Numerical Simulation and Experimental Analysis of Volume Alternate Cavitation (VAC) - A New Cavitation Generation Method

Cavitation generation methods have been applied in multifarious directions due to their diversity. And scholars carried out numerous researches and discussions on cavitation methods. The purpose of this study is explore the generating mechanism evolution law volumetric alternate (VAC). In VAC, liquid water placed an airtight container with variable volume. With volume alternately changes, inside continues cavitate. study, mixture turbulence model in-cylinder dynamic grid were used apply computational fluid dynamics (CFD) simulation cavitation. simulation, cloud images at 7 heights central axis are monitored, phenomenon height eccentricity analyzed detailedly. By using method flow visualization (CFV), clarified. synergistic effects experiments high-speed camera capture confirm simulation. experiment, change stroke 20 mm, frequency 18 Hz, shooting set 10000 fps. results show that position occurring has a reasonable during whole cycle cloud. It evident alternation corresponds generation, development collapse stages bubbles.