固液二相流における固体粒子の挙動

垂直管内混相流に関する研究

抄録

Several investigations have been made experimentally into the radial distribution of particles when dilute solid-liquid mixtures are carried in turbulent flow through a vertical circular pipe. It was observed that the profile of particle concentration is dependent on the particle Reynolds number and the tube Reynolds number.
In order to explain that phenomena we examined the radial position of a single particle and the peak position of particle concentration distribution in both upward and downward flow. Consequently there was nearly correspondance between their positions, therefore it was clarified that not the interaction of particles but the behavior of single particle causes the phenomena which is observed in dilute solid-liquid two phase flow. And we were able to understand qualitatively about the radial position of particles to consider the lateral pressure force and the lateral frictional force acting on the surface of a particle with regard to the lift force in a non-uniform velocity profile flow.