Numerical Optimization of a CPU Heat Sink Geometry

Authors

  • Md. Zavid Iqbal Bangalee Department of Applied Mathematics, University of Dhaka, Dhaka-1000, Bangladesh
  • Md. Mizanur Rahman Research group of fluid flow modeling and simulation, Department Applied Mathematics, University of Dhaka, Bangladesh
  • Khairy Zaimi Centre of Excellence for Social Innovation & Sustainability (CoESIS), Universiti Malaysia Perlis, Perlis, Malaysia
  • Mohammad Ferdows Research group of fluid flow modeling and simulation, Department Applied Mathematics, University of Dhaka, Bangladesh

DOI:

https://doi.org/10.37934/cfdl.13.3.115

Keywords:

Heat sink, Fin, Baseplate, Turbulence model

Abstract

During its operation CPU dissipates undesirable heat. Therefore, heat sink is very essential in modern computing system to absorb extra heat dissipated by the CPU. Forced convection air cooling is common approach. In the present work, a steady-state convective heat transfer process is analyzed for CPU cooling.  A rectangular fin heat sink equipped in a computer chassis is numerically investigated and simulated using the software ANSYS CFX. A two-equation based turbulence model is chosen to capture the turbulence of the flow inside the domain. The overall dimension of the heat sink is optimized for three different parameters of the heat sink such as fin quantity, fin height and baseplate thickness. An optimum fin quantity, fin height and baseplate thickness are found, and, respectively. Two different orientations of fins are also compared. Better thermal performance is achieved when the fin channel is perpendicular to the surface parallel to the outlet. The average temperature of the heat sink is found. It is also predicted that the heat sink studied here is capable to keep the CPU temperature underthat is reasonably acceptable.

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Published

2021-03-23

How to Cite

Bangalee, M. Z. I., Rahman, M. M., Zaimi, K. ., & Ferdows, M. (2021). Numerical Optimization of a CPU Heat Sink Geometry. CFD Letters, 13(3), 1–15. https://doi.org/10.37934/cfdl.13.3.115
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