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Comprehensive examination of topologically optimized thermo-fluid heat sinks

Author

Listed:
  • Waelveerakup, Sorravit
  • Thanomthong, Kasidith
  • Tantivimonkajorn, Punnapop
  • Wanittansirichok, Vichapol
  • Mongkholphan, Kanich
  • Sakamatapan, Kittipong
  • Promoppatum, Patcharapit
  • Wongwises, Somchai

Abstract

This study investigates the thermal performance of topologically optimized heat sinks. The primary aims are to conduct a comprehensive parametric study, compare thermal outputs with the benchmark model, and validate numerical simulations through experimental testing. Multi-objective topology optimization is formulated based on thermal compliance and power dissipation. Selected optimized models were built and tested. The parametric study revealed promising design variables, leading to numerical convergence with interconnected flow paths. The promising variables were found under weighted thermal compliances (wh) between 0.3 and 0.9 and targeted liquid fractions (θFV) between 0.5 and 0.8. Additionally, at low operating pressures, for example, at 0.01 kPa, the temperature difference between optimized and benchmark models could be as much as 30 °C. Nonetheless, the temperature difference between both models became smaller at higher operating pressures. Furthermore, the comparison of temperature measurements, pressure drops, and thermal imaging showed reasonable agreement between experimental and numerical results. Additionally, the effect of design variables on thermal performance was confirmed through experiments. The heat sink with higher wh exhibited a lower temperature than that of the model with lower wh. In summary, this research highlights the crucial role of design variables in achieving a balance between temperature and pressure drop.

Suggested Citation

  • Waelveerakup, Sorravit & Thanomthong, Kasidith & Tantivimonkajorn, Punnapop & Wanittansirichok, Vichapol & Mongkholphan, Kanich & Sakamatapan, Kittipong & Promoppatum, Patcharapit & Wongwises, Somchai, 2024. "Comprehensive examination of topologically optimized thermo-fluid heat sinks," Energy, Elsevier, vol. 298(C).
  • Handle: RePEc:eee:energy:v:298:y:2024:i:c:s036054422401137x
    DOI: 10.1016/j.energy.2024.131364
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    References listed on IDEAS

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    1. Fawaz, Ahmad & Hua, Yuchao & Le Corre, Steven & Fan, Yilin & Luo, Lingai, 2022. "Topology optimization of heat exchangers: A review," Energy, Elsevier, vol. 252(C).
    2. He, Ziqiang & Yan, Yunfei & Zhang, Zhien, 2021. "Thermal management and temperature uniformity enhancement of electronic devices by micro heat sinks: A review," Energy, Elsevier, vol. 216(C).
    3. Xia, Yang & Chen, Li & Luo, Jiwang & Tao, Wenquan, 2023. "Numerical investigation of microchannel heat sinks with different inlets and outlets based on topology optimization," Applied Energy, Elsevier, vol. 330(PA).
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