文献类型：期刊文献

英文题名：Topology optimization of microchannel heat sinks for laminar flows of thermal-fluid

作者：Han, Haitao Han, Yeming Lin, Yu Wang, Chengmiao Korvink, Jan G. Deng, Yongbo

第一作者：Han, Haitao

通信作者：Korvink, JG[1];Deng, YB[1]

机构：[1]Guizhou Inst Technol, Sch Mech Engn, Guiyang 550003, Peoples R China;[2]Chinese Acad Sci, Changchun Inst Opt Fine Mech & Phys CIOMP, State Key Lab Appl Opt, Changchun 130033, Peoples R China;[3]Karlsruhe Inst Technol KIT, Inst Microstruct Technol IMT, Hermann von Helmholtzpl 1, D-76344 Eggenstein Leopoldshafen, Germany

第一机构：贵州理工学院机械工程学院

通信机构：corresponding author), Karlsruhe Inst Technol KIT, Inst Microstruct Technol IMT, Hermann von Helmholtzpl 1, D-76344 Eggenstein Leopoldshafen, Germany.

年份：2025

卷号：270

外文期刊名：APPLIED THERMAL ENGINEERING

收录：;EI(收录号：20251118052329);Scopus(收录号：2-s2.0-86000735680);WOS:【SCI-EXPANDED(收录号:WOS:001495093400001)】；

基金：This research was supported by National Natural Science Foundation of China (Grant No. 51875545) , Innovation Grant of Changchun Institute of Optics, Fine Mechanics and Physics (CIOMP) , CAS Project for Young Scientists in Basic Research of China (Grant No. YSBR-066) and Science and Technology Development Program of Jilin Province of China (Grant No. SKL202302020) , an EU2020 FET grant (TiSuMR, 737043) , the DFG under grant KO 1883/20-1 Metacoils, funding within their famework of the German Excellence Intitiative under grant EXC 2082 "3D Matter Made to Order", and from the VirtMat initiative "Virtual Materials Design".

语种：英文

外文关键词：Topology optimization; Thermal-fluid coupling problem; Laminar flow; Microchannel; Heat sinks

摘要：In practical applications, the optimized design of microchannel heat exchangers is a result of a proper balance between thermal and hydraulic performances. This suggests that material properties and flow conditions determine the upper limit of the performance of microchannel heat exchangers. Exploring the influence of the material properties and flow conditions on the microchannel heat exchangers is beneficial for establishing more cost-effective solutions in the design process of microchannel heat exchangers, i.e., finding the optimal combination of materials, flow conditions, and microchannel structures. To explore the impact of physical conditions on the thermal performance of an optimized microchannel structure, this study innovatively proposes a singleobjective topology optimization method constrained by relaxed fluid energy dissipation. The two-dimensional and three-dimensional topology optimization models were systematically analyzed. The numerical results indicate that the fluid energy dissipation constraint is equivalent to the pressure drop constraint. The performance of microchannel structures greatly varies with physical conditions and exhibits similar regularities in twodimensional and three-dimensional cases. An increase in Reynolds number, an increase in Peclet numbers, a synergistic increase in both numbers, as well as an increase in solid-liquid heat conduction ratio can enhance thermal indicators. In two-dimensional problems, the maximum reductions in objective function are 79.37%, 44.4%, 98.54%, and 99.43%; whereas in three-dimensional problems, the values are 63.64%, 89.67%, 12.08%, and 99.43%, respectively. Based on similar regularities in both two-dimensional and three-dimensional cases, a strategy to improve efficiency of topology optimization design for three-dimensional microchannel heat exchangers is proposed.