@article{Zhang2025, 
author = {Qiankun Zhang and Hongyan Li and Bichun Lü and Yunzhuo Zheng and Jihao Lü},
title = {Numerical Study of Thermal-Hydraulic Characteristics of Vein Biomimetic Microchannel Heat Exchanger},
year = {2025},
journal = {Journal of Refrigeration},
volume = {46},
number = {4},
pages = {52-60},
keywords = {microchannel heat exchanger, bionic structure, flow and heat transfer, optimal design},
url = {https://www.sciopen.com/article/10.12465/j.issn.0253-4339.2025.04.052},
doi = {10.12465/j.issn.0253-4339.2025.04.052},
abstract = {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 1320.13). 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.}
}