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ISSN Online: 2377-424X

ISBN Print: 0-89116-909-1

International Heat Transfer Conference 9
August, 19-24, 1990 , Jerusalem, Israel

THE ANALYSIS OF EXTENDED SURFACES WITH A VARIABLE HEAT TRANSFER COEFFICIENT

Get access (open in a dialog) DOI: 10.1615/IHTC9.1400
pages 117-121

Résumé

The recently developed paramaterization of the thermal transmission matrix to provide a linear transformation for temperature excess and heat flow between tip and base conditions of a single fin is used to efficiently solve the problem encountered with a variable heat transfer coefficient along the faces of the fin. The cascade algorithm for the combination of subfins attached end-to-end is used to demonstrate, in a computationally efficient procedure, that the problem of the variation of heat transfer coefficient condition can be approximated to any required accuracy by the use of subfins, each with a constant local heat transfer coefficient. The accuracy will depend only on the number of subfins employed. The proposed method is compared to an existing analytical solution and further illustrated for a more practical problem where the fin width is also allowed to vary.