Numerical Simulation of Natural Convection Heat Transfer using Solid and Hollow/Perforated Pin Fin Heat Sinks.

Authors

Ahmed Mousa, Nile Higher Institute for Engineering and Technology, CO 35516, EgyptFollow
Ahmed Hegazi, Mechanical Engineering Department, University of Mansoura, CO 35516, EgyptFollow
Gamal Sultan, a Professor at the Department of Mechanical Power Engineering, Mansoura University, Mansoura, EgyptFollow

Corresponding Author

Mousa, Ahmed

Subject Area

Mechanical Power Engineering

Article Type

Original Study

Abstract

Free convection heat transfer from circular solid and hollow/perforated pin fin heat sinks with different geometry and heat flux is numericallystudied using FLUENT ANSYS 16.0. The geometric dependence of heat transfers from heat sinks of solid and hollow/perforated fins with staggered pattern, attached on a fixed area heated base plate is discussed. A SIMPLE code is developed using control volume approach to solve governing equations (mass, momentum and energy), and the second order upwind technique is used. The results were carried out for a range of Rayleigh number, 9.3×106> Ra> 1.63×107. It showed that the performance of 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 < /sub> < /sub>=6 mm) is the best sample giving the maximum performance and less amount of weight compared to the corresponding solid ones

Keywords

Computational Fluid Dynamics; Heat sink; Natural convection; Nusselt number; Perforated/hollowpin fin

Recommended Citation

Mousa, Ahmed; Hegazi, Ahmed; and Sultan, Gamal (2020) "Numerical Simulation of Natural Convection Heat Transfer using Solid and Hollow/Perforated Pin Fin Heat Sinks.," Mansoura Engineering Journal: Vol. 44 : Iss. 1 , Article 6.
Available at: https://doi.org/10.21608/bfemu.2020.95036