Numerical Analysis on Natural Convection Heat Transfer of a Heat Sink with Cylindrical Pin Fin

Journal of Advanced Research in Fluid Mechanics and Thermal Sciences
Volume 2, No. 1, October 2014, Pages 13-22

Y. Z. Qin1, A. N. Darus1, N. A. Che Sidik1,*
1Faculty of Mechanical Engineering, Universiti Teknologi Malaysia, 81310 Skudai, Johor, Malaysia
*Corresponding author: azwadi@fkm.utm.my

KEYWORDS

Natural Convection, Cylindrical Pin Fin, Heat Sink, Porosity

ABSTRACT

As technology advancement progresses in this information age or commonly known as digital age, thermal management has equally improved to keep up with demands from the electronic sector. Hence, heat sink study has become more and more prominent. Natural convection holds advantages since it is maintenance free and has zero power consumption. The purpose of this research is to study the heat transfer performance of heat sink with parametric variations of number and height of pin fin at the temperatures of 308K, 323K, 338K, 353K and 368K. In addition, the effect of porosity ranging from 0.524 to 0.960 on thermal resistance was investigated as well. The study found that heat transfer coefficient increases as the temperature difference between heat sink and ambient increases. Thermal resistance decreases when the porosity increases until it reaches the minimum and subsequently increases. The optimum porosity shown in this study is around 88%.

CITE THIS ARTICLE

MLA
Qin, Y. Z., et al. “Numerical Analysis on Natural Convection Heat Transfer of a Heat Sink with Cylindrical Pin Fin.” Journal of Advanced Research in Fluid Mechanics and Thermal Sciences 2.1 (2014): 13-22.

APA
Qin, Y. Z., Darus, A. N., & Che Sidik, N. A. (2014). Numerical Analysis on Natural Convection Heat Transfer of a Heat Sink with Cylindrical Pin Fin. Journal of Advanced Research in Fluid Mechanics and Thermal Sciences, 2(1), 13-22.

Chicago
Qin, Y. Z., Darus, A. N., and Che Sidik, N. A. “Numerical Analysis on Natural Convection Heat Transfer of a Heat Sink with Cylindrical Pin Fin.” Journal of Advanced Research in Fluid Mechanics and Thermal Sciences 2, no. 1 (2014): 13-22.

Harvard
Qin, Y.Z., Darus, A.N. and Che Sidik, N.A., 2014. Numerical Analysis on Natural Convection Heat Transfer of a Heat Sink with Cylindrical Pin Fin. Journal of Advanced Research in Fluid Mechanics and Thermal Sciences, 2(1), pp.13-22.

Vancouver
Qin, YZ, Darus, AN, Che Sidik, NA. Numerical Analysis on Natural Convection Heat Transfer of a Heat Sink with Cylindrical Pin Fin. Journal of Advanced Research in Fluid Mechanics and Thermal Sciences. 2014;2(1):13-22.

REFERENCES

[1] P.H. Oosthuszen, D. Naylor, Introduction to Convective Heat Transfer Analysis, Singapore: McGraw Hill. 1999.
[2] D. Systemes, Convection Heat Coefficient, Retrieved on October http://help.solidworks.com/2012/English/SolidWorks/cworks/Convection_Heat_Coefficient.htm. 2012.
[3] Fluent 6.3 User’s Guide. (2006). Fluent 6.3 User’s Guide. Retrieved on December from http://cdlab2.fluid.tuwien.ac.at/LEHRE/TURB/Fluent, Inc/fluent6.3.26/help/html/ug/node1013.htm. 2012.
[4] R.T. Huang, W.J. Sheu, C.C. Wang, Orientation effect on natural convective performance of square pin fin heat sinks, International Journal of Heat and Mass Transfer 51 (2008) 2368-2376.
[5] F.P. Incropera, D.P. Dewitt, T.L. Bergman, A.S. Lavine, Foundations of Heat Transfer, (6th ed.). Asia: John Wiley & Sons. 2013.
[6] I. Kamarulzaman, Numerical analysis on thermal performance of staggered pin-fin assembly, Master Thesis, Universiti Teknologi Malaysia, Skudai. 2007.
[7] H.S. Kou, J.J. Lee, C.Y. Lai, Thermal analysis and optimum fin length of a heat sink, Heat Transfer Engineering 24 (2003) 18-29.
[8] S.V. Naidu, V.R. Dharma, B. GovindaRao, A. Sombabu, B. Sreenivasulu, Natural convection heat transfer from fin arrays-experimental and theoretical study on effect of inclination of base on heat transfer, ARPN Journal of Engineering and Applied Sciences 5 (2010) 7-15.
[9] D.A. Nield, A. Bejan, Convection in Porous Media, New York: Springer. 2006.
[10] D.Y. Shang, Free Convection Film Flows and Heat Transfer, New York: Springer Verlag. 2006.
[11] E.A.M. Elshafei, Natural convection heat transfer from a heat sink with hollow/perforated circular pin fins, Energy 35 (2010) 2870-2877.
[12] O.N. Sara, Performance analysis of rectangular ducts with staggered square pin fins, Energy Conversion and Management 44 (2003) 1787–1803.
[13] E.M. Sparrow, S.B. Vemuri, Orientation effects on natural convection/radiation heat transfer from pin-fin arrays, International Journal of Heat and Mass Transfer 29 (1986) 359-368.