Simultaneous measurement of velocity and oxygen distributions using PIV-PSP hybrid system

A simultaneous measurement technique for the velocity distributions and scholar distributions, e.g., pressure, temperature, and so on, has been proposed. It visualized the spatial distribution using the multi-purpose particles, which has been coated with pressure-sensitive dye. The proposed particle technique, called the PSParticle method, is a hybrid system combining the technologies of pressure-sensitive paint (PSP) and particle image velocimetry (PIV) and allows the particle velocity and oxygen distribution to be measured simultaneously. A luminescence lifetime-based imaging technique involving double frame imaging is introduced. The system is calibrated and demonstrated in application to measurement of the oxygen distribution in an air jet. The velocity distributions are measured using the PSParticle movement (PIV). Simultaneously, the oxygen fraction distributions are measured using the PSParticle intensity lifetime (PSP). Fig. 1. Timing chart for PSP/PIV Hybrid image. Fig.2 Example of measured data. (velocity and oxygen mole-fraction)