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<p>Cooling electronic devises has a significant impact on improving efficiency and increasing the productivity of these devices. Heat sinks are a suitable proposal for dissipating excess heat and increasing the efficiency of electrical devices. In this article, 5 configurations for using fins are proposed, and the entropy generation analysis is examined in Reynolds number from 100 to 500. The investigations were carried out using the finite element method and COMSOL Multiphysics software. Results show that case 4 provides the best cooling and the lowest amount of entropy generation in this work. In all Re, best cooling has been achieved by case 4, so that at Re 100, the <i>N</i><sub>a</sub> in case 4 has decreased by 35.42%, 15.68%, 8.08%, and 9.11% compared to the base case, case 1, case 2, and case 3. With the aim of increasing the efficiency of the heat sink, in the better case (case 4), a ternary hybrid nanofluid based on Al<sub>2</sub>O<sub>3</sub>–Go–ZnO nanoparticles was added to pure water at a volume fraction of 0.03, 0.05, and 0.07, which resulted in an increase in the entropy caused by the fluid flow, but the entropy generation of the entire system was reduced and better cooling was achieved.</p>

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Investigation of geometric changes and ternary hybrid nanofluids on entropy generation in mini-channel heat sink: a numerical study

  • 期刊论文

  • 发表日期：

    2025年8月12日

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  • Joy Djuansjah,
  • Ihab Omar,
  • Husam Rajab,
  • Aman Sharma,
  • Ashraf Abed Hussein,
  • Narinderjit Singh Sawaran Singh,
  • Khalil Hajlaoui,
  • Nimesh Raj

摘要

Cooling electronic devises has a significant impact on improving efficiency and increasing the productivity of these devices. Heat sinks are a suitable proposal for dissipating excess heat and increasing the efficiency of electrical devices. In this article, 5 configurations for using fins are proposed, and the entropy generation analysis is examined in Reynolds number from 100 to 500. The investigations were carried out using the finite element method and COMSOL Multiphysics software. Results show that case 4 provides the best cooling and the lowest amount of entropy generation in this work. In all Re, best cooling has been achieved by case 4, so that at Re 100, the Na in case 4 has decreased by 35.42%, 15.68%, 8.08%, and 9.11% compared to the base case, case 1, case 2, and case 3. With the aim of increasing the efficiency of the heat sink, in the better case (case 4), a ternary hybrid nanofluid based on Al2O3–Go–ZnO nanoparticles was added to pure water at a volume fraction of 0.03, 0.05, and 0.07, which resulted in an increase in the entropy caused by the fluid flow, but the entropy generation of the entire system was reduced and better cooling was achieved.