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ISSN Online: 2377-424X

ISBN Print: 0-89116-559-2

International Heat Transfer Conference 8
August, 17-22, 1986, San Francisco, USA

AN EXPERIMENTAL STUDY OF TWO-DIMENSIONAL JET-IMPINGEMENT HEAT/MASS TRANSFER IN A CONFINED CROSS-FLOW

Get access (open in a dialog) DOI: 10.1615/IHTC8.2120
pages 1225-1230

Resumo

A two-dimensional jet discharging into a confined cross-flow has been studied in order to obtain data that can aid the design of slot jet-impingement systems, particularly metal reheating furnaces. The exhaust flow from upstream jets is usually removed from one end of such systems, thereby creating the cross-flow. Flow and heat transfer measurements are reported for a single air jet injected into an essentially uniform cross-flowing airstream, using a small-scale isothermal or 'cold-flow' experimental model. The variation in the local heat transfer coefficient beneath the jet was derived from mass transfer measurements, of the sublimation of a naphthalene thin-film from the target surface, via the Chilton-Colburn analogy. The corresponding flow field was evaluated using a smoke tracer technique and five-hole pitot-tube traverses.