Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1513247 | Energy Procedia | 2012 | 9 Pages |
Abstract
A scheme for two-phase flow with large density differences using the lattice Boltzmann method (LBM) was applied to investigate the optimum gas channel design for water drainage. Three different channel geometries were used: rectangular, trapezoidal, and triangular with constant gas flow rate and a droplet initially placed at the corner. The results show that the rectangular channel offers the best water removal characteristics under a moderate pressure drop. When using hydrophilic gas channels, a larger droplet is drawn up, which may induce better fuel cell performance. The cases of both channels with the same cross-section area, height and width are discussed.
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