Heat Transfer and Friction Characteristics of Perforated Fin with a Longitudinal Slot under Forced Convection |
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Authors: | Kuldeep Rawat Anil K. Patil |
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Affiliation: | Department of Mechanical Engineering, D. I. T. University, Dehradun, Uttarakhand, India |
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Abstract: | Extended surfaces are used in a variety of heat transfer applications owing to their ability in reducing the convection resistance by exposing a large surface area to the surrounding fluid. Surface modification in the form of perforations is a passive method of increasing the heat transfer rates with the additional benefit of weight reduction. This work deals with numerical investigation of heat transfer and friction from a perforated fin (with and without slot) subjected to forced convection. The perforated fin with slot has been found to have a maximum enhancement in heat transfer with the simultaneous increase in frictional losses versus that of a solid fin. Further, the perforated fin without slot has been able to transfer heat at a relatively higher rate with a considerable reduction in energy loss due to friction in comparison to a solid fin. |
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Keywords: | perforated fin heat transfer friction Reynolds number effectiveness |
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