Bangladesh, House-54/B, 21 Kemal Ataturk Avenue, Banani, Dhaka-1213, Bangladeshkhmaleque@yahoo.com

Md. Abdus Sattar

 North South University, Department of C S E, 12 Kemal Ataturk Avenue, Banani, Dhaka-1213, Bangladeshasattar@northsouth.edu

J. Heat Transfer 127(12), 1406-1409 (Jul 18, 2005) (4 pages) doi:10.1115/1.2098860 History: Received June 16, 2004; Revised July 18, 2005

The present paper investigates the effects of variable properties (density (ρ), viscosity (μ), and thermal conductivity (κ)) on steady laminar flow and heat transfer for a viscous fluid due to an impulsively started rotating porous infinite disk. These properties ρ, μ and κ are taken to be the functions of temperature. The system of axisymmetric nonlinear partial differential equations governing the steady flow and heat transfer are written in cylindrical polar coordinates and are reduced to nonlinear ordinary differential equations by introducing suitable similarity parameters. The resulting steady equations are solved numerically by using Runge-Kutta and Shooting methods, and the effects of the relative temperature difference and suction/injection parameters are examined.

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Copyright © 2005 by American Society of Mechanical Engineers
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Figures

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Figure 1

The flow configuration and the coordinate system

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Figure 2

(a) Effect of WS on the radial velocity profiles, and (b) effect of WS on the temperature profiles

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Figure 3

(a) Effect of γ on the radial velocity profiles; (b) effect of γ on the tangential velocity profiles; (c) effect of γ on the axial velocity profiles; and (d) effect of γ on the temperature profiles.

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