Analysis of Two-phase Mixture Flow in Vertical Pipeline

摘要

This paper presents a theoretical model of two-phase flow of mixtures of water and solids in vertical pipelines. This model includes several factors, which can be analytically interpreted. Simplified equations for approximate calculations have been also derived. Using the equations of two-phase flow presented in this paper, cases for different systems of vertical hydraulic transport can be calculated. Model was validated by comparison with the experimental results from industrial hydraulic systems for transport of coal from underground mines. Also presented are some examples of analyses of head loss and slip velocity changes in function on concentration of solids in mixture, diameter of the pipe and diameter of solids.