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RESEARCH PAPERS: Heat Transfer Enhancement

Local Flow and Heat Transfer Behavior in Convex-Louver Fin Arrays

[+] Author and Article Information
N. C. DeJong

Baylor University, Waco, TX 76798

A. M. Jacobi

Department of Mechanical and Industrial Engineering, University of Illinois, Urbana, IL 61801

J. Heat Transfer 121(1), 136-141 (Feb 01, 1999) (6 pages) doi:10.1115/1.2825926 History: Received November 25, 1997; Revised September 08, 1998; Online December 05, 2007

Abstract

Local and surface-averaged measurements of convection coefficients and core pressure-drop data are provided for an array of convex-louver fins. For a Reynolds number range from 200 to 5400, these data are complemented with a flow visualization study and contrasted with new measurements from a similar offset-strip geometry. The results clarify the effects of boundary layer restarting, shear-layer unsteadiness, spanwise vortices, and separation, reattachment, and recirculation on heat transfer in the convex-louver geometry.

Copyright © 1999 by The American Society of Mechanical Engineers
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