A Three-Dimensional Visualization of Air Bubbles in Bubbely Flows

Abstract

A three-dimensional visualization method (3D-BTV) for bubble measurements was developed to measure bubble shapes and velocities in a liquid. The 3D-BTV method is based on the combination the 3D shadow graph method and 3D super resolution particle tracking velocimetry. The proposed method was verified by virtual experiments and the real measurements of air bubble motions in the water, respectively. In this study, it can be realized that The 3D-BTV method has capability to measure the both bubble shapes and motions in the 3D space with highly temporal-spatial resolution in comparison with the previous technique.