Heat Transfer Enhancement in Turbulent Flows by Blocked Surfaces

Onur YEMENİCİ, Z. Abidin FIRATOĞLU
1.200 376

Abstract


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

Keywords


Blocked surface, Turbulent flow, Heat transfer enhancement

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References


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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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