Technical Briefs

Simulation of Thermal Fluid Flow Transport in a Channel Containing Slot-Perforated Flat Plates

[+] Author and Article Information
Shuichi Torii

Department of Mechanical System Engineering, Kumamoto University, 2-39-1 Kurokami, Kumamoto 860-8550, Japantorii@mech.kumamoto-u.ac.jp

Wen-Jei Yang

Department of Mechanical Engineering, University of Michigan, Ann Arbor, MI 48109wjyang@engin.umich.edu

J. Heat Transfer 130(11), 114506 (Sep 04, 2008) (3 pages) doi:10.1115/1.2970077 History: Received September 08, 2007; Revised April 04, 2008; Published September 04, 2008

A numerical study is performed to investigate unsteady, two-dimensional, incompressible laminar flow over both sides of a slot-perforated flat surface in a pulsating channel flow. Consideration is given to the effects of the pulsating Strouhal number fSr, the Reynolds number Re, and the blockage factor, i.e., the ratio of plate thickness, δ, to channel width, W, on the heat-transfer performance and the velocity and thermal fields. It is found from the study that (i) time-averaged Nusselt number at the rear plate is amplified with Re, (ii) in contrast, the corresponding performance is attenuated with an increase in the blockage factor, whose effect becomes larger in the lower region of the Reynolds number, i.e., Re=100, and (iii) enhancement of the Nusselt number causes an increase in fSr, whose effect becomes minor near in the region of Re=100.

Copyright © 2008 by American Society of Mechanical Engineers
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Grahic Jump Location
Figure 1

Timewise variation of Nusselt numbers at the rear plate for Re=120

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Figure 2

Timewise variation of Nusselt numbers at the rear plate for Re=120

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Figure 3

Time-averaged Nusselt numbers for different blockage factors, fSr=1

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Figure 4

Time-averaged Nusselt numbers for different pulsating Strouhal numbers, fSr, for kq=0.1



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