Translation-deformation coupling effects on the Rayleigh instability of an electrodynamically levitated charged droplet
The breakup pathway of the Rayleigh fission process observed experimentally using high-speed imaging of a charged drop levitated in an AC quadrupole trap is shown to undergo asymmetric breakup by ejecting a jet in the upward direction ((i.e., opposite to the direction of gravity)). To explain this t...
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ftdatacite:10.48550/arxiv.2106.02092 2023-05-15T17:39:56+02:00 Translation-deformation coupling effects on the Rayleigh instability of an electrodynamically levitated charged droplet Gawande, Neha Mayya, Y. S. Thaokar, Rochish 2021 https://dx.doi.org/10.48550/arxiv.2106.02092 https://arxiv.org/abs/2106.02092 unknown arXiv Creative Commons Attribution Non Commercial Share Alike 4.0 International https://creativecommons.org/licenses/by-nc-sa/4.0/legalcode cc-by-nc-sa-4.0 CC-BY-NC-SA Fluid Dynamics physics.flu-dyn FOS Physical sciences Article CreativeWork article Preprint 2021 ftdatacite https://doi.org/10.48550/arxiv.2106.02092 2022-03-10T14:48:18Z The breakup pathway of the Rayleigh fission process observed experimentally using high-speed imaging of a charged drop levitated in an AC quadrupole trap is shown to undergo asymmetric breakup by ejecting a jet in the upward direction ((i.e., opposite to the direction of gravity)). To explain this typical experimental observation, we carry out numerical calculations based on the boundary element method considering inertial droplets levitated electrodynamically using quadrupole electric fields. The simulations show that the gravity-induced downward shift in the equilibrium position of the drop in the trap causes significant, large-amplitude shape oscillations superimposed over the center-of-mass oscillations of the drop. An important observation here is that the shape oscillations due to the applied quadrupole fields, result in sufficient deformations that act as triggers for the onset of the instability below the Rayleigh limit, thereby admitting a sub-critical instability. The center-of-mass oscillations of the droplet within the trap, which follow the applied frequency, are out of phase with the applied AC signal. Thus the combined effect of shape deformations and dynamic position of the drop leads to an asymmetric breakup such that the Rayleigh fission occurs upwards via the ejection of a jet at the north-pole of the deformed drop. : 9 figures, 7 pages Article in Journal/Newspaper North Pole DataCite Metadata Store (German National Library of Science and Technology) North Pole |
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DataCite Metadata Store (German National Library of Science and Technology) |
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topic |
Fluid Dynamics physics.flu-dyn FOS Physical sciences |
spellingShingle |
Fluid Dynamics physics.flu-dyn FOS Physical sciences Gawande, Neha Mayya, Y. S. Thaokar, Rochish Translation-deformation coupling effects on the Rayleigh instability of an electrodynamically levitated charged droplet |
topic_facet |
Fluid Dynamics physics.flu-dyn FOS Physical sciences |
description |
The breakup pathway of the Rayleigh fission process observed experimentally using high-speed imaging of a charged drop levitated in an AC quadrupole trap is shown to undergo asymmetric breakup by ejecting a jet in the upward direction ((i.e., opposite to the direction of gravity)). To explain this typical experimental observation, we carry out numerical calculations based on the boundary element method considering inertial droplets levitated electrodynamically using quadrupole electric fields. The simulations show that the gravity-induced downward shift in the equilibrium position of the drop in the trap causes significant, large-amplitude shape oscillations superimposed over the center-of-mass oscillations of the drop. An important observation here is that the shape oscillations due to the applied quadrupole fields, result in sufficient deformations that act as triggers for the onset of the instability below the Rayleigh limit, thereby admitting a sub-critical instability. The center-of-mass oscillations of the droplet within the trap, which follow the applied frequency, are out of phase with the applied AC signal. Thus the combined effect of shape deformations and dynamic position of the drop leads to an asymmetric breakup such that the Rayleigh fission occurs upwards via the ejection of a jet at the north-pole of the deformed drop. : 9 figures, 7 pages |
format |
Article in Journal/Newspaper |
author |
Gawande, Neha Mayya, Y. S. Thaokar, Rochish |
author_facet |
Gawande, Neha Mayya, Y. S. Thaokar, Rochish |
author_sort |
Gawande, Neha |
title |
Translation-deformation coupling effects on the Rayleigh instability of an electrodynamically levitated charged droplet |
title_short |
Translation-deformation coupling effects on the Rayleigh instability of an electrodynamically levitated charged droplet |
title_full |
Translation-deformation coupling effects on the Rayleigh instability of an electrodynamically levitated charged droplet |
title_fullStr |
Translation-deformation coupling effects on the Rayleigh instability of an electrodynamically levitated charged droplet |
title_full_unstemmed |
Translation-deformation coupling effects on the Rayleigh instability of an electrodynamically levitated charged droplet |
title_sort |
translation-deformation coupling effects on the rayleigh instability of an electrodynamically levitated charged droplet |
publisher |
arXiv |
publishDate |
2021 |
url |
https://dx.doi.org/10.48550/arxiv.2106.02092 https://arxiv.org/abs/2106.02092 |
geographic |
North Pole |
geographic_facet |
North Pole |
genre |
North Pole |
genre_facet |
North Pole |
op_rights |
Creative Commons Attribution Non Commercial Share Alike 4.0 International https://creativecommons.org/licenses/by-nc-sa/4.0/legalcode cc-by-nc-sa-4.0 |
op_rightsnorm |
CC-BY-NC-SA |
op_doi |
https://doi.org/10.48550/arxiv.2106.02092 |
_version_ |
1766140690607112192 |