Abstract
As a part of study on the diffusion control of jet flow, the purpose of this study is to control the jet diffusion using the deforming nozzle. The shape of polypropylene nozzle can change from square shape into cruciform one smoothly. The velocity measurement of the jet flow was carried out by using a hot-wire anemometer, by changing the shape of nozzle variously. The basic characteristics of the jet, such as velocity distributions, half value widths and turbulent intensities were obtained. As a result, it has been found that the jet width in xOy'-plane is large, comparing with that in xOz-plane. Moreover it has been also clarified that the effect of the deforming of the nozzle on jet diffusion is appeared in xOy'-plane.
