Detailed Measurements of Local Heat Transfer Coefficient and Adiabatic Wall Temperature Beneath an Array of Impinging Jets

[+] Author and Article Information
K. W. Van Treuren, Z. Wang, P. T. Ireland, T. V. Jones

Department of Engineering Science, University of Oxford, Oxford, United Kingdom

J. Turbomach 116(3), 369-374 (Jul 01, 1994) (6 pages) doi:10.1115/1.2929423 History: Received March 03, 1993; Online June 09, 2008


A transient method of measuring the local heat transfer under an array of impinging jets has been developed. The use of a temperature-sensitive coating consisting of three encapsulated thermochromic liquid crystal materials has allowed the calculation of both the local adiabatic wall temperature and the local heat transfer coefficient over the complete surface of the target plate. The influence of the temperature of the plate through which the impingement gas flows on the target plate heat transfer has been quantified. Results are presented for a single in-line array configuration over a range of jet Reynolds numbers.

Copyright © 1994 by The American Society of Mechanical Engineers
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