
网络出版:2025-10-14,
纸质出版:2025
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周谦谋, 徐峰祥, 邹震, 等. 基于螺旋-花瓣耦合仿生流场的PEMFC性能分析与评价研究[J]. 太阳能学报, 2025,46(9):382-389.
周谦谋, 徐峰祥, 邹震, 等. 基于螺旋-花瓣耦合仿生流场的PEMFC性能分析与评价研究[J]. 太阳能学报, 2025,46(9):382-389. DOI: doi:10.19912/j.0254-0096.tynxb.2024-0754.
该文基于仿生思想设计一种耦合螺旋线结构与花瓣分形的新型仿生流场(BFF)
并将提出的BFF与传统单蛇流场(1SFF)、五蛇流场(5SFF)和平行流场(PFF)的PEMFC峰值功率密度、水气传输特性、电流密度分布以及压降等性能指标进行对比分析。研究结果表明:0.6 V工作电压下
BFF的氧气质量分数平均值比PFF高67.9%
水质量分数平均值相较于PFF降低23.9%
两项均匀性指数达到0.9高于其他3种流场;BFF各界面层的平均膜态水含量小于其余3种流场
有效地去除生成产物水;BFF显著地降低压降
整体压降仅为PFF的16.7%。BFF峰值功率密度分别比1SFF高3.7%、比5SFF高5.5%、比PFF高30.1%。
This paper proposs a new bionic flow field (BFF) that integrates a spiral structure and petal-like fractals based on biomimetic principle
and compares the proposed BFF with the traditional single serpentine flow field (1SFF)
five snake flow field (5SFF) and parallel flow The performance indicators of PEMFC such as peak power density
water vapor transmission characteristics
current density distribution and pressure drop are compared and analyzed. The research results show that: under the operating voltage of 0.6 V
the average oxygen mass fraction of BFF is 67.9% higher than that of PFF
the average water mass fraction is 23.9% lower than that of PFF
and the uniformity index is higher than that of the other three flow fields
reaching 0.9; The membrane water content of each interface layer of BFF is less than that of the other three flow fields
effectively removing the product water; BFF significantly reduces the pressure drop
and the overall pressure drop is only 16.7% of PFF. The peak power density of BFF is 3.7% higher than 1SFF
5.5% higher than 5SFF
and 30.1% higher than PFF.
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