A particle-image velocimetry tracer generating technique for liquid flows

摘要

A device to generate micro-bubbles as seeding particles for particle-image velocimetry (PIV) measurements in liquid flows is introduced. The diameter distribution of the bubbles is measured using interferometric particle imaging (IPI). This note shows the feasibility of the device to create bubbles with a diameter distribution that matches the requirements of PIV measurements in liquid flows such that a viable alternative to solid seeding materials for PIV measurements is available.