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.
Experimental Study of the Flow in a Compact Heat Exchanger Channel With Embossed-Type Vortex Generators
Contributed by the Fluids Engineering Division for publication in the JOURNAL OF FLUIDS ENGINEERING. Manuscript received by the Fluids Engineering Division Apr. 4, 2002, revised manuscript received Mar. 3, 2003. Associate Editor: M. V. O¨tu¨gen.
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Dupont , F., Gabillet , C., and Bot, P. (August 27, 2003). "Experimental Study of the Flow in a Compact Heat Exchanger Channel With Embossed-Type Vortex Generators ." ASME. J. Fluids Eng. July 2003; 125(4): 701–709. https://doi.org/10.1115/1.1595675
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