Abstract The heat transfer coefficient is experimentally measured around a cylinder heated by ohmic effect. The heating technique approximates a uniform heat flux on the cylinder’s wall. The model is placed downstream of different perturbing grids in a wind tunnel. The Reynolds number based on the cylinder’s diameter varies between 10820 and 48830. At large distances from the grids, the heat transfer is significantly enhanced by using a fractal and a single square grid designed to increase turbulence intensity with a low blockage ratio. Significant differences exist between the heat transfer profiles measured in the production and in the decay region in positions where turbulence intensity is the same.
Heat Transfer Enhancement by Grid-Generated Turbulence for a Cylinder in Crossflow
Proceedings of the 5th International Conference on Jets, Wakes and Separated Flows (ICJWSF2015) ; 2 ; 125-132
Springer Proceedings in Physics ; 185 , 2
2016-01-01
8 pages
Aufsatz/Kapitel (Buch)
Elektronische Ressource
Englisch
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