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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

UNSTEADY HEAT TRANSFER AND MIXING PROCESSES OF HEAT CARRIER IN COMPLEX-GEOMETRY CHANNELS

Get access (open in a dialog) DOI: 10.1615/IHTC9.2650
pages 345-350

Résumé

Consideration is made of a problem on unsteady heat transfer and mixing processes of heat carrier in turbulent flows in channels formed by oval helical and round spiral-finned tube bundles as well as in a flat channel at unilateral heat supply. Griterial relations are obtained to determine heat transfer and effective heat diffusion coefficients for different types of unsteadiness. These coefficients may be used to close a system of equations for unsteady thermal and hydraulic processes in the analysed channels. An algorithm to calculate unsteady temperature fields is constructed.