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首页> 外文期刊>International Journal of Electrochemical Science >Numerical Simulation of the Effects of Obstacles in Gas Flow Fields of a Solid Oxide Fuel Cell
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Numerical Simulation of the Effects of Obstacles in Gas Flow Fields of a Solid Oxide Fuel Cell

机译：固体氧化物燃料电池气体流场中障碍物影响的数值模拟

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摘要

In this study, the local transport phenomena and overall cell performance of a single planar anodesupported solid oxide fuel cell with/without rectangular obstacles inside the anode and cathode gas flowchannels are numerically investigated by using a three-dimensional mathematical model. Numericalresults of two cases including temperature distribution, species concentration distribution, and currentdensity distribution are reported and compared. The results indicate that the maximum temperature ofthe fuel cell with obstacles is about 5 K lower than that of the fuel cell without obstacles. It is alsoobserved that the hydrogen utilization is improved and a more uniform oxygen distribution is obtaineddue to the presence of rectangular obstacles. In addition, the pressure drop penalty of the fuel cell withobstacles is greatly increased.
机译：在这项研究中，通过使用三维数学模型，数值研究了单个平面阳极支撑的固体氧化物燃料电池在阳极和阴极气体流道内部具有/不具有矩形障碍物的局部传输现象和整体电池性能。报告并比较了两种情况的数值结果，包括温度分布，物种浓度分布和电流密度分布。结果表明，具有障碍物的燃料电池的最高温度比没有障碍物的燃料电池的最高温度低约5K。还观察到由于矩形障碍物的存在，提高了氢的利用率并获得了更均匀的氧分布。另外，具有障碍的燃料电池的压降损失大大增加。

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