抄録
It is well known that a round jet has a large vortex structure, but the flow chracteristics, vortex structure, of resonance jet has not been made clear yet. In this study, the flow characteristics, vortex structure, of resonance free and impinging jets are examined experimentally using flow visualization technique, and it is made clear that the resonance free and impinging jets have large vortex structures and their behavior can be controlled by chainging the volume of resonance room. The vortex structure of resonance free jet is very effective to enhance mixing or diffusion. The resonance impinging jet flows on the plate extending vortex rings with a certain interval.
