Instability of a swirling bubble ring
A toroidal bubble or a cylindrical gas jet are known to be subjected to the Rayleigh–Plateau instability. Air bubble rings produced by beluga whales and dolphins however are observed that remain stable for long times. In the present work, we analyse the generation of such toroidal bubbles via numeri...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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Académie des sciences
2020-11-01
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| Series: | Comptes Rendus. Mécanique |
| Subjects: | |
| Online Access: | https://comptes-rendus.academie-sciences.fr/mecanique/articles/10.5802/crmeca.22/ |
| _version_ | 1827785161006120960 |
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| author | Xu, Yonghui Delbende, Ivan Fuster, Daniel Rossi, Maurice |
| author_facet | Xu, Yonghui Delbende, Ivan Fuster, Daniel Rossi, Maurice |
| author_sort | Xu, Yonghui |
| collection | DOAJ |
| description | A toroidal bubble or a cylindrical gas jet are known to be subjected to the Rayleigh–Plateau instability. Air bubble rings produced by beluga whales and dolphins however are observed that remain stable for long times. In the present work, we analyse the generation of such toroidal bubbles via numerical simulations, in particular how the process depends on surface tension. Their stability properties are then briefly analysed. For the estimated Reynolds and Weber numbers relative to the bubbles produced by these animals, the presence of a vortex inside and around the bubble is found to strongly stabilize the Rayleigh–Plateau instability. |
| first_indexed | 2024-03-11T16:15:08Z |
| format | Article |
| id | doaj.art-5717bc4c6b384dc0be3e943438ffa788 |
| institution | Directory Open Access Journal |
| issn | 1873-7234 |
| language | English |
| last_indexed | 2024-03-11T16:15:08Z |
| publishDate | 2020-11-01 |
| publisher | Académie des sciences |
| record_format | Article |
| series | Comptes Rendus. Mécanique |
| spelling | doaj.art-5717bc4c6b384dc0be3e943438ffa7882023-10-24T14:20:55ZengAcadémie des sciencesComptes Rendus. Mécanique1873-72342020-11-013486-751953510.5802/crmeca.2210.5802/crmeca.22Instability of a swirling bubble ringXu, Yonghui0Delbende, Ivan1Fuster, Daniel2Rossi, Maurice3Sorbonne Université, UMR 7190, Institut Jean Le Rond d’Alembert, 75005 Paris, FranceLIMSI, CNRS, Université Paris-Saclay, rue du Belvédère, 91405 Orsay, France; Sorbonne Université, UFR d’Ingénierie, 4 place Jussieu, 75005 Paris, FranceCNRS, UMR 7190, Institut Jean Le Rond d’Alembert, 75005 Paris, FranceCNRS, UMR 7190, Institut Jean Le Rond d’Alembert, 75005 Paris, FranceA toroidal bubble or a cylindrical gas jet are known to be subjected to the Rayleigh–Plateau instability. Air bubble rings produced by beluga whales and dolphins however are observed that remain stable for long times. In the present work, we analyse the generation of such toroidal bubbles via numerical simulations, in particular how the process depends on surface tension. Their stability properties are then briefly analysed. For the estimated Reynolds and Weber numbers relative to the bubbles produced by these animals, the presence of a vortex inside and around the bubble is found to strongly stabilize the Rayleigh–Plateau instability.https://comptes-rendus.academie-sciences.fr/mecanique/articles/10.5802/crmeca.22/InstabilityVortex ringTwo-phase flowRayleigh–PlateauDirect numerical simulation |
| spellingShingle | Xu, Yonghui Delbende, Ivan Fuster, Daniel Rossi, Maurice Instability of a swirling bubble ring Comptes Rendus. Mécanique Instability Vortex ring Two-phase flow Rayleigh–Plateau Direct numerical simulation |
| title | Instability of a swirling bubble ring |
| title_full | Instability of a swirling bubble ring |
| title_fullStr | Instability of a swirling bubble ring |
| title_full_unstemmed | Instability of a swirling bubble ring |
| title_short | Instability of a swirling bubble ring |
| title_sort | instability of a swirling bubble ring |
| topic | Instability Vortex ring Two-phase flow Rayleigh–Plateau Direct numerical simulation |
| url | https://comptes-rendus.academie-sciences.fr/mecanique/articles/10.5802/crmeca.22/ |
| work_keys_str_mv | AT xuyonghui instabilityofaswirlingbubblering AT delbendeivan instabilityofaswirlingbubblering AT fusterdaniel instabilityofaswirlingbubblering AT rossimaurice instabilityofaswirlingbubblering |