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Numerical Study of Thermal-Hydraulic Characteristics of Vein Biomimetic Microchannel Heat Exchanger
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Qiankun Zhang, Hongyan Li, Bichun Lü, Yunzhuo Zheng, Jihao Lü
Journal of Refrigeration | 2025, 46(4) : 52 - 60
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Journal of Refrigeration | 2025, 46(4): 52-60
Numerical Study of Thermal-Hydraulic Characteristics of Vein Biomimetic Microchannel Heat Exchanger
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Qiankun Zhang, Hongyan Li, Bichun Lü, Yunzhuo Zheng, Jihao Lü
Affiliations
  • College of Electromechanical Engineering, Qingdao University of Science and Technology, Qingdao, 266061, China
Published: 2025-08-16 doi: 10.12465/j.issn.0253-4339.2025.04.052
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Microchannel heat exchangers, including a bionic secondary branch (MHE-BS), complete vein bionic branch (MHE-CVB), and incomplete vein bionic branch (MHE-IVB), were designed based on the straight secondary branch (MHE-SS) inspired by the leaf vein structure of Parashorea chinensis. ANSYS FLUENT software was utilized to simulate the flow and temperature characteristics of 20 ℃ cooling water entering these heat exchanger structures under a constant heat flux of 50 kW/m2 at different inlet Reynolds numbers (Re=660.07, 990.10 and 1 320.13). The research findings indicate that multistage bionic channel structure can significantly enhance the overall heat transfer performance of the heat exchanger, with MHE-CVB showing more than a 35% reduction in inlet and outlet pressure drop compared to MHE-SS under different working conditions. In addition, it showed an decrease in surface temperature by over 2 ℃ and a strengthening factor for comprehensive heat transfer performance exceeding 1.2.

microchannel heat exchanger  /  bionic structure  /  flow and heat transfer  /  optimal design
Qiankun Zhang, Hongyan Li, Bichun Lü, Yunzhuo Zheng, Jihao Lü. Numerical Study of Thermal-Hydraulic Characteristics of Vein Biomimetic Microchannel Heat Exchanger[J]. Journal of Refrigeration, 2025 , 46 (4) : 52 -60 . DOI: 10.12465/j.issn.0253-4339.2025.04.052
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Article Info
doi: 10.12465/j.issn.0253-4339.2025.04.052
  • Receive Date：2024-01-17
  • Online Date：2026-03-13
  • Published：2025-08-16
Article Data
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History
  • Received：2024-01-17
  • Revised：2024-04-25
  • Accepted：2024-05-22
Affiliations
    College of Electromechanical Engineering, Qingdao University of Science and Technology, Qingdao, 266061, China

Corresponding:

Li Hongyan, female, associate professor, College of Electromechanical Engineering, Qingdao University of Science and Technology, 86-18661739996, E-mail: . Research fields: strength analysis of mechanical structure.
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表12种不同金属材料的力学参数
科
Family		 属数
Number of
genus		 种数
Number of
species		 占总种数比例
Percentage of
total species (%)		 属
Genus		 种数
Number of
species		 占总种数比例
Percentage of total
species (%)
鹅膏菌科Amanitaceae 2 11 5.26 鹅膏菌属 Amanita 10 4.78
小菇科 Mycenaceae 2 12 5.74 丝盖伞属 Inocybe 5 2.39
多孔菌科 Polyporaceae 8 14 6.70 蜡蘑属 Laccaria 5 2.39
红菇科 Russulaceae 3 23 11.00 小皮伞属 Marasmius 6 2.87
小菇属 Mycena 11 5.26
光柄菇属 Pluteus 5 2.39
红菇属 Russula 17 8.13
栓菌属 Trametes 5 2.39
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