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首页> 外文会议>Proton Exchange Membrane Fuel Cells 8 >LATTICE-BOLTZMANN SIMULATIONS OF MULTIPHASE FLOWS IN PEM FUEL CELL GDLS AND MICRO-CHANNELS
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LATTICE-BOLTZMANN SIMULATIONS OF MULTIPHASE FLOWS IN PEM FUEL CELL GDLS AND MICRO-CHANNELS

机译：PEM燃料电池GDLS和微通道中多相流的格子Boltzmann模拟

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摘要

The lattice Boltzmann (LB) method is employed to simulate single and multiphase flow through porous gas-diffusion-layer (GDL) of a Proton Exchange Membrane Fuel Cell (PEMFC). The porous layer is composed of layers of fibers. The structure is reconstructed numerically and validated by other published data on porosity and pore-size distributions. The in-plane gas-permeability is greater than the through-plane values and has greater sensitivity to fiber orientations. The permeability decreases as the GDL is compressed. When liquid is introduced, multiple droplets emerge from the other side of the GDL through surface pores. On hydrophobic GDL, the liquid advancing inside the GDL is in the form of several interconnected streams leading to surface openings. As the hydrophobicity is increased the liquid break-through occurs at lower saturation.
机译：格子玻尔兹曼（LB）方法用于模拟单相和多相流过质子交换膜燃料电池（PEMFC）的多孔气体扩散层（GDL）。多孔层由纤维层组成。对结构进行了数值重建，并通过其他有关孔隙度和孔径分布的公开数据进行了验证。面内气体渗透率大于通面值，并且对纤维取向具有更高的敏感性。渗透率随GDL压缩而降低。当引入液体时，多个G液滴通过表面孔从GDL的另一侧出现。在疏水性GDL上，在GDL内前进的液体为几种相互连接的流的形式，从而导致表面开口。随着疏水性的增加，液体穿透发生在较低的饱和度下。

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  • 来源
  • 会议地点 HonoluluIL(US);HonoluluIL(US)
  • 作者

    S. Mukherjee; J. V. Cole; K. Jain; A. Gidwani;

  • 作者单位

    CFD Research Corporation, Huntsville, Alabama 35805, USA;

    CFD Research Corporation, Huntsville, Alabama 35805, USA;

    ESI US RD Inc, Huntsville, Alabama 35806, USA;

    CFD Research Corporation, Huntsville, Alabama 35805, USA;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 表面处理;
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