新能源车用板翅式换热器单相数值模拟研究

doi:10.6040/j.issn.1672-3961.0.2025.061

摘要/Abstract

摘要： 基于板翅式换热器翅片通道单相流动换热数值模拟分析,研究平直和锯齿两种翅片类型以及不同结构参数锯齿翅片内的速度分布、平均表面传热系数和压降特性。采用CFD软件,以剪切应力传输(shear stress transport, SST) k-ω湍流模型对50%浓度乙二醇水溶液在翅片通道的单相换热进行数值模拟,并试验验证。结果表明:翅片类型及结构参数对流动换热影响显著,锯齿翅片流动换热特性优于平直翅片;改变锯齿翅片结构参数,发现流速增大则换热与压降均上升;减小翅片高度、间距、间断长度或增大翅片厚度均利于换热,但压降也随之增大。

关键词: 板翅式换热器, 新能源汽车, 锯齿翅片, 单相换热, 数值模拟

Abstract: Numerical simulation analysis of single-phase flow and heat transfer in fin channels of plate-fin heat exchangers was conducted to investigate the velocity distribution, average surface heat transfer coefficient, and pressure drop characteristics of plain and serrated fins, as well as serrated fins with different structural parameters. CFD software with the shear stress transport(SST)k-ω turbulence model was employed to numerically simulate the single-phase heat transfer flow of a 50% ethylene glycol aqueous solution in the fin channels, and experimental validation was performed. The results showed that the fin type and structural parameters significantly influenced the flow and heat transfer, with serrated fins exhibiting better flow and heat transfer characteristics than plain fins. By altering the structural parameters of the serrated fins, it was found that an increase in flow velocity led to a rise in both heat transfer and pressure drop. Reducing the fin height, spacing, or discontinuity length, or increasing the fin thickness, was beneficial for heat transfer, but also resulted in an increase in pressure drop.

Key words: plate-fin heat exchanger, new energy vehicles, serrated fins, single-phase heat transfer, numerical simulation

中图分类号:

TK124

屈会格,刘艳,安春国,李克锋,张井志. 新能源车用板翅式换热器单相数值模拟研究[J]. 山东大学学报 (工学版), 2026, 56(5): 182-191.

Qu Huige, Liu Yan, An Chunguo, Li Kefeng, Zhang Jingzhi. Single-phase numerical simulation research of plate-fin heat exchangers for new energy vehicles[J]. Journal of Shandong University(Engineering Science), 2026, 56(5): 182-191.

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