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RESEARCH PAPERS

Heat Transfer Characteristics for Inline and Staggered Arrays of Circular Jets with Crossflow of Spent Air

[+] Author and Article Information
D. E. Metzger, L. W. Florschuetz, D. I. Takeuchi, R. D. Behee, R. A. Berry

Department of Mechanical Engineering, Arizona State University, Tempe, Ariz. 85281

J. Heat Transfer 101(3), 526-531 (Aug 01, 1979) (6 pages) doi:10.1115/1.3451022 History: Received July 27, 1978; Online August 11, 2010

Abstract

Heat transfer characteristics were measured for two-dimensional arrays of jets impinging on a surface parallel to the jet orifice plate. The impinging flow was constrained to exit in a single direction along the channel formed by the jet plate and the heat transfer surface. Both mean Nusselt numbers and streamwise Nusselt number profiles are presented as a function of Reynolds number and geometric parameters. The results show that significant periodic variations occur in the streamwise Nusselt number profiles, persisting downstream for at least ten rows of jet holes. Both channel height and hole spacing can have a significant effect on the streamwise profiles, smoothed across the periodic variations. Where significant differences exist, inline hole patterns provide better heat transfer than staggered ones, particularly downstream. These and other effects of the geometric parameters are presented and discussed.

Copyright © 1979 by ASME
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