Experimental Study of the Flow in a Compact Heat Exchanger Channel With Embossed-Type Vortex Generators-Reference-Cited by-同舟云学术

Experimental Study of the Flow in a Compact Heat Exchanger Channel With Embossed-Type Vortex Generators

Published:2003-07-01 Issue:4 Volume:125 Page:701-709
ISSN:0098-2202
Container-title:Journal of Fluids Engineering
language:en
Short-container-title:

Author:

Dupont F.¹,Gabillet C.¹,Bot P.¹

Affiliation:

1. Institut de Recherche de l’Ecole-Navale, F29240 Brest-Naval, France

Abstract

The isothermal flow in a model channel of plate-fin heat exchanger with periodically arranged embossed-like vortex generators is investigated. Velocity measurements are performed by LDA in the transitional regime (Reynolds number from 1000 up to 5000). Strong longitudinal vortices are observed downstream of each generator. The vortex rollup process is highlighted by the evolution of the velocity vector field in the cross section of the flow. The modifications of the vortex characteristics after successively encountered generators are investigated. This work shows most of the flow features which are known to produce heat transfer enhancement, and shows that these smooth shaped vortex generators are very promising for enhanced heat exchangers.

Publisher

ASME International

Subject

Mechanical Engineering

Link

http://asmedigitalcollection.asme.org/fluidsengineering/article-pdf/125/4/701/5621643/701_1.pdf

Reference18 articles.

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2. Fiebig, M. , 1995, “Vortex Generators for Compact Heat Exchangers,” Journal of Enhanced Heat Transfer,2(1–2), pp. 43–61.

3. Shabaka, I. M. M. A., Metha, R. D., and Bradshaw, P., 1985, “Longitudinal Vortices Embedded in Turbulent Boundary Layers. Part 1 Single Vortex,” J. Fluid Mech., 155, pp. 37–57.

4. Mehta, R. D., and Bradshaw, P., 1988, “Longitudinal Vortices Embedded in Turbulent Boundary Layers. Part 2, Vortex Pair With Common Flow Upwards,” J. Fluid Mech., 188, pp. 529–546.

5. Gentry, M. C., and Jacobi, A. M., 1996, “Heat Transfer Enhancement by Delta-Wing Vortex Generators on a Flat Plate: Vortex Interactions With the Boundary Layer,” Exp. Therm. Fluid Sci., 14, pp. 231–642.

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