摘要
流场对于质子交换膜燃料电池(PEMFC)的燃料分布及水管理具有重要影响。该文根据银杏叶叶脉结构在双极板上设计了一种仿生结构流场。采用计算流体动力学商业软件Fluent对其峰值功率密度及内部情况进行了模拟分析。比较了分别采用该仿生流场、平行流场及五蛇流场的PEMFC在峰值功率密度、内部质量传输及电流密度分布等方面的差异,结果表明:采用仿生流场的电池峰值功率密度比平行流场高28.85%,但比五蛇流场低4.36%。由于仿生流场具有更高的气体压力,其内部反应物分布及电流密度分布比平行流场更均匀。
The flow field has a very important effect on the proton exchange membrane fuel cell(PEMFC)fuel distribution and water management.This study used the structure of ginkgo veins to design a bionic flow field on a bipolar plate.The peak power densities and internal conditions were analyzed using the commercial computional fluid dynamics(CFD)software Fluent.The peak power density,internal mass transfer characteristics and current density distributions of PEMFCs with this bionic flow field,a paralled flow field and a five-snake flow field were compared to show that the bionic flow field increased the peak power density by 28.85%over that of the parallel flow field,which was,however,still 4.36%lower than that of the five-snake flow field.The reactant distribution and the current density in the bionic flow field are better than in the parallel flow field because of the larger pressure.
作者
王泽英
陈涛
张继伟
陈金奇
冯政恒
WANG Zeying;CHEN Tao;ZHANG Jiwei;CHEN Jinqi;FENG Zhengheng(School of Mechanical and Electrical Engineering,Wuhan University of Technology,Wuhan 430070,China)
出处
《清华大学学报（自然科学版）》
EI
CAS
CSCD
北大核心
2022年第10期1697-1705,共9页
Journal of Tsinghua University(Science and Technology)
基金
国家自然科学基金面上项目(51975445)。
