抄録
The velocities of both the continuos phase and the dispersed phase of the liquid-solid two-phase flow are measured simultaneously by PIV and PTV techniques, respectively. The fluorescent particles are used as the tracer particles for the fluid phase. A simultaneous image recording system is designed and the images of the tracer particles and the test particles are separated by the optical filters. The ensemble-averaged velocity and turbulent velocity fluctuation of both phases are analyzed and compared with the single-phase flow. The modification of the turbulence intensity of the fluid phase and the preferential concentration of the particles by turbulence are observed by the experiments.
