2147 PIV を利用した含粒子液噴流の両相速度同時計測  [in Japanese] Simultaneous Measurement of Two-Phase Velocities in Particle Laden Water Jet by Means of PIV  [in Japanese]

This paper describes about the characteristics in the particle laden water jet flow. The experiments are carried out in a particle-laden jet where the mean center velocity of the jet is about 1.9m/s, the particle mean diameter is 389μm and volume flux is 0.25%. In the experiments, the authors propose a new method for measuring the both phase velocities in simultaneously. The technique is based on the PIV. The intensity of the scattering light is used for discriminating the phase of water or particle. The results show the mean velocity of the water-phase has no change with laden particles under the dilute concentration. The fluctuation velocity in the vertical direction is not changed however that of lateral direction is decreased. The Reynolds stress is also decreased when adding the particle, The new experimental method can be presented these features in two-phase flow.