Numerical simulation on two-phase flow of air and power-law liquid through suddenly shrunken channels

A mathematical model of two-phase air and power-law flow is developed on the basis of the two-phase flow theory of gas and liquid and the constitutive equation of power-law fluid.The flow characteristics of two-phase mixtures of air and power-law fluid through a suddenly shrunken channel are numerically simulated by using commercial software named Fluent.Then the distribution law of two-phase parameters along axial and sectional directions is obtained.Research results show that the higher the gas velocity,liquid velocity,and pressure drop are,the more the input gas content increases.What’s more,the two-phase parameters change abruptly nearby the suddenly shrunken section,yet the mutation positions are different.In addition,the sectional distribution of the two-phase parameters is also different along axial direction.All the research results provide a theoretical basis for the design of relevant systems.