文献类型：期刊文献

英文题名：A CFD-based manifold design methodology for large-scale PEM fuel cell stacks

作者：Pan, Weitong[1,2];Tang, Longfei[1];Gao, Yunfei[1];Ding, Lu[1];Dai, Zhenghua[1];Chen, Xueli[1];Wang, Fuchen[1]

机构：[1]East China Univ Sci & Technol, Inst Clean Coal Technol, Shanghai 200237, Peoples R China;[2]East China Univ Sci & Technol, Div Proc Equipment Sci & Engn, Shanghai, Peoples R China

年份：2025

卷号：71

期号：1

外文期刊名：AICHE JOURNAL

收录：;EI(收录号：20243616995392);WOS:【SCI-EXPANDED(收录号:WOS:001303940800001)】；

基金：China National Postdoctoral Program for Innovative Talents, Grant/Award Number: BX20230121; Shanghai Post-doctoral Excellence Program, Grant/Award Number:2023741; China Postdoctoral Science Foundation, Grant/Award Number:2023M741163

语种：英文

外文关键词：flow distribution; manifold design methodology; PEM fuel cell; pressure reconstruction; pressure recovery

摘要：The flow distribution issue is of significance to the fuel cell stack performance and durability, which herein is studied from a theoretical and practical level. The manifold flow fundamentals are clarified and the pressure-reconstruction-based principle to regulate flow distribution is revealed. The prerequisite and corequisite lie in the ratio of pressure drop between headers and the entire manifold, and the pressure recovery in the inlet header. Accordingly, a step-by-step manifold design methodology is proposed and further quantified by detailed and organized simulations. A desirable effect on flow uniformity is validated in large-scale stacks consisting of 300 and 400 cells, and the values of flow uniformity index represented by coefficient of variation (CV) are 3.32% and 2.95%, respectively. Moreover, a novel wedge-shaped layout of the intake header is proposed for further optimization. The corresponding CV values have notably declined to 1.36% and 1.29%, nearly 60% lower than the conventional rectangular counterparts.