| An experiment investigation has been made of a swirling jet having a moderate ratio of swirling to axial momentum. Measurements showed that the flow achieved a self-similarity for the mean velocities rather quickly while the normal turbulent intensities reached a self-similarity state after a longer period of jet development. The analysis showed that the maximum axial and swirling velocitiy components should vary asymptotically as (x-xo)-1 and (x-xo)-2, respectively. The development of vortex and its influence to the swirling jet, as the consequence of the installation of wall. The entrainment rate and angle of spread for the swirling jet were found to be nearly twice that of the non-swirling free jet. |