Modelling scale-dependent radial two-phase flow of liquid and gas in unsaturated porous media
Su, Ninghu (2006) Modelling scale-dependent radial two-phase flow of liquid and gas in unsaturated porous media. Proceedings of the Fifth International Conference on Computational Fluid Dynamics in the Process Industries. Fifth International Conference on CFD in the Process Industries , 13-15 December 2006, Melbourne, Australia .
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In this paper we investigate scale-dependent radial two-phase flow of liquid and gas in unsaturated porous media. First we present an equation of two-phase flow of liquid and gas in porous media in radial coordinates (ETPR) based on McWhorter’s equation in Cartesian coordinates. Then we present three analytical solutions for the ETPR:  an exact solution of ETPR in three dimensions for radial two-phase flow into a spherical domain subject to an instantaneous point source input;  an exact solution of ETPR in two dimensions for two-phase outflow from a well subject to an instantaneous line source input; and  an equation of the two-phase wetting front movement in three dimensions is presented based on a coordinate transform, yielding a moving boundary problem in two-phase flow in porous media, and an analytical solution is given which can be used to infer a fractal parameter of the porous media, . These analytical solutions can aid in the verification of numerical solutions, and explicitly illustrate the functional relationships between the variables and parameters affecting two-phase flow in unsaturated porous media.
|Item Type:||Conference Item (Refereed Research Paper - E1)|
|Deposited On:||14 Jul 2009 13:25|
|Last Modified:||13 Feb 2011 18:19|
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