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RESEARCH PAPERS

Numerical Study of Flow and Heat Transfer for Circular Jet Impingement on the Bottom of a Cylindrical Cavity

[+] Author and Article Information
S. Gavali

Fujitsu America, Inc., 3055 Orchard Drive, San Jose, CA 95134

K. Karki

Innovative Research Inc., Minneapolis, MN 55414

S. Patankar

Department of Mechanical Engineering, University of Minnesota, Minneapolis, MN 55455

K. Miura

Fujitsu America, Inc., San Jose, CA 95134

J. Electron. Packag 115(3), 292-297 (Sep 01, 1993) (6 pages) doi:10.1115/1.2909331 History: Received April 10, 1992; Revised March 31, 1993; Online April 28, 2008

Abstract

A numerical study is presented for an axisymmetric laminar jet impingement on a confined disk, with the spent fluid being collected through an annual channel that is concentric with the nozzle. In this study, parametric variations were made of the dimensionless separation distance between the nozzle exit and the impingement surface, of the ratio of the diameter of the impingement surface to the nozzle diameter, and of the Reynolds number. The flow field is characterized by two recirculation zones, one adjacent to the nozzle exit and the other near the confining wall. The local heat transfer distribution on the impingement surface exhibits an off-axis maximum and a local minimum near the confining wall. The nozzle separation distance has an effect on surface heat transfer only for configurations with closet confinement. The thermal boundary condition on the impingement surface is found to have little effect on the total heat transfer.

Copyright © 1993 by The American Society of Mechanical Engineers
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