Stages and types of cavitation
The occurrence of cavitation can be divided into the following stages.
1) Incipient stage:The occurrence of bubbles is detected with the naked eye or other means;
2) Developed stage: The nascent stage is further developed, and a large number of bubbles occur;
3) Incipient stage:Bubbles disappear due to pressure rise.
There are four types of cavitation:
1) Travdling cavitation;
2) Fixed or attached cavitation;
3) Vortex cavitation;
4) Vibration cavitation.
Free cavitation is the generation of vapor bubbles in a flowing liquid, while growing in the liquid, it collapses to a high pressure.
Fixed cavitation is to form a cavity on the surface of a flowing object or the side wall of a flow channel and attach it to the wall surface.
Vortex cavitation is the occurrence of cavities in the low-pressure part of the vortex. This cavitation occurs at the propeller blade end.
Vibration cavitation is cavitation that occurs in pulsating liquids with large amplitude and high frequency pressure. This kind of cavitation is often used for material cavitation failure experiments, and it is usually rare in hydraulic machinery. Mobile cavitation and fixed cavitation often occur in hydraulic machinery.
https://www.wxxjyby.com/