International Research Journal of Innovations in Engineering and Technology - IRJIET International Open Access, Monthly, Peer Reviewed, Reputed Journal ISSN (online): 2581-3048

Impact Factor (2025): 6.9

DOI Prefix: 10.47001/IRJIET

Hydrothermal Analysis of Archimedean Spiral Channel Heat Sink for CPU Cooling

Abstract

The rapid improvement of engineering modeling is supported by the improvement of parallel GPU and CPU computational capacities. However, due to space limitations, the improvement of the computational capacities of GPU and CPU imposes challenges in the cooling process. The liquid cooling method has attracted more interest as an effective heat dissipation method. In this work, a new channel configuration is introduced using the Archimedean spiral curve to generate the Archimedean spiral channel configuration. The conjugate heat sink model was created to have four different domains: liquid coolant (water), Cold plate (copper), glue layer (ethoxy), and CPU (alumina). The effect of turbulence was incorporated by varying the flow rate at a constant water inlet temperature of 25oCto cover a range of Reynolds numbers (Re) from 3000 to 15000. The Shear Stress Transport (k-w SST) was the used turbulent model for a better capturing of the viscous, high-frequency flow fluctuation near-wall region. Input power of 450 W was subjected to the bottom surface of the CPU. The results showed that the Reynolds number has a decisive impact on controlling the CPU temperature. As higher Re decreased the average temperature developed within the CPU and increased the pressure drop at an exponential rate. Darcy-Weisbach equation confirmed these findings for internal flow when the pressure drop depends on the squared average velocity. The hydrothermal performance of the Archimedean spiral channel configuration rapidly decreased with the Re. Similar to the velocity profile, the turbulent kinetic energy is generated at higher rate next to the channels’ outer wall compared to the inner wall.

Country : Iraq

1 Hala M. Rashad2 Younis M. Najim3 Hatem Hasan Ismaeel

  1. Department of Energy Engineering, Technical College of Engineering, Duhok Polytechnic University, Duhok, Iraq
  2. Department of Mechanical Engineering, College of Engineering, University of Mosul- 42002, Iraq
  3. Department of Energy Engineering, Technical College of Engineering, Duhok Polytechnic University, Duhok, Iraq

IRJIET, Volume 6, Issue 8, August 2022 pp. 61-71

doi.org/10.47001/IRJIET/2022.608009

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