Velocity Measurements in Multiphase Flow by Means of Particle Image Velocimetry

Abstract

In this paper the principle of particle image Velocimetry and its application to measuring velocities in multiphase systems (liquid/solid) and the flow around bubbles rising in water is described. The aim of the measurements in the multiphase system is to simultaneously determine the velocity distributions of the individual phases. A digital mask technique is used for separating the information resulting from the different phases present in the system.