Home – Home – Jornals – Thermophysics and Aeromechanics 2004 number 4

Results of experimental study about development of swirl flow instability in a cubic container are presented. The circumferential and axial components of velocity vector were measured with methods of laser Doppler anemometry for the range of Reynolds number 1000-2500. The scenarios of swirl flow development and pulsation growth moments are very different for the cases of cubic and cylindrical containers. The dependency of pulsation amplitude vs. Reynolds number shows that the starting point for linear growth of amplitude corresponds to Re = 1400. The spectral analysis demonstrated existence of different modes for flow disturbance at different Reynolds numbers: for the range 1400-2000 this pulsation is close to harmonic, and then extra modes are developing.