Abstract
The aim of this study is to control the diffusion and the direction of the jet flow issuing from the pentagonal duct. In order to grasp the flow feature the flow structure of the jet was visualized by a LIF method. The velocity measurements of the jet flow issuing from the pentagonal duct with and without the synthetic jet were carried out using hot-wire sensors and the constant temperature anemometer. And decays of the maximum velocity and the jet half value widths were investigated by analyzing the velocity distributions. As a result, it has been found that the jet width with synthetic jet becomes large, comparing with that of the jet without one. Moreover it has been also clarified that the jet is induced by the synthetic jet.
