The effectiveness of cavitation cleaning process is closely linked to the ratio of the distance between a cavitation bubble and the orifice plate to its maximum radius in this process. However

most of the previous studies on cavitation bubble dynamics in the vicinity of a through-hole flat plate were limited to the factors such as morphology and jet direction

with little attention given to jet strength or evolutionary period. In this work

a two-phase compressible cavitation bubble dynamics model is used to study the multi-period evolution dynamics of cavitation bubbles near a flat plate with a through-hole

based on the open source fluid dynamics code OpenFOAM. Simulation results reveal that the maximum velocity of the liquid jet

formed by cavitation bubble collapsing

decreases as the distance parameter γ increases when it reaches the center of the hole. As the size parameter ε decreases

this liquid jet's maximum velocity at the hole's center increases. And

with a decrease in γ or ε

the minimum radius of a cavitation bubble at its first collapse increases gradually

the intensity of bubble collapsing slows down

and the time period of the first collapse is prolonged.