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RESEARCH PAPERS

Laminar Free Convection From a Sphere

[+] Author and Article Information
T. Chiang

Department of Aeronautics and Astronautics, New York University, Bronx, N. Y.

A. Ossin, C. L. Tien

Department of Mechanical Engineering, University of California, Berkeley, Calif.

J. Heat Transfer 86(4), 537-541 (Nov 01, 1964) (5 pages) doi:10.1115/1.3688739 History: Received August 13, 1963

Abstract

The present paper is concerned with the solution to the problem of external free-convective flow from a sphere with various prescribed thermal conditions on the surface. Exact numerical solutions and heat-transfer results of the boundary-layer equations were obtained for the case of uniform surface temperature and the case of uniform surface heat flux, both at a Prandtl number of 0.70. Temperature and velocity profiles at various angular positions along the sphere surface and local heat-transfer results are presented. A comparison between the exact solution and the approximate solution from the integral method is also presented.

Copyright © 1964 by ASME
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