A Coupling Model Of The Relative Permeability Of Porous Media

Porous medium is a common material in nature, industry and daily life. The research about the transport of porous media thus is a meaningful subject in understanding nature processes, improving industry productivities and engineering processes.This work is devoted to the research work of two-phase flow in porous media. Because of the complicacy of the geometry structure of porous media, the parallel capillary model is used to simplify the structure of porous media. This work also analyzes the flow patterns of two-phase flow and the coupling interactions between two phases in a single capillary. Concepts such as Taylor flow, Annual flow are introduced into this thesis in order to differentiate the flow patterns; and interactions such as capillary force, contact angle hysteresis and Jamin effect are analyzed. Although the flow patterns have attracted much attention in two-phase flow research field, and lots of experiments and analysis works have been reported, few investigators used different flow patterns to analyze the interactions between two phases in porous media. This thesis establishes a new coupling model by analyzing the flow patterns, and deduces the relative permeability equation for porous media.At last, the theoretical results and other researchers' experiment data are compared, a good fitting is found.