Study on the Dynamic Characteristics of the Impact Loads in a Near-Wall Double-Cavitation Bubble Collapse

Cavitation and cavitation erosion are complex hydrodynamic behaviors that significantly influence the stability reliability of pumping units in aerospace navigation power systems, hydraulic engineering, other fields. Studies on have primarily heavily focused collapse multiple bubbles; understanding movement bubbles is important for research. In this study, process near-wall double-cavitation was numerically simulated experimentally verified, evolution bubble investigated. Two different distances were altered study. The distance between wall, effects dimensionless parameters, such as coefficient spacing coefficient, time, jet angle, impact load wall can be determined. It found time decreased a negative exponential distribution with an increase along decreases coefficient. angle increased initially then form quadratic function, observed With first decreased, increased, finally cubic function.