Cover
Vol. 20 No. 1 (2020)

Published: February 29, 2020

Pages: 37-43

Original Article

Thermal Performance Study of Parallel and Radial Divergence Microchannel Arrangement Using Numerical Method

Sahib Shihab Ahmed 1 Abdul Muhsin A. Rageb 2
1 Department of Mechanical Engineering, College of Engineering, University of Kufa, Najaf, Iraq
2 Department of Mechanical Engineering, College of Engineering, University of Basrah, Basrah, Iraq
History
  • Received: December 1, 2019
  • Revised: December 18, 2019
  • Accepted: December 22, 2019
  • Available Online: February 2, 2020
DOI

https://doi.org/10.33971/bjes.20.1.7

Abstract

This study presents three-dimensional numerical simulations of single-phase laminar flow and forced convection heat transfer of water in a five-layer microchannel heat sink with two channel configurations: radial arrangement and parallel divergence channels. The thermal performance and pressure drop characteristics were evaluated under identical operating conditions, including a constant mass flow rate of 3.925 × 10⁻⁴ kg/s and a uniform heat flux of 90 W/cm². The results indicated that the radial microchannel configuration significantly enhanced both hydrodynamic and thermal performance compared with the parallel divergence design. Specifically, the pressure drop was reduced by approximately 32.5%, the overall performance index increased by about 1.5, and improved temperature uniformity across the heat sink was achieved. These findings demonstrate the superiority of the radial microchannel arrangement for high-heat-flux thermal management applications.

Keywords

References

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