S053022 Jet Flow Issuing from Pentagonal Duct

Abstract

The purpose of this work is to control the diffusion and the direction of the jet flow issuing from the pentagonal duct. The velocity measurements of the jet flow issuing from the pentagonal duct with and without the synthetic jet were performed by means of hot wire sensors and the constant temperature anemometer. In order to catch the flow feature the flow visualization was also conducted by the LIF method. 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 clarified that the jet width with synthetic jet becomes large, comparing with that of the jet without one. Moreover it has been also found that the jet is induced by the synthetic jet.