Influence of the Cavitator and Nozzle Parameters on the Efficiency of Operation of a Generator of Pulsed Jetsстатья
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Дата последнего поиска статьи во внешних источниках: 15 февраля 2024 г.
Аннотация:The regime of cavitation self-oscillations in a hydraulic system that contains a ventilatedcavity with a negative cavitation number is used to create a generator of periodic impulse jets. Theinfluence of the parameters of cavitator and output nozzle of the generator on the intensity of theimpact of liquid outflowing on an obstacle (shield) located perpendicular to the direction of jet out-flow is studied. It is found that increase in the nozzle length can significantly increase the efficiencyof the generator, and a smooth constriction of the channel ahead of the cavitator can help to increasethe operating range of the generator in the direction of larger gas blows. It is shown that there is a scaleeffect, namely, the relative intensity of self-oscillations decreases with increase in the liquid head pres-sure; however, it tends to reach a horizontal asymptote.