| PEMFC插指型流道阴极中气体扩散特性的数值分析 |
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| 引用本文： | 刘训良,齐志鹏,谭雅巍,何雅玲,陶文铨.PEMFC插指型流道阴极中气体扩散特性的数值分析[J].工程热物理学报,2004(Z1). |
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| 作者姓名： | 刘训良 齐志鹏 谭雅巍 何雅玲 陶文铨 |
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| 作者单位： | 动力工程多相流国家重点实验室 西安交通大学能源与动力工程学院 西安交通大学能源与动力工程学院 西安 |
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| 基金项目： | 国家自然科学基金资助项目(No.50236010) |
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| 摘 要： | 本文对PEMFC插指型流道阴极扩散层建立了二维单相的多组分物理数学模型,对PEMFC插指型流道的阴极扩散层中气体的扩散特性及反应行为进行了数值研究,采用有限容积法对模型控制方程进行求解,比较了插指型和平直型流道两类电池的性能曲线,以及两种流道中氧气的组分摩尔浓度和局部电流密度的分布,分析了插指型流道结构参数对电池性能的影响。
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| 关 键 词： | PEMFC 插指型流道 阴极扩散层 数学模型 数值模拟 |
NUMERICAL SIMULATION OF GASEOUS TRANSPORT BEHAVIOR IN THE CATHODE OF PEM FUEL CELL USING THE INTERDIGITATED GAS DISTRIBUTOR |
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| LIU Xun-Liang QI Zhi-Peng TAN Ya-Wei HE Ya-Ling TAO Wen-Quan.NUMERICAL SIMULATION OF GASEOUS TRANSPORT BEHAVIOR IN THE CATHODE OF PEM FUEL CELL USING THE INTERDIGITATED GAS DISTRIBUTOR[J].Journal of Engineering Thermophysics,2004(Z1). |
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| Authors: | LIU Xun-Liang QI Zhi-Peng TAN Ya-Wei HE Ya-Ling TAO Wen-Quan |
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| Abstract: | A two-dimensional, single phase, multi-component modei was developed for the cathode of PEM fuel cell using the inerdigitated gas distributor. The gaseous transport process and electrochem-ical reaction were numerically simulated. The governing equations including continuity equation , Darcy's law and the advection-diffusion equations were solved by the finite-volume method. The model was used to investigate the performance of PEM fuel cell using the interdigitated gas distributor and the conventional distributor. The concentration profiles of oxygen in the cathode and the local current density profiles were shown for comparison between the two kinds of distributors. The effect of some structural parameters of the cathode on the cell performance was studied for optimization of the cell design. |
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| Keywords: | PEM interdigitated gas distributor cathode modei numerical simulation |
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