Investigation of interaction effects on dual-frequency driven cavitation dynamics in a two-bubble system
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...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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Elsevier
2023-10-01
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| Series: | Ultrasonics Sonochemistry |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S1350417723002985 |
| _version_ | 1797690211109437440 |
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| author | Dui Qin Qianru Yang Shuang Lei Jia Fu Xiaojuan Ji Xiuxin Wang |
| author_facet | Dui Qin Qianru Yang Shuang Lei Jia Fu Xiaojuan Ji Xiuxin Wang |
| author_sort | Dui Qin |
| collection | DOAJ |
| description | 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., d0 < 100 μm). For the influences of the dual-frequency excitation, the results show that the bubbles can achieve enhanced harmonic and/or subharmonic oscillations as the frequency combinations with small frequency differences (e.g., Δf < 0.2 MHz) close to the corresponding resonance frequencies of bubbles, and the interaction effects are consequently intensified. Similarly, the bubble oscillations and the interaction effects can also be enhanced as the acoustic pressure amplitude of each frequency component is equal and the pressure amplitude pA increases. Above a pressure threshold (pA = 215 kPa), a larger bubble undergoes period 2 (P2) oscillations, which can force a smaller bubble to change its oscillation pattern from period 1 (P1) into P2 oscillations. In addition, it is found that the medium viscosity dampens the bubble oscillations while the medium elasticity affects the bubble resonances, accordingly exhibiting stronger interaction effects at smaller viscosities (e.g., μ < 4 mPa·s) or certain elasticities (approximately G = 70–120 kPa, G = 160–200 kPa and G = 640–780 kPa) at which the bubble resonances occur. The study can contribute to a better understanding of the complex dynamic behaviors of interacting cavitation bubbles in viscoelastic tissues for high efficient cavitation-mediated biomedical applications using dual-frequency ultrasound. |
| first_indexed | 2024-03-12T01:57:17Z |
| format | Article |
| id | doaj.art-8510e4bf3acc4feb8b14fbcbdfcb4848 |
| institution | Directory Open Access Journal |
| issn | 1350-4177 |
| language | English |
| last_indexed | 2024-03-12T01:57:17Z |
| publishDate | 2023-10-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Ultrasonics Sonochemistry |
| spelling | doaj.art-8510e4bf3acc4feb8b14fbcbdfcb48482023-09-08T04:33:02ZengElsevierUltrasonics Sonochemistry1350-41772023-10-0199106586Investigation of interaction effects on dual-frequency driven cavitation dynamics in a two-bubble systemDui Qin0Qianru Yang1Shuang Lei2Jia Fu3Xiaojuan Ji4Xiuxin Wang5Chongqing Engineering Research Center of Medical Electronics and Information Technology, Department of Biomedical Engineering, School of Bioinformatics, Chongqing University of Posts and Telecommunications, Chongqing, People’s Republic of China; Postdoctoral Workstation of Chongqing General Hospital, Chongqing, People’s Republic of China; Corresponding authors.Chongqing Engineering Research Center of Medical Electronics and Information Technology, Department of Biomedical Engineering, School of Bioinformatics, Chongqing University of Posts and Telecommunications, Chongqing, People’s Republic of ChinaChongqing Engineering Research Center of Medical Electronics and Information Technology, Department of Biomedical Engineering, School of Bioinformatics, Chongqing University of Posts and Telecommunications, Chongqing, People’s Republic of ChinaChongqing Engineering Research Center of Medical Electronics and Information Technology, Department of Biomedical Engineering, School of Bioinformatics, Chongqing University of Posts and Telecommunications, Chongqing, People’s Republic of ChinaPostdoctoral Workstation of Chongqing General Hospital, Chongqing, People’s Republic of China; Department of Ultrasound, Chongqing General Hospital, Chongqing, People’s Republic of China; Corresponding authors.Chongqing Engineering Research Center of Medical Electronics and Information Technology, Department of Biomedical Engineering, School of Bioinformatics, Chongqing University of Posts and Telecommunications, Chongqing, People’s Republic of China; Corresponding authors.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., d0 < 100 μm). For the influences of the dual-frequency excitation, the results show that the bubbles can achieve enhanced harmonic and/or subharmonic oscillations as the frequency combinations with small frequency differences (e.g., Δf < 0.2 MHz) close to the corresponding resonance frequencies of bubbles, and the interaction effects are consequently intensified. Similarly, the bubble oscillations and the interaction effects can also be enhanced as the acoustic pressure amplitude of each frequency component is equal and the pressure amplitude pA increases. Above a pressure threshold (pA = 215 kPa), a larger bubble undergoes period 2 (P2) oscillations, which can force a smaller bubble to change its oscillation pattern from period 1 (P1) into P2 oscillations. In addition, it is found that the medium viscosity dampens the bubble oscillations while the medium elasticity affects the bubble resonances, accordingly exhibiting stronger interaction effects at smaller viscosities (e.g., μ < 4 mPa·s) or certain elasticities (approximately G = 70–120 kPa, G = 160–200 kPa and G = 640–780 kPa) at which the bubble resonances occur. The study can contribute to a better understanding of the complex dynamic behaviors of interacting cavitation bubbles in viscoelastic tissues for high efficient cavitation-mediated biomedical applications using dual-frequency ultrasound.http://www.sciencedirect.com/science/article/pii/S1350417723002985Acoustic cavitationDual-frequency excitationBubble dynamicsInter-bubble interactionsViscoelasticity |
| spellingShingle | Dui Qin Qianru Yang Shuang Lei Jia Fu Xiaojuan Ji Xiuxin Wang Investigation of interaction effects on dual-frequency driven cavitation dynamics in a two-bubble system Ultrasonics Sonochemistry Acoustic cavitation Dual-frequency excitation Bubble dynamics Inter-bubble interactions Viscoelasticity |
| title | Investigation of interaction effects on dual-frequency driven cavitation dynamics in a two-bubble system |
| title_full | Investigation of interaction effects on dual-frequency driven cavitation dynamics in a two-bubble system |
| title_fullStr | Investigation of interaction effects on dual-frequency driven cavitation dynamics in a two-bubble system |
| title_full_unstemmed | Investigation of interaction effects on dual-frequency driven cavitation dynamics in a two-bubble system |
| title_short | Investigation of interaction effects on dual-frequency driven cavitation dynamics in a two-bubble system |
| title_sort | investigation of interaction effects on dual frequency driven cavitation dynamics in a two bubble system |
| topic | Acoustic cavitation Dual-frequency excitation Bubble dynamics Inter-bubble interactions Viscoelasticity |
| url | http://www.sciencedirect.com/science/article/pii/S1350417723002985 |
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