Comprehensive Characteristic Evaluation of Proton Exchange Membrane Fuel Cells: Novel Flow Field Configuration Design Based on Perforation under the Ridge

This study focuses on the multiparameter regulation mechanism of perforated structures under the ridges in the single‐channel serpentine flow field. A systematic analysis of geometric shapes, positions, sizes, and arrangement strategies reveals a synergistic optimization path for mass transfer, water drainage, and pressure drop. Initially, by introducing semicircular perforations beneath the ridges, the gas diffusion efficiency is significantly enhanced. Subsequently, maintaining a consistent cross‐sectional area of the perforations, it is found that the isosceles triangular perforation performs optimally in high current density regions. Furthermore, the effects of perforation placement beneath the ridge versus at the middle of the ridge are investigated. Simulation results indicate that perforations located beneath the ridge significantly reduce concentration losses and decrease the pressure drop by 44.58%. In the study of perforation cross‐sectional geometry, data shows a nonmonotonic trend in cell performance as the perforation cross‐sectional area increases, with performance first improving and then declining. The optimal gas transfer efficiency and disturbance effect occur when the perforation area reaches a critical value (0.2512 mm 2 ). Finally, various perforation distribution strategies along the ridge are considered. It is indicated that uniformly distributing perforations along the entire ridge structure results in optimal overall performance.