Abstract
The purpose of this work is to control the diffusion and the direction of the jet flow issuing from the pentagonal duct. In this study, 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. In order to catch the flow feature the flow visualization was also performed by the LIF method. And 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.
