Numerical simulations for optimizing the liquid water transport in the gas diffusion layer and gas channels of a PEMFC

被引：0
|
作者：
Yang J. [1 ]
Ma X. [1 ]
Lei T. [3 ]
Luo K.H. [2 ,3 ]
Shuai S. [1 ]
机构：
[1] State Key Laboratory of Automotive Safety and Energy, Department of Automotive Engineering, Tsinghua University, Beijing
[2] Key Laboratory for Thermal Science and Power Engineering of Ministry of Education, Department of Energy and Power Engineering, Tsinghua University, Beijing
[3] Department of Mechanical Engineering, University College London, London
来源：
Qinghua Daxue Xuebao/Journal of Tsinghua University | 2019年 / 59卷 / 07期
关键词：
Gas channel; Gas diffusion layer; Lattice Boltzmann method; Proton exchange membrane fuel cell; Water transport;
D O I：
10.16511/j.cnki.qhdxxb.2019.26.013
中图分类号：
学科分类号：
摘要：
The multiple-relation-time (MRT) lattice Boltzmann method with a high-density-ratio two-phase model was used to simulate liquid water transport in the gas diffusion layer (GDL) and gas channels of a high-current-density fuel cell. The results show the effects of Reynolds number, perforation shapes and locations in the GDL and the angles of the wave-like gas channels on the water transport. The results show that the GDL and the gas channels should be optimized together to improve the water removal rate. In addition, the results show that the water begins running out of the GDL at earlier times as the Reynolds number increases with the times not related to the wave-like gas channel angle or the perforation shape or location. The structural optimization of the perforated GDL and the wave-like gas channels can guide future designs of fuel cells with high current densities. © 2019, Tsinghua University Press. All right reserved.
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页码：580 / 586
页数：6
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