Phenomenon of self-oscillation in bubble dynamics: Bouncing acoustic bubbles
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arXiv
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| Auteurs principaux: | , , , , , , |
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| Format: | Preprint |
| Publié: |
2024
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| _version_ | 1866909163484872704 |
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| author | Regnault, Gabriel Doinikov, Alexander A Laloy-Borgna, Gabrielle Mauger, Cyril Blanc-Benon, Philippe Catheline, Stefan Inserra, Claude |
| author_facet | Regnault, Gabriel Doinikov, Alexander A Laloy-Borgna, Gabrielle Mauger, Cyril Blanc-Benon, Philippe Catheline, Stefan Inserra, Claude |
| contents | Self-oscillations underlie many natural phenomena such as heartbeat, ocean waves, and the pulsation of variable stars. From pendulum clocks to the behavior of animal groups, self-oscillation is one of the keys to the understanding of synchronization phenomena and hence the collective behavior of interacting systems. In this study, we consider two closely spaced bubbles pulsating in the kHz range in response to ultrasonic excitation. A translational bouncing motion emerges from their interaction with a much lower frequency than the bubble pulsation frequency. Our analysis reveals that the observed bubble bouncing exhibits the main features of self-oscillation, such as negative damping and the emergence of a limit cycle. These results highlight unexpected nonlinear effects in the field of microbubbles and give insights into the understanding of synchronization in large bubble clouds. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2404_05822 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Phenomenon of self-oscillation in bubble dynamics: Bouncing acoustic bubbles Regnault, Gabriel Doinikov, Alexander A Laloy-Borgna, Gabrielle Mauger, Cyril Blanc-Benon, Philippe Catheline, Stefan Inserra, Claude Fluid Dynamics Self-oscillations underlie many natural phenomena such as heartbeat, ocean waves, and the pulsation of variable stars. From pendulum clocks to the behavior of animal groups, self-oscillation is one of the keys to the understanding of synchronization phenomena and hence the collective behavior of interacting systems. In this study, we consider two closely spaced bubbles pulsating in the kHz range in response to ultrasonic excitation. A translational bouncing motion emerges from their interaction with a much lower frequency than the bubble pulsation frequency. Our analysis reveals that the observed bubble bouncing exhibits the main features of self-oscillation, such as negative damping and the emergence of a limit cycle. These results highlight unexpected nonlinear effects in the field of microbubbles and give insights into the understanding of synchronization in large bubble clouds. |
| title | Phenomenon of self-oscillation in bubble dynamics: Bouncing acoustic bubbles |
| topic | Fluid Dynamics |
| url | https://arxiv.org/abs/2404.05822 |