Determination of the Hydraulic Parameters of Two-Phase Vapor-Liquid Flow in Porous High-Thermal-Conductivity Materials

Abstract

This paper presents the calculation data for the functions of relative phase permeabilities, the parameter of saturation for a porous material with the liquid phase and the two-phase parameter, as well as of the true speeds of filtration of the liquid and vapor phases of the porous material obtained with the use of a combination and analysis of two existing methods for calculating the hydrodynamical drag in the two-phase vapor-liquid flow in porous media — the Masket–Laverette and Lockhart–Martinelli methods. It has been shown that the dependence of the above quantities on the main regime-design parameters of porous heat-transfer elements is more complex and multiparametric than was thought before. On the basis of the calculation data, an interpolation dependence has been obtained for determining the parameter of saturation of porous samples with the liquid phase depending on the main regimedesign parameters of the model.