Abstract
The purpose of this study is to reveal the suppression mechanism of an edge-tone generated by jet-wedge interaction. A passive control was achieved by means of a pair of side plate attached near the nozzle exit along to the jet issuing direction. Velocity measurement was conducted to clarify the effect of the plate on the edge-tone suppression. The characteristics of flow through a gap between the side plate and nozzle tip was investigated. Then it is revealed that the entrainment plays an important role to vary the sound property associated with the flow field patterns.
