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ISSN Online: 2377-424X

ISBN Print: 0-89116-299-2

International Heat Transfer Conference 7
September, 6-10, 1982, Munich, Germany

BUOYANCY EFFECT ON HEAT TRANSFER IN FORCED CHANNEL FLOWS

Get access (open in a dialog) DOI: 10.1615/IHTC7.4390
pages 343-362

摘要

The paper discusses the results of experimental and computational and theoretical studies of forced laminar and turbulent flows and heat transfer in channels under the conditions of an essential buoyancy effect. The main attention is given to upward and downward turbulent motion of liquid in heated vertical tubes.
The boundaries and character of thermogravitational forces effect on velocity and temperature distribution, friction resistance and local heat transfer are determined. Relationships for calculation of boundaries of the gravity force field effect are generalized.
In the case of a turbulent flow, the buoyancy effect on the averaged flow and on fluctuating motion are analyzed.