I142 LBMを用いた固体高分子形燃料電池におけるGDL内液水流動に及ぼす濡れ性分布影響(OS-5:燃料電池・二次電池関連研究の新展開(4))

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  • I142 LBM Analysis of the Effect of Wettability Distribution on Liquid Water Transport in GDL of PEM FC

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Flooding is one of the problems to be solved for practical use of PEFC. In this study, the numerical simulation using the lattice Boltzmann method (LBM) was developed to elucidate the liquid water behavior in a gas diffusion layer. In the equal density LBM code developed by the authors, there is a problem that setting value of water flow rate was not ensured. This paper explains the applied improvements for setting the inlet boundary conditions, keeping the fast calculation for the large-scale simulation, and the improved results. The instability of simulation, however, still remains as an unsolved issue, and the cause is also discussed.

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