New flow field configurations are developed to improve the performance of polymer electrolyte membrane fuel cells (PEMFCs). The developed designs aim to uniformly distribute the reactants over the reaction area of the catalyst layer surface, boost the under-rib convection mass transport through the gas diffusion layer, decrease the water flooding effect in the gas diffusion layer-catalyst layer interface, and maintain the membrane water content within the required range to augment protonic conductivity. To evaluate the performance parameters of a PEMFC, a comprehensive three-dimensional, two-phase mathematical model has been developed. The model includes the charge transport, electrochemical reactions, mass conservation, momentum, energy, and water transport equations. The results signify that the improved flow field patterns attain a considerable boosting of the output power, the under-rib convection mass transport, improvement of the reactant distribution over the catalyst layer surface and decline of the liquid water saturation in the gas diffusion layer-catalyst layer interface. The developed configurations achieve a higher power density of 0.82 W/cm² at a current density of 1.74 A/cm², compared to the standard serpentine configuration, which attains about 0.67 W/cm² at a current density of 1.486 A/cm².Accordingly, the develop configurations demonstrate a 22.6% enhancement in power density.

开发了新的流场配置以改善聚合物电解质膜燃料电池（PEMFC）的性能。所开发的设计旨在使反应物均匀分布在催化剂层表面的反应区域上，促进肋骨对流下通过气体扩散层的传质，降低气体扩散层-催化剂层界面中的注水效果，并保持膜水含量在所需范围内以增加质子传导性。为了评估PEMFC的性能参数，已开发了一个全面的三维，两阶段数学模型。该模型包括电荷传输，电化学反应，质量守恒，动量，能量和水传输方程。结果表明，改进的流场模式可显着提高输出功率，肋下对流传质，改善催化剂层表面上的反应物分布以及降低气体扩散层催化剂中的液态水饱和度层接口。开发的配置可实现0.82 W / cm的更高功率密度²的电流密度为1.74 A / cm ²，而标准的蛇形结构在1.486 A / cm ²的电流密度下可达到约0.67 W / cm ^{2。相应地}，展开的结构显示出功率提高了22.6％密度。