常规流场质子交换膜燃料电池阴极二维两相流模型  

TWO-DIMENSIONAL, TWO-PHASE MODEL FOR CATHODE OF PROTON EXCHANGE MEMBRANE FUEL CELL WITH CONVENTIONAL FLOW FIELD

作　　者：胡军[1] 衣宝廉[1] 才英华[1] 张华民[1] 

机构地区：[1]中国科学院大连化学物理研究所燃料电池工程中心,辽宁大连116023

出　　处：《化工学报》2004年第6期967-973,共7页CIESC Journal

基　　金：国家自然科学基金 (No 5 0 2 3 60 10 );辽宁省科学技术基金资助项目~~

摘　　要：对采用常规条形流场的H2 AirPEMFC阴极建立了二维两相流模型 ,控制方程耦合了电传导方程、O2 和气态H2 O的对流 扩散方程、多孔介质连续性方程以及液态H2 O输运方程 .利用模型计算了阴极扩散层中O2 浓度、气态H2 O浓度、电流密度以及液态水饱和度的分布 ,分析了扩散层中H2The two dimensional, two-phase mathematical model was developed for the cathode of proton exchange membrane fuel cell with conventional flow field operated with air. The governing equations included conductive equation, continuity equation in porous media, the convection-diffusion equations for O2 and water vapor, and the transfer equation for liquid water. The concentration of O2 and water vapor, the current density and liquid water saturation in the diffuser were calculated. The mechanism of H2O transport in the cathode diffuser and the gaseous species concentration distribution in the diffuser were studied.

关 键 词：质子交换膜燃料电池 两相流 数值模拟 条形流场 

分 类 号：O646[理学—物理化学]