Portal de Periódicos da CAPES

Investigation of interaction effects on dual-frequency driven cavitation dynamics in a two-bubble system

2023; Elsevier BV; Volume: 99; Linguagem: Inglês

10.1016/j.ultsonch.2023.106586

1873-2828

Dui Qin, Qianru Yang, Shuang Lei, Jia Fu, Xiaojuan Ji, Xiuxin Wang,

Photoacoustic and Ultrasonic Imaging

The cavitation dynamics of a two-bubble system in viscoelastic media excited by dual-frequency ultrasound is studied numerically with a focus on the effects of inter-bubble interactions. Compared to the isolated bubble cases, the enhancement or suppression effects can be exerted on the amplitude and nonlinearity of the bubble oscillations to different degrees. Moreover, the interaction effects are found to be highly sensitive to multiple paramount parameters related to the two-bubble system, the dual-frequency ultrasound and the medium viscoelasticity. Specifically, the larger bubble of a two-bubble system shows a stronger effect on the smaller one, and this effect becomes more pronounced when the larger bubble undergoes harmonic and/or subharmonic resonances as well as the two bubbles get closer (e.g., d