Numerical Study of Natural Convection Heat Transfer from a Horizontal Plate using Solid, Hollow and Hollow/Perforated Pin Fins | ||||
| Nile Journal of Basic Science | ||||
| Article 4, Volume 1, Issue 1, 2021, Page 35-48 PDF (1.16 MB) | ||||
| Document Type: Original Article | ||||
| DOI: 10.21608/njbs.2021.202757 | ||||
 View on SCiNiTO | ||||
| Author | ||||
A. M. Mousa 
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| Nile Higher Institute for Engineering and Technology, Mansoura, Egypt | ||||
| Abstract | ||||
| Natural convection heat transfer from circular solid, hollow and hollow/perforated pin fin arrays with different geometry is studied numerically using ANSYS 16.0. The geometric dependence of heat transfer from heat sinks of solid, hollow and hollow/perforated fins with staggered arrangement, involved on a fixed area heated base plate is discussed. To solve governing equations (mass, momentum and energy), a SIMPLE code is developed using control volume approach. The second order upwind technique is used. The results were performed for a range of Rayleigh number, 9.3×106> Ra> 1.63×107. It presented that the performance of the solid fin heat sink is higher than the hollow ones and Nu for the hollow/perforated fin heat sink is higher than that for the solid fin heat sink. It is also investigated that hollow/perforated fin array with inner-to-outer diameter ratio (Di/Do=1/2) and perforation diameter (dp=6 mm) is the best sample giving the maximum performance and less amount of weight compared to the corresponding solid ones. | ||||
| Keywords | ||||
| Perforated/hollow pin fin; Heat sink; Nusselt number; Computational Fluid Dynamics | ||||
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