Experimental Study of the Flow in a Compact Heat Exchanger Channel With Embossed-Type Vortex Generators
Langue
en
Article de revue
Ce document a été publié dans
Journal of Fluids Engineering. 2003, vol. 125, n° 4, p. 701-709
American Society of Mechanical Engineers
Résumé en anglais
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 ...Lire la suite >
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 roll-up 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.< Réduire
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