A.A.Nazarenko
A pressure in sound-generating element of a hydrodynamic radiating system during the period of vibration

Acoustic bulletin, Vol. 7 4, (2004) p.52-56
A direct-flow hydrodynamic source of acoustic vibrations with a sound generating element of cavitation nature is studied. Originating from pressure variation rate in the cavitation area with accounting for its particular phases of forming and developing, the pressure during the whole vibration period is found as a time-dependent function. The derived function is tested for extremum. The overpressure value is found, at which the explosive exhaust of the cavitation area content occurs. Calculated pressure vs. time dependence is compared with actual oscillograms of acoustic signal generated by the radiating system.
KEY WORDS:
direct-flow hydrodynamic source of acoustic vibrations, cavitation area, acoustic signal
TEXT LANGUAGE: Russian