An Experimental Investigation of Heat Transfer Enhancement by Pulsating Laminar Flow in a Triangular Grooved Channel

Abstract:

Heat transfer enhancement by pulsating flow in a triangular grooved channel has been experimentally investigated. Effects of Reynolds number Re, Strouhal number St, pulsation amplitude A on the heat transfer enhancement were studied. The experimental results show that, the pulsating flow can significantly enhance heat transfer compared to the steady flow case, for instance, an enhancement of 115% is achieved at Re=400, A=0.5 and St=0.3. There exists an optimal Strouhal number corresponding to the maximum heat transfer enhancement factor. The heat transfer enhancement factor increases with the increase of Reynolds number and pulsation amplitude.

• Periodical: Advanced Materials Research (Volumes 516-517)
• Pages: 249-252
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.516-517.249
• Online since: May 2012
• Authors: Bing Chang Yang, Dong Xu Jin
• Keywords: Experimental Investigation, Heat Transfer Enhancement, Pulsating Flow, Triangular Grooved Channel

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