Spontaneous orbiting of two spheres levitated in a vibrated liquid
In the absence of gravity, particles can form a suspension in a liquid irrespective of the difference in density between the solid and the liquid. If such a suspension is subjected to vibration there is relative motion between the particles and the fluid which can lead to self-organization and patte...
| Main Authors: | , , , , |
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| Format: | Article |
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American Physical Society
2013
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| Online Access: | https://eprints.nottingham.ac.uk/42085/ |
| _version_ | 1848796414982750208 |
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| author | Pacheco Martinez, H.A. Liao, L. Hill, R.J.A. Swift, Michael R. Bowley, R.M. |
| author_facet | Pacheco Martinez, H.A. Liao, L. Hill, R.J.A. Swift, Michael R. Bowley, R.M. |
| author_sort | Pacheco Martinez, H.A. |
| building | Nottingham Research Data Repository |
| collection | Online Access |
| description | In the absence of gravity, particles can form a suspension in a liquid irrespective of the difference in density between the solid and the liquid. If such a suspension is subjected to vibration there is relative motion between the particles and the fluid which can lead to self-organization and pattern formation. Here we describe experiments carried out to investigate the behavior of two identical spheres suspended magnetically in a fluid, mimicking weightless conditions. Under vibration the spheres mutually attract and, for sufficiently large vibration amplitudes, the spheres are observed to spontaneously orbit each other. The collapse of the experimental data onto a single curve indicates that the instability occurs at a critical value of the streaming Reynolds number. Simulations repro- duce the observed behaviour qualitatively and quantitatively, and are used to identify the features of the flow that are responsible for this instability. |
| first_indexed | 2025-11-14T19:47:37Z |
| format | Article |
| id | nottingham-42085 |
| institution | University of Nottingham Malaysia Campus |
| institution_category | Local University |
| last_indexed | 2025-11-14T19:47:37Z |
| publishDate | 2013 |
| publisher | American Physical Society |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | nottingham-420852020-05-04T16:36:29Z https://eprints.nottingham.ac.uk/42085/ Spontaneous orbiting of two spheres levitated in a vibrated liquid Pacheco Martinez, H.A. Liao, L. Hill, R.J.A. Swift, Michael R. Bowley, R.M. In the absence of gravity, particles can form a suspension in a liquid irrespective of the difference in density between the solid and the liquid. If such a suspension is subjected to vibration there is relative motion between the particles and the fluid which can lead to self-organization and pattern formation. Here we describe experiments carried out to investigate the behavior of two identical spheres suspended magnetically in a fluid, mimicking weightless conditions. Under vibration the spheres mutually attract and, for sufficiently large vibration amplitudes, the spheres are observed to spontaneously orbit each other. The collapse of the experimental data onto a single curve indicates that the instability occurs at a critical value of the streaming Reynolds number. Simulations repro- duce the observed behaviour qualitatively and quantitatively, and are used to identify the features of the flow that are responsible for this instability. American Physical Society 2013-04-11 Article PeerReviewed Pacheco Martinez, H.A., Liao, L., Hill, R.J.A., Swift, Michael R. and Bowley, R.M. (2013) Spontaneous orbiting of two spheres levitated in a vibrated liquid. Physical Review Letters, 110 (15). 154501/1-154501/5. ISSN 1079-7114 https://journals.aps.org/prl/abstract/10.1103/PhysRevLett.110.154501 doi:10.1103/PhysRevLett.110.154501 doi:10.1103/PhysRevLett.110.154501 |
| spellingShingle | Pacheco Martinez, H.A. Liao, L. Hill, R.J.A. Swift, Michael R. Bowley, R.M. Spontaneous orbiting of two spheres levitated in a vibrated liquid |
| title | Spontaneous orbiting of two spheres levitated in a vibrated liquid |
| title_full | Spontaneous orbiting of two spheres levitated in a vibrated liquid |
| title_fullStr | Spontaneous orbiting of two spheres levitated in a vibrated liquid |
| title_full_unstemmed | Spontaneous orbiting of two spheres levitated in a vibrated liquid |
| title_short | Spontaneous orbiting of two spheres levitated in a vibrated liquid |
| title_sort | spontaneous orbiting of two spheres levitated in a vibrated liquid |
| url | https://eprints.nottingham.ac.uk/42085/ https://eprints.nottingham.ac.uk/42085/ https://eprints.nottingham.ac.uk/42085/ |