RESEARCH PAPERS: Natural and Mixed Convection

Developing Free Convection in Open-Ended Vertical Eccentric Annuli With Isothermal Boundaries

[+] Author and Article Information
M. A. I. El-Shaarawi, E. M. A. Mokheimer

Mechanical Engineering Department, King Fahd University of Petroleum and Minerals, Dhahran 31261, Saudi Arabia

J. Heat Transfer 121(1), 63-72 (Feb 01, 1999) (10 pages) doi:10.1115/1.2825967 History: Received September 24, 1996; Revised June 26, 1998; Online December 05, 2007


A model has been developed to numerically study the developing laminar free convection in vertical open-ended eccentric annuli with isothermal boundary conditions. For a fluid of Prandtl number 0.7 in an annulus of radius ratio 0.5, the developing velocity profiles in addition to the development of the pressure along the annulus are presented. The channel heights required to naturally induce different flow rates have also been obtained for three values of the dimensionless eccentricity, namely, 0.1, 0.5, and 0.7. Variations of the total heat absorbed by the fluid with the channel height are provided for the three values of dimensionless eccentricity.

Copyright © 1999 by The American Society of Mechanical Engineers
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