MODELING OF A HORIZONTAL CIRCULAR FREE JET OSCILLATION DUE TO STANDING WAVES AND ITS TURBULENCE PROPERTIES

Abstract

This study concerns the influences of standing waves on a circular free turbulent jet. A circular free jet oscillates and is in connection with the motion of standing waves. The motions of the jet oscillations are classified into three pattern by experimental data. As increasing the amplitude of the waves, the jet oscillations become vertically asymmetric and discontinuous. The oscillations of the jet is modeled by a coupled equation of the free jet with small amplitude wave theory. The simple jet-wave interaction model can be well described the jet oscillations. Furthermore, the spatial variations of the turbulence properties are investigated.