The objective of this work is to establish the design principles for a proton exchange membrane fuel cell in automotive applications. In this work, the macro-scale analysis was considered to create the overall design principle. A combination of experiments and numerical simulations were carried out and the results analyzed to enhance understanding of the behavior of the large-scale 300-cm² proton exchange membrane fuel cell under automotive operations. A three-dimensional computational fluid dynamics-based methodology was used to predict such as the current and temperature distributions of this design as a function of anode relative humidity. The effect of flow direction and the cooling pattern on this design was also taken into account to enhance the understanding for this selected flow-field design. The predictions show that the gas flow and cooling directions are important dependent variables that can impact the overall performance and local distributions.

中文翻译：

---

汽车应用大型PEM燃料电池流场的宏观分析

这项工作的目的是建立汽车应用中质子交换膜燃料电池的设计原理。在这项工作中，考虑了宏观分析以创建总体设计原理。进行了实验和数值模拟的组合，并对结果进行了分析，以加深对大型300-cm ²行为的了解汽车操作下的质子交换膜燃料电池。基于三维计算流体动力学的方法被用来预测例如该设计的电流和温度分布与阳极相对湿度的关系。还考虑了流向和冷却方式对该设计的影响，以增强对所选流场设计的理解。预测表明，气流和冷却方向是重要的因变量，会影响整体性能和局部分布。