Low Knudsen Number Heat Transfer From Two Spheres in Contact

[+] Author and Article Information
F. A. Morrison, L. D. Reed

Department of Mechanical and Industrial Engineering, University of Illinois at Urbana-Champaign, Urbana, Ill.

J. Heat Transfer 96(4), 478-482 (Nov 01, 1974) (5 pages) doi:10.1115/1.3450232 History: Received February 28, 1974; Online August 11, 2010


Heat transfer from an acrosol aggregate composed of two touching spheres is investigated analytically. In the range of interest, the Knudsen number is small and the Peclet number negligible. The Nusselt number of a sphere is found to be reduced by the presence of a neighbor and by temperature jump. Expressions for the Nusselt number are obtained.

Copyright © 1974 by ASME
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