Unsteady three-dimensional numerical study of mass transfer in PEM fuel cell with spiral flow field
Unsteady three-dimensional numerical study of mass transfer in PEM fuel cell with spiral flow field
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DOI：
10.1016/j.ijhydene.2016.12.084
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发表时间：
2017-01
影响因子：
7.2
通讯作者：
Tamerabet Monsaf;B. Hocine;Sahli Youcef;M. Abdallah
中科院分区：
文献类型：
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作者：
Tamerabet Monsaf;B. Hocine;Sahli Youcef;M. Abdallah
双极板设计及其流场形状对燃料电池性能有重要影响。在本工作中，一个FORTRAN程序已经开发了研究的通道宽度，螺旋通道的匝数和流动方向上的反应物消耗的质子交换膜燃料电池（PEMFC）与螺旋流场设计的影响。控制方程采用柱坐标系下的有限体积法离散。结果表明：槽肋宽度比对电池性能有影响，槽肋宽度比越大，槽肋与GDL的接触面积越大，反应物渗入GDL的量越多，反应物分布越均匀。螺旋通道匝数的增加提高了反应物分布的均匀性。当反应物从螺旋通道的外侧注入并从其内侧喷射时，通道螺旋形状产生离心力，该离心力增强电池性能。
Bipolar plate design and its flow field shape have an important effect on the fuel cell performance. In this work, a FORTRAN program has been developed to investigate the effects of the channel width, the number of turns of the spiral channel and the flow direction on the reactants consumption in a proton exchange membrane fuel cell (PEMFC) with a spiral flow field design. The governing equations are discretized using the finite volume method in cylindrical coordinates. The results show that the channel-rib width ratio influences the cell performance; the higher ratio, the more important contact area between the channel and the GDL, the more reactants quantity seeped to the GDL and more uniform reactants distribution is. The increasing the spiral channel turns number improves the reactants distribution uniformity. The channel spiral shape engenders a centrifugal force which enhances the cell performances in the case when the reactants are injected from the external side of the spiral channel and ejected from its internal one.