The Effect of a Cylinder in a Planar Jet

Abstract

We investigated the properties of a planar jet in which a cylindrical body was set on the center line of the jet near the nozzle. The spread of the jet and some flow properties, particularly behind the cylinder in the jet, were measured for four kinds of cylindrical bodies of different shapes. The downstream as follows: (1) The spread angle of the jet changes considerably with an increase in location of a maximum angle exists there. (1) In the wake region, the generation of the tone due to interaction between the jet and the cylinder plays a crucial role on the flow properties, rather than the shapes of the cylinder.