Existing experimental techniques for multiphase flow permeability determination are usually considered cumbersome, expensive and time-consuming. In this work, an efficient, reliable and relatively inexpensive experimental method for two-phase flow parameter determination is developed. A new experimental method is essentially a modification of the “rock core flooding technique ” combined with inverse solution modeling in order to determine relative permeability-suction-saturation relationships. The method can be applied for a wide range of fluids, soil types and flow rates which is of particular interest in solving contaminant transport problems.; A numerical finite difference code is developed in order to perform the inverse solution process for general flow conditions. In addition, several analytical solutions are derived for specific flow scenarios in order to explain difficulties, errors and ill-posedness of the existing experimental and numerical methods as well as to gain additional physical insight about the two-phase flow phenomena.
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