On the Applicability of the Leverett Function to Capillary Pressure : A Lattice Boltzmann Study(Fluids Engineering)

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  • MUNEKATA Toshihisa
    Department of Aeronautics and Astronautics, Graduate School of Engineering, Kyoto University
  • INAMURO Takaji
    Department of Aeronautics and Astronautics, Graduate School of Engineering, Kyoto University
  • HYODO Shi-aki
    (株)豊田中央研究所材料基盤研究部計算物理研究室

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  • 毛管圧の解析に対するLeverett関数の適用性 : 格子ボルツマン法による検討(流体工学,流体機械)
  • 毛管圧の解析に対するLeverett関数の適用性--格子ボルツマン法による検討
  • モウカンアツ ノ カイセキ ニ タイスル Leverett カンスウ ノ テキヨウセイ コウシ ボルツマンホウ ニ ヨル ケントウ

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Abstract

Capillary pressure versus saturation curve is important for the estimation of drainage property of porous media such as gas diffusion layers (GDLs) of polymer electrolyte fuel cells. The Leverett function is proposed for correlating dimensionless capillary pressure with saturation in the soil science field. In this paper we use the lattice Boltzmann method for the calculation of capillary pressure in GDL and investigate the applicability of the Leverett function in GDL. It is found that the standard Leverett function is not applied to estimate the capillary pressure versus saturation curve, particularly when the wettability and the viscosity are changed.

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