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Conjugate Effects on Steady Laminar Natural Convection Heat Transfer in Vertical Eccentric Annuli

El-Shaarawi, Maged A. I. and Mokheimer, Esmail M. A. and Jamal, Ahmad (2005) Conjugate Effects on Steady Laminar Natural Convection Heat Transfer in Vertical Eccentric Annuli. International Journal for Computational Methods in Engineering Science and Mechanics, 6 (4). pp. 235-250.

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Abstract

Combined conduction-free convection heat transfer in vertical eccentric annuli is numerically investigated using finite-difference technique. Numerical results are presented for a fluid of Prandtl number 0.7 in an annulus of radius ratio 0.5 and dimensionless eccentricity 0.5. The conjugation effect on the induced flow rate and the total heat absorbed in the annulus is presented for the case of one wall being isothermally heated while the other wall is kept at inlet fluid temperature. The conjugate effects are controlled by solid-fluid conductivity ratio, cylinder walls thickness and dimensionless channel height (i.e. Grashof number). Solid-fluid conductivity ratio is varied over a range that covers practical cases with commonly encountered inner and outer walls thickness. Values of conductivity ratio over which conjugate effect can be neglected have been obtained.



Item Type:Article
Date:02 May 2005
Date Type:Publication
Subjects:Mechanical
Divisions:College Of Engineering Sciences > Mechanical Engineering Dept
Creators:El-Shaarawi, Maged A. I. and Mokheimer, Esmail M. A. and Jamal, Ahmad
Email:magedas@kfupm.edu.sa, esmailm@kfupm.edu.sa, ahmadj@kfupm.edu.sa
ID Code:477
Deposited By:AHMAD JAMAL
Deposited On:19 Mar 2008 11:04
Last Modified:12 Apr 2011 13:06

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