Basic Study on the Behavior of Fluidic Sonic Oscillators
Tsutomu Wada, Akira Shimizu, Toshiro Noritsugu · Transactions of the Society of Instrument and Control Engineers · 1976
This study has been performed from the point of view of designing a fluidic sonic oscillator. First, we experimentally and theoretically investigate the oscillation mechanism and the reattached jet switching in the oscillator. Next, on the basis of the investigations mentioned above, we formulate the condition for sonic oscillation.The results obtained can be summarized as follows:1) In a so-called sonic oscillator, the oscillation is classified into two modes. These depend upon the geometric parameters of the device and the supply pressure of the main jet. The sonic oscillation occurs when the supply pressure becomes higher than a certain level.2) The analytical model satisfactorily describes the jet switching in the oscillator and the condition for sonic oscillation. Therefore, we can theoretically predict the geometric parameters and the supply pressure to cause the sonic oscillation.