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RESEARCH PAPERS: Heat Transfer Enhancement

Direct Numerical Simulation of Three-Dimensional Flow and Augmented Heat Transfer in a Grooved Channel

[+] Author and Article Information
M. Greiner, G. J. Spencer

Mechanical Engineering Department, University of Nevada, Reno, NV 89557

P. F. Fischer

Division of Applied Mechanics, Brown University, Providence, RI 02912

J. Heat Transfer 120(3), 717-723 (Aug 01, 1998) (7 pages) doi:10.1115/1.2824341 History: Received October 16, 1996; Revised April 06, 1998; Online December 05, 2007

Abstract

Direct numerical simulations of three-dimensional flow and augmented convective heat transfer in a transversely grooved channel are presented for the Reynolds number range 140 < Re < 2000. These calculations employ the spectral element technique. Multiple flow transitions are documented as the Reynolds number increases, from steady two-dimensional flow through broad-banded unsteady three-dimensional mixing. Three-dimensional simulations correctly predict the Reynolds-number-independent friction factor behavior of this flow and quantify its heat transfer to within 16 percent of measured values. Two-dimensional simulations, however, incorrectly predict laminar-like friction factor and heat transfer behaviors.

Copyright © 1998 by The American Society of Mechanical Engineers
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