| PEM燃料电池毛细压力流道拓展模型 |
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| 引用本文： | 杨晓光,叶强,郑平. PEM燃料电池毛细压力流道拓展模型[J]. 工程热物理学报, 2011, 0(3): 501-504 |
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| 作者姓名： | 杨晓光 叶强 郑平 |
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| 作者单位： | 上海交通大学动力机械与工程教育部重点实验室; |
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| 基金项目： | 国家自然科学基金资助项目(No.50876065); 上海市浦江人才计划(No.09PJ1406400) |
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| 摘 要： | 多孔电极与流道内的水淹现象是制约质子交换膜(PEM)燃料电池性能提高的关键难题.传统的宏观两相模型普遍存在液态水饱和度预测值偏低的不足,而流道内气液两相雾状流的假设则是低估水淹程度的一个主要原因.本文提出了反映流道壁面浸润差异性的毛细压力流道拓展模型,并对低气速下燃料电池内的传热传质进行了模拟.计算结果表明,该模型克服...
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| 关 键 词： | 质子交换膜燃料电池 水淹 两相传输 数值模拟 毛细压力 |
A Capillary Extended Channel Model of PEM Fuel Cells |
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| YANG Xiao-Guang YE Qiang CHENG Ping. A Capillary Extended Channel Model of PEM Fuel Cells[J]. Journal of Engineering Thermophysics, 2011, 0(3): 501-504 |
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| Authors: | YANG Xiao-Guang YE Qiang CHENG Ping |
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| Affiliation: | YANG Xiao-Guang YE Qiang CHENG Ping (Ministry of Education Key Laboratory of Power Machinery and Engineering,Shanghai Jiaotong University,Shanghai 200240,China) |
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| Abstract: | Water flooding in porous electrodes and gas channels is the main issue hampering the performance of Proton Exchange Membrane(PEM) fuel cells.Since most traditional numerical models are based onMist-flowassumption,which will greatly underestimate the liquid saturation within the cell,it is of vital importance to develop a model accounting for liquid evolution in gas channels. In light of that,we propose a capillary extended channel model and carry out a series of simulations focusing on heat and mass transpo... |
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| Keywords: | proton exchange membrane fuel cell water flooding two-phase flow numerical modelling capillary pressure |
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