抄録
Bubbly flows are found in a lot of industrial fields such as power and chemical plants and water purification system. PIV is useful tool to investigate the bubble motion and flow structure in the liquid phase simultaneously. In the present study, we have developed velocity measurement system of solid-gas-liquid three phase flow by phase discrimination using interferometric imaging of scattered light. We applied this system to microbubble flow, measuring area was about 9.6mm×8.0mm and we could discriminate the bubbles from the solid tracers within a range of ±1mm from the focal plane. Moreover, bubbles going up and solid tracers settling out were captured. From these results, it is concluded that this system can be applied successfully to measurement of the velocity distribution of three phase flows.
