Heat Transfer Enhancement in Turbulent Flows by Blocked Surfaces

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In this study, the heat transfer analyses over flat and blocked surfaces were carried out in turbulent flow under the influence of the block height. A constant-temperature hot wire anemometer was used to the velocity and turbulent intensity measurements, while temperature values were measured by copper-constantan thermocouples. The average Stanton numbers for block heights of 15 and 25 mm were higher than those of flat surface by %38 and %84, respectively. The results showed that the presence of the blocks increased the heat transfer and the enhancement rose with block heights


Blocked surface, Turbulent flow, Heat transfer enhancement

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Makale 19.06.2012 tarihinde alınmış, 19.11.2012 tarihinde düzeltilmiş, 21.11.2012 tarihinde kabul edilmiştir.

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