TY - JOUR
T1 - Thermohydraulic performance optimization of integrated porous pin fins in microchannel heat sink using shape optimization coupled with genetic algorithm
AU - Zhang, Hang ye
AU - Ma, Zhe hui
AU - Chen, Xin ji
AU - Huang, Long
AU - Chen, Dong yu
AU - Qian, Jin yuan
N1 - Publisher Copyright:
© 2024 Elsevier Ltd
PY - 2025/2/15
Y1 - 2025/2/15
N2 - Micro porous heat sink (MPHS) with enhanced heat transfer performance faces higher pressure drop challenges than conventional heat sinks. Practical applications of MPHS are recently investigated focusing on basic structures. But explorations on complex structures and their performance enhancement are limited. Moreover, the heat conductivity along channel height direction needs further enhancement. To address the problems and extend porous fin designs, we propose a brand-new bionic integrated porous pin fin in MPHS. Procedures of shape optimization coupled with Non-dominated Sorting Genetic Algorithm (NSGA) are applied to the porous fin design. The objective is chosen as figure of merit (FOM) regarding integrated pin fin spacing, solid sub pin fin spacing, and porous zone diameter. This novel method in MPHS investigation helps to find the optimal geometric parameter combination and counter-intuitive design. Then, a detailed performance comparative analysis for the optimized structure is conducted. The results show improvement ratio ranges of FOM are 18.79 - 21.65%, 71.84 - 108.72%, and 212.7 - 231.5%, compared to non-optimized, partially-filled, and fully-filled structures, respectively. This work indicates that the innovative design attains significant energy efficiency improvement, and the novel method is feasible for comprehensive optimization.
AB - Micro porous heat sink (MPHS) with enhanced heat transfer performance faces higher pressure drop challenges than conventional heat sinks. Practical applications of MPHS are recently investigated focusing on basic structures. But explorations on complex structures and their performance enhancement are limited. Moreover, the heat conductivity along channel height direction needs further enhancement. To address the problems and extend porous fin designs, we propose a brand-new bionic integrated porous pin fin in MPHS. Procedures of shape optimization coupled with Non-dominated Sorting Genetic Algorithm (NSGA) are applied to the porous fin design. The objective is chosen as figure of merit (FOM) regarding integrated pin fin spacing, solid sub pin fin spacing, and porous zone diameter. This novel method in MPHS investigation helps to find the optimal geometric parameter combination and counter-intuitive design. Then, a detailed performance comparative analysis for the optimized structure is conducted. The results show improvement ratio ranges of FOM are 18.79 - 21.65%, 71.84 - 108.72%, and 212.7 - 231.5%, compared to non-optimized, partially-filled, and fully-filled structures, respectively. This work indicates that the innovative design attains significant energy efficiency improvement, and the novel method is feasible for comprehensive optimization.
KW - Figure of merit
KW - Heat transfer enhancement
KW - Micro porous heat sink
KW - Porous pin fin
KW - Thermohydraulic performance
UR - http://www.scopus.com/inward/record.url?scp=85211134670&partnerID=8YFLogxK
U2 - 10.1016/j.applthermaleng.2024.125120
DO - 10.1016/j.applthermaleng.2024.125120
M3 - Article
AN - SCOPUS:85211134670
SN - 1359-4311
VL - 261
JO - Applied Thermal Engineering
JF - Applied Thermal Engineering
M1 - 125120
ER -