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首页> 外文会议>11th fuel cell science, engineering, and technology conference 2013 >COMPARISON OF SOLID OXIDE FUEL CELL STACK PERFORMANCE USING DETAILED AND SIMPLIFIED MODELS
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COMPARISON OF SOLID OXIDE FUEL CELL STACK PERFORMANCE USING DETAILED AND SIMPLIFIED MODELS

机译：使用详细和简化模型比较固体氧化物燃料电池堆的性能

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摘要

Two computational fluid dynamics models have been developed to predict the performance of a solid oxide fuel cell stack, a detailed and a simplified model. In the detailed model, the three dimensional momentum, heat, and species transport equations are coupled with electrochemistry. In the simplified model, the diffusion terms in the transport equations are selectively replaced by rate terms within the core region of the stack. This allows much coarser meshes to be employed at a fraction of the computational cost. Following the mathematical description of the problem, results for a single cell and multi-cell stack are presented. Comparisons of local current density, temperature, and cell voltage indicate that good agreement is obtained between the detailed and simplified models, confirming the validity of the latter as a practical option in stack design.
机译：已经开发出两种计算流体动力学模型来预测固体氧化物燃料电池堆的性能，这是一种详细的简化模型。在详细模型中，三维动量，热和物质传输方程与电化学耦合。在简化模型中，输运方程中的扩散项被堆芯区域内的速率项有选择地替换。这使得可以使用较粗糙的网格，而计算成本却仅为后者的一小部分。根据问题的数学描述，给出了单电池和多电池堆栈的结果。局部电流密度，温度和电池电压的比较表明，在详细模型和简化模型之间获得了良好的一致性，从而证实了后者在电池堆设计中作为实际选择的有效性。

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