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RESEARCH PAPERS

A Numerical Study of Turbulent Heat Transfer in a Spherical Annulus

[+] Author and Article Information
W. Stein

Lawrence Livermore National Laboratory, Livermore, CA 94550

H. Brandt

Mechanical Engineering Dept., University of California, Davis, Davis, CA 95616

J. Heat Transfer 110(4a), 870-876 (Nov 01, 1988) (7 pages) doi:10.1115/1.3250587 History: Received June 12, 1987; Online October 20, 2009

Abstract

A numerical study of steady, buoyant, incompressible water flow and heat transfer through a spherical annulus has been made. A two-dimensional computer code based on the TEACH code was rewritten in spherical coordinates to model the Navier–Stokes equation and to model fluid turbulence with a k–ε turbulence model. Results are given for the total system Nusselt number, local heat transfer rate, and fluid flow characteristics for both buoyant and nonbuoyant laminar and turbulence modeled flow. Incorporating both the turbulence model and buoyancy into the calculations improves the results.

Copyright © 1988 by ASME
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