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RESEARCH PAPERS

Laminar and Turbulent Natural Convection in the Annulus Between Horizontal Concentric Cylinders

[+] Author and Article Information
B. Farouk

Mechanical Engineering and Mechanics Department, Drexel University, Philadelphia, Pa. 19104

S. I. Güçeri

Mechanical and Aerospace Engineering Department, University of Delaware, Newark, Del. 19711

J. Heat Transfer 104(4), 631-636 (Nov 01, 1982) (6 pages) doi:10.1115/1.3245178 History: Received April 06, 1981; Online October 20, 2009

Abstract

Numerical solutions are presented for the steady-state, two-dimensional natural convection in the annulus between two horizontal concentric cylinders which are held at different constant temperatures. Solutions for the laminar case are obtained up to Rayleigh number (based on gap width, L) of 105 . Turbulent flow results are presented for the Rayleigh number range of 106 –107 . the k-ε turbulence model has been applied to obtain the results. Buoyancy effects on the turbulence structure are also accounted for. The results for both the laminar and turbulent cases are in good agreement with available experimental data and other solutions in the literature. All results presented are for the outer cylinder diameter to inner cylinder diameter ratio of 2.6.

Copyright © 1982 by ASME
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