Visualization of Circular Impinging Jet Accompanying Annular Suction Flow

Effect of Length of Suction Pipe

Abstract

The effects of a length of suction pipe on the flow characteristics of a circular impinging jet accompanying an annular suction flow was examined experimentally at a fixed suction flow rate. The velocity field in the jet was visualized by using PIV (Particle Image Velocimetry). When the length of suction pipe increases, the flow field shows the phenomenon what the suction flow increases. And it is found that there exists the optimum size of the length of suction pipe.