波浪环境下多孔射流水动力特性试验.

In order to study the impact of waves on the movement and dilution process of multiple jets, Particle Image Velocimetry (PIV) and Laser Induced Fluorescence (LIF) measurement systems are used to measure velocity field and concentration field under the wave environment. The results have shown that multiple jets can be divided into three zones under the wave environment:initial zone, transition zone and mixing zone. In the initial zone, respective characteristics of jet flows from various nozzles are maintained with smaller mutual influence; in the transition zone, bifurcation occurs on the jet flows, and several confluence points are formed through mutual superposition of the jet flows. The positions of peak values of average speed and concentration migrate from the centerlines of jet flows to the confluence points; in the mixing zone, due to integration of multiple jets flows, average speed and concentration are distributed in the form of single "flat peak". According to the comparative analysis, the position of confluence points will migrate downward and the multiple jets will enter into the transition zone and mixing zone more quickly with the increase of wave height and period, and the decrease of jet initial velocity. [ABSTRACT FROM AUTHOR]