PEMFC阴极蛇形通道两相流动特性的数值研究

秦磊; 郭雪岩

doi:10.19912/j.0254-0096.tynxb.2024-0037

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太阳能学报 ›› 2025, Vol. 46 ›› Issue (5) : 21-28. DOI: 10.19912/j.0254-0096.tynxb.2024-0037

PEMFC阴极蛇形通道两相流动特性的数值研究

秦磊, 郭雪岩

作者信息 +

NUMERICAL STUDY ON TWO-PHASE FLOW CHARACTERISTICS IN SERPENTINE CHANNELS OF PEMFC

Qin Lei, Guo Xueyan

Author information +

文章历史 +

摘要

为研究质子交换膜燃料电池（PEMFC）在不同工况条件下的水管理特性,基于VOF方法对PEMFC阴极蛇形通道中的两相流动过程进行数值研究,采用在通道底面挖取入水孔的方式,通过设定不同相态比例的水为入口条件,旨在分析阴极通道中不同相态比例混合物的两相流动状态和输运过程对燃料电池水管理的影响。结果表明：通过分析通道入口处的水团分离特性,发现不同相态比例对水团在入口处的分离时间、分离体积有显著的影响,并发现入口处水团的两种分离方式以及壁面偏好差异,尤其是U型管处堆积差异的现象更加明显;通道中观测到的特征流型与两种分离方式有关,并且影响着通道的排水性能。

Abstract

This study investigates the water management characteristics of proton exchange membrane fuel cells （PEMFC） under varying operational conditions. A numerical analysis of two-phase flow within the cathode’s serpentine channels was conducted using the Volume of Fluid （VOF） method. Water inlet holes were created at the bottom of the channel and different phase ratios were set as inlet conditions. The objective was to examine the impact of two-phase flow and transport processes of mixtures with varying phase ratios on water management.The results reveal that different phase ratios significantly influence the separation time and volume of water at the channel inlet. Two distinct separation pattern and wall preference discrepancies were identified, with significant accumulation differences observed at U-shaped tube sections. The characteristic flow patterns within the channel correlate with the separation patterns and influence the channel's drainage capabilities.

导出引用

秦磊, 郭雪岩. PEMFC阴极蛇形通道两相流动特性的数值研究[J]. 太阳能学报. 2025, 46(5): 21-28 https://doi.org/10.19912/j.0254-0096.tynxb.2024-0037

Qin Lei, Guo Xueyan. NUMERICAL STUDY ON TWO-PHASE FLOW CHARACTERISTICS IN SERPENTINE CHANNELS OF PEMFC[J]. Acta Energiae Solaris Sinica. 2025, 46(5): 21-28 https://doi.org/10.19912/j.0254-0096.tynxb.2024-0037

中图分类号： TK911.4

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