可再生能源2025，Vol.43Issue(5)：593-601,9.
质子交换膜燃料电池锯齿形流道性能数值模拟研究
Performance numerical simulation of proton exchange membrane fuel cells with serrated flow channel
摘要
Abstract
The structure of flow channel is a critical factor affecting the performance of proton exchange membrane fuel cell(PEMFC).Optimizing the structure of the flow channel is essential for enhancing the performance and service life of PEMFC.Compared to straight channels,channels with varying shapes can improve reactant gas transport,thereby improving the output performance of the cell.In this study,a serrated channel with periodic cross-sectional contraction is proposed.To analyze the transport characteristics and performance of this design,a three-dimensional,Multiphysics-coupled PEMFC model was developed using computational fluid dynamics(CFD)in COMSOL Multiphysics.The effects of the width and cycle length of the flow channel cross-section on the performance of the fuel cell was investigated.The results show that under high current density,the maximum net power of the serrated channel is increased by 6.12％compared to the straight channel,along with enhanced oxygen transport and liquid water removal.For the serrated flow channel,under the same flow rate conditions,moderate narrowing of the periodic contraction's minimum width improves oxygen distribution uniformity and drainage efficiency.Additionally,moderately reducing the contraction periodicity promotes gas flow velocity uniformity.The serrated channel with a narrowest width of 0.8 mm and a periodicity of 10 mm exhibits the highest net power improvement.However,excessive reduction in the narrowest width and shape variation period increases inlet pressure losses,ultimately degrading system net power.关键词
质子交换膜燃料电池/锯齿形流道/计算流体动力学仿真/多物理场耦合Key words
proton exchange membrane fuel cells/serrated flow channel/computational fluid dynamics simulation/multiple physical field coupling分类
能源与动力引用本文复制引用
赵奕凡,邱鹏,邵杰,梁月明,吴友华,郑灏..质子交换膜燃料电池锯齿形流道性能数值模拟研究[J].可再生能源,2025,43(5):593-601,9.基金项目
广西重点研发计划项目(桂科AB22362) （桂科AB22362）
柳州市科技攻关与新产品试制项目(2022ABA0103). （2022ABA0103）
