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RESEARCH PAPERS: Jets, Wakes, and Impingement

Predictions of Turbulent Heat Transfer in an Axisymmetric Jet Impinging on a Heated Pedestal

[+] Author and Article Information
S. Parneix, M. Behnia

Center for Turbulence Research, Stanford University, Stanford, CA 94305-3030

P. A. Durbin

Mechanical Engineering Department, Stanford University, Stanford, CA 94305-3030

J. Heat Transfer 121(1), 43-49 (Feb 01, 1999) (7 pages) doi:10.1115/1.2825964 History: Received November 12, 1996; Revised January 16, 1998; Online December 05, 2007

Abstract

Cooling or heating of a flat plate by an impinging jet, due to its many applications, has been widely studied. Recent experimental data concerning more complex geometries has become available. In this study, the cooling of a heated pedestal mounted on a flat plate, a configuration which is closer to the one met in some engineering applications (e.g., cooling of electronic components), has been numerically simulated. The normal velocity relaxation turbulence model (V2F model) in an axisymmetric geometry has been adopted. Results have been obtained for a range of jet Reynolds numbers and jet-to-pedestal distances. Comparison of the predicted heat transfer coefficient with experiments has shown a very good agreement. For comparison, results have also been obtained with the widely used κ – ε turbulence model and the agreement with the data is poor.

Copyright © 1999 by The American Society of Mechanical Engineers
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