Modeling and experimental analysis of acoustic cavitation bubbles for Burst Wave Lithotripsy

9th International Symposium on Cavitation

Maeda, Kazuki^1 ; Kreider, Wayne^2 ; Maxwell, Adam^2,3 ; Cunitz, Bryan^2 ; Colonius, Tim^1 ; Bailey, Michael^2,3

Devision of Engineering and Applied Science, 1200 E California Blvd, Pasadena

CA

91125, United States^1

Center for Industrial and Medical Ultrasound, Applied Physics Laboratory, University of Washington, 1013 NE 40th St, Seattle

WA

98105, United States^2

Department of Urology, University of Washington, School of Medicine, 1959 NE Pacific St, Seattle

WA

98195, United States^3

关键词: Acoustic cavitations;    B-Mode imaging;    Cavitation bubble;    Experimental analysis;    Focused ultrasound;    Negative pressures;    Pressure field;    Single bubbles;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/656/1/012027/pdf
DOI  :  10.1088/1742-6596/656/1/012027

来源: IOP

【 摘 要 】

Cavitation bubbles initiated by focused ultrasound waves are investigated through experiments and modeling. Pulses of focused ultrasound with a frequency of 335 kHz and a peak negative pressure of 8 MPa is generated in a water tank by a piezoelectric transducer to initiate cavitation. The pressure field is modeled by solving the Euler equations and used to simulate single bubble oscillation. The characteristics of cavitation bubbles observed by highspeed photography qualitatively agree with the simulation results. Finally, bubble clouds are captured using acoustic B-mode imaging that works synchronized with high-speed photography.