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ISSN Online: 2377-424X

ISBN Print: 0-89116-130-9

International Heat Transfer Conference 6
August, 7-11, 1978, Toronto, Canada

TEMPERATURE DISTRIBUTION AND BUOYANCY EFFECTS IN A RECIRCULATION FLOW PRODUCED BY A ROUND JET IN A DEAD-END VESSEL

Get access (open in a dialog) DOI: 10.1615/IHTC6.3050
pages 55-60

Abstract

Experiments have been performed on an axisymmetric recirculation flow driven by a steady vertical submerged jet of water confined in a cylindrical dead-end vessel. The purpose has been to provide a basic set of data for checking elliptic-type predictors. The part of the work reported on here deals especially with aspects of thermal transport.

The jet runs cold or warm relative to the wall. Temperature distributions in the jet and recirculation regions are measured by means of a fine traversing thermocouple.

Effects are discussed of the Reynolds number, the distance between the nozzle and the dead-end cover, and the jet temperature polarity. Locations of instabilities discovered by the temperature traverse are mapped. Influences of buoyancy are indicated and delimited. Beyond a development length, the centerline excess temperature ratio is generally found to vary inversely with the 0.048 power of the distance from the nozzle. A surface coefficient of heat transfer at the lateral wall is correlated with the principal parameters.