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RESEARCH PAPERS

Numerical Study of Developing Flow and Heat Transfer in a Wavy Passage

[+] Author and Article Information
K. Stone, S. P. Vanka

Department of Mechanical and Industrial Engineering, University of Illinois at Urbana-Champaign, 1206 W Green Street, Urbana, IL 61801

J. Fluids Eng 121(4), 713-719 (Dec 01, 1999) (7 pages) doi:10.1115/1.2823528 History: Received April 03, 1998; Revised June 22, 1999; Online December 04, 2007

Abstract

Developing flow and heat transfer in a wavy passage are studied using a numerical scheme that solves the two-dimensional unsteady flow and energy equations. Calculations are presented for a wavy channel consisting of 14 waves. Time-dependent simulations have been performed for several Reynolds numbers. At low Reynolds numbers, the flow is steady in the complete channel. As the Reynolds number is progressively increased, the flow becomes unsteady. As a result of the unsteadiness, there is increased mixing between the core and the wall fluids, thereby increasing the heat transfer rate. With further increase in Reynolds number, the flow becomes unsteady at a much earlier spatial location.

Copyright © 1999 by The American Society of Mechanical Engineers
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