抄録
An experimental investigation was performed to study the dynamic process of bursting in pulsating turbulent flow. Particular emphasis is placed on the details of the process of turbulence generation and its propagation in the radial direction.
The results show that the resonance in pulsating flow affects only the generation of turbulence, and that another important factor which characterizes the dynamic behaviour of turbulence is the coherency of propagation of generated turbulence: changing its frequency, the generated turbulence propagates to the centre-line of the tube with a unique propagation time which scales on the wall parameters. The propagation time in which the turbulence propagates from the position of origin to the centre-line agrees well with the mean burst period.
This fact suggests that the entire cycle of the bursting phenomenon is characterized by the propagation of generated turbulence in the radial direction and that the bulk parameter dependence of burst period is attributable to the pipe radius.
