Calculation of two-phase flow in micro-channels of variable section with account of compressibility of one phase

In this work, calculations of two-phase flow in channels of variable cross section are performed taking into account the compressibility of the gas phase. The geometry of the problem, the computational grid and the numerical solution of the system of equations of motion are implemented in a bundle of open Salome-OpenFOAM packages. According to the results of calculations, volumetric costs and volume contents of phases were found and averaged over time. Comparing the obtained values with the volume flow rates of the single-phase flow in the examined structures, the relative phase permeabilities of fluids are obtained.