CIESC Journal ›› 2016, Vol. 67 ›› Issue (S1): 40-46.doi: 10.11949/j.issn.0438-1157.20160720

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Capillary pressure-saturation relation for gas-liquid two-phase fluid in spherical pore

LIU Guiling, MIN Jingchun, TANG Yicun   

  1. Key Laboratory for Thermal Science and Power Engineering of Ministry of Education, Department of Engineering Mechanics, Tsinghua University, Beijing 100084, China
  • Received:2016-05-25 Revised:2016-06-02 Online:2016-08-31 Published:2016-08-31
  • Supported by:

    supported by the National Natural Science Foundation of China (51376103).


The relationship between capillary pressure and saturation is one of the most basic and important issues of multiphase flow in porous media. The-state-of-the-art of theoretical models on capillary pressure-saturation relation as well as the progress of Leverett-J function are reviewed and discussed, and then the capillary pressure-saturation equations for liquid-gas two-phase fluid in a single spherical cavity are derived through geometry manipulation. Calculations are performed for solid-liquid contact angles of 10°, 30°, 60° and 90° using such equations, the obtained results are consistent with the experimental data in the literature, providing a rational explanation for the variation characteristics of the capillary pressure-saturation curve.

Key words: porous medium, spherical pore, gas-liquid two-phase fluid, capillary pressure, saturation, porosity

CLC Number: 

  • O359+.1
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