International Journal of Innovation and Applied Studies
ISSN: 2028-9324     CODEN: IJIABO     OCLC Number: 828807274     ZDB-ID: 2703985-7
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An approach to optimal fin diameter based on entropy minimization

Volume 2, Issue 4, April 2013, Pages 518–524

 An approach to optimal fin diameter based on entropy minimization

Masoud Asadi1 and Nasrin Dindar Mehrabani2

1 Department of Mechanical Engineering, Azad Islamic University Science and Research branch, Tehran, Iran
2 Department of Mathematics & Computer Science, Amir Kabir University of Technology, Tehran, Iran

Original language: English

Received 7 February 2013

Copyright © 2013 ISSR Journals. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


Pin fin geometries provide a large surface area of heat transfer and reduce the thermal resistance of the package. One of the important features of this type of fins is that they often take less space and contribute less to the weight and cost of the product. Pin fin arrays are used widely in many applications such as gas turbine or electronic circuits cooling, where pin fin geometries use due to their low cost of manufacturing and easy installing. In gas turbine application heat transfer from the blade to the coolant air can be increased by installing pin fins. In fact, Pin fin arrays increase heat transfer by increasing the flow turbulence and surface area of the airfoil exposed to the coolant. The overall performance of a heat exchanger with pin-fin typically depends on a number of parameters including the fin diameter, dimensions of the baseplate and pin-fins, thermal joint resistance and location heat sources. These parameters have an impact on the optimal design of a heat exchanger. Fin diameter is a key parameter to determine overall heat exchanger efficiency and entropy generation. In this paper, our objective is introducing an Equation to calculate optimal fin diameter based on minimizing entropy generation.

Author Keywords: Pin fin, Entropy minimization, Pressure drop, Optimal diameter.

How to Cite this Article

Masoud Asadi and Nasrin Dindar Mehrabani, “An approach to optimal fin diameter based on entropy minimization,” International Journal of Innovation and Applied Studies, vol. 2, no. 4, pp. 518–524, April 2013.