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RESEARCH PAPERS: Rock Mechanics

Effects of Surface Mass Transfer on Free Convection Flow Over Vertical Cylinder Embedded in a Saturated Porous Medium

[+] Author and Article Information
M.-J. Huang, C.-K. Chen

Department of Mechanical Engineering, National Cheng Kung University, Tainan, Taiwan, R.O.C.

J. Energy Resour. Technol 107(3), 394-396 (Sep 01, 1985) (3 pages) doi:10.1115/1.3231207 History: Received January 20, 1984; Revised December 18, 1984; Online October 22, 2009

Abstract

The heat-transfer characteristics for free convection associated with isothermal vertical cylinder with surface mass transfer (blowing or suction) embedded in a saturated porous medium are analyzed. The nonsimilar equations are solved by using a suitable variable transformation and employing an implicit finite difference method. The numerical results for Nusselt number are expressed as functions of the parameters, ξ and γ , which represent the effects of the cylinder curvature and the surface mass transfer, respectively. It is found that the local Nusselt numbers for a vertical cylinder are less sensitive to the surface mass transfer than those for a vertical plate. Blowing of mass decreases the heat transfer coefficient but the suction of mass increases the heat transfer coefficient.

Copyright © 1985 by ASME
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