Dynamics Study on Soft Matter Drop by Ultrasound

In this paper, the motion equation of the bubble radius in the incompatible liquid under the action of ultrasound is derived from the studying of cavitation bubble motion, which provides foundation for the study of the change of the radius of the bubble under the action of ultrasound. The influence of ultrasonic frequency, amplitude of ultrasonic, initial radius and interfacial tension on the change of bubble radius are discussed by using the MATLAB methods.The results show that the smaller of frequency or the higher of ultrasonic pressure magnitude, the movement of droplets is more intense. If ultrasonic pressure magnitude is smaller than the static pressure, the drop will do micro steady vibration at the initial radius. In the case of the initial radius is smaller, the movement of the droplet is more intense, but has very little influence on the last radius of drop. The size of interfacial tension coefficient has little effect on the change droplet radius in ultrasonic field.