Abstract:
Based on the theoretical study of ultrasonic cavitation, some physical parameters of fluid,sound field parameter and other factors influencing ultrasonic cavitation are reserched and simulated by using matlab language. The time spent by cavitation bubble collapse and the maximal temperature,the maximal pressure while the collapse is occured are discussed. The result shows that the greater of the initial radius of the cavitation bubbles,the smaller of the threshold of the sound pressure; lower temperature and lower frequency of the ultrasonic make cavitation effect more easy; higher amplitude of sound pressure of the ultrasonic can intensify cavitation bubbles′activity; the time spent by cavitation bubbles′collapse increases with that of the vapor pressure of cavitation bubbles; the maximum temperature inside cavitation bubble when it collapse increases linearly with that of the gas′s γ, but the maximum pressure inside cavitation bubble decreases. This work provides a basis for the study and the application of ultrasonic cavitation.
