Vortex-ring-induced large bubble entrainment during drop impact

Handle URI:
http://hdl.handle.net/10754/608614
Title:
Vortex-ring-induced large bubble entrainment during drop impact
Authors:
Thoraval, Marie-Jean; Li, Yangfan; Thoroddsen, Sigurdur T. ( 0000-0001-6997-4311 )
Abstract:
For a limited set of impact conditions, a drop impacting onto a pool can entrap an air bubble as large as its own size. The subsequent rise and rupture of this large bubble plays an important role in aerosol formation and gas transport at the air-sea interface. The large bubble is formed when the impact crater closes up near the pool surface and is known to occur only for drops that are prolate at impact. Herein we use experiments and numerical simulations to show that a concentrated vortex ring, produced in the neck between the drop and the pool, controls the crater deformations and pinchoff. However, it is not the strongest vortex rings that are responsible for the large bubbles, as they interact too strongly with the pool surface and self-destruct. Rather, it is somewhat weaker vortices that can deform the deeper craters, which manage to pinch off the large bubbles. These observations also explain why the strongest and most penetrating vortex rings emerging from drop impacts are not produced by oblate drops but by more prolate drop shapes, as had been observed in previous experiments.
KAUST Department:
Physical Sciences and Engineering (PSE) Division; Clean Combustion Research Center
Citation:
Vortex-ring-induced large bubble entrainment during drop impact 2016, 93 (3) Physical Review E
Publisher:
American Physical Society (APS)
Journal:
Physical Review E
Issue Date:
29-Mar-2016
DOI:
10.1103/PhysRevE.93.033128
Type:
Article
ISSN:
2470-0045; 2470-0053
Sponsors:
The research reported in this publication was supported by King Abdullah University of Science and Technology (KAUST).
Additional Links:
http://link.aps.org/doi/10.1103/PhysRevE.93.033128
Appears in Collections:
Articles; Physical Sciences and Engineering (PSE) Division; Clean Combustion Research Center

Full metadata record

DC FieldValue Language
dc.contributor.authorThoraval, Marie-Jeanen
dc.contributor.authorLi, Yangfanen
dc.contributor.authorThoroddsen, Sigurdur T.en
dc.date.accessioned2016-05-08T15:14:36Zen
dc.date.available2016-05-08T15:14:36Zen
dc.date.issued2016-03-29en
dc.identifier.citationVortex-ring-induced large bubble entrainment during drop impact 2016, 93 (3) Physical Review Een
dc.identifier.issn2470-0045en
dc.identifier.issn2470-0053en
dc.identifier.doi10.1103/PhysRevE.93.033128en
dc.identifier.urihttp://hdl.handle.net/10754/608614en
dc.description.abstractFor a limited set of impact conditions, a drop impacting onto a pool can entrap an air bubble as large as its own size. The subsequent rise and rupture of this large bubble plays an important role in aerosol formation and gas transport at the air-sea interface. The large bubble is formed when the impact crater closes up near the pool surface and is known to occur only for drops that are prolate at impact. Herein we use experiments and numerical simulations to show that a concentrated vortex ring, produced in the neck between the drop and the pool, controls the crater deformations and pinchoff. However, it is not the strongest vortex rings that are responsible for the large bubbles, as they interact too strongly with the pool surface and self-destruct. Rather, it is somewhat weaker vortices that can deform the deeper craters, which manage to pinch off the large bubbles. These observations also explain why the strongest and most penetrating vortex rings emerging from drop impacts are not produced by oblate drops but by more prolate drop shapes, as had been observed in previous experiments.en
dc.description.sponsorshipThe research reported in this publication was supported by King Abdullah University of Science and Technology (KAUST).en
dc.language.isoenen
dc.publisherAmerican Physical Society (APS)en
dc.relation.urlhttp://link.aps.org/doi/10.1103/PhysRevE.93.033128en
dc.rightsArchived with thanks to Physical Review E. This article is available under the terms of the Creative Commons Attribution 3.0 License. Further distribution of this work must maintain attribution to the author(s) and the published article’s title, journal citation, and DOI.en
dc.titleVortex-ring-induced large bubble entrainment during drop impacten
dc.typeArticleen
dc.contributor.departmentPhysical Sciences and Engineering (PSE) Divisionen
dc.contributor.departmentClean Combustion Research Centeren
dc.identifier.journalPhysical Review Een
dc.eprint.versionPublisher's Version/PDFen
dc.contributor.institutionPhysics of Fluids Group, Faculty of Science and Technology, Mesa+ Institute, University of Twente, 7500 AE Enschede, The Netherlandsen
dc.contributor.institutionInternational Center for Applied Mechanics, State Key Laboratory for Strength and Vibration of Mechanical Structures, Xi'an Jiaotong University, Xi'an 710049, People's Republic of Chinaen
dc.contributor.institutionMechanical Engineering, National University of Singapore, 9 Engineering Drive 1, Singapore 117576en
dc.contributor.affiliationKing Abdullah University of Science and Technology (KAUST)en
kaust.authorThoraval, Marie-Jeanen
kaust.authorThoroddsen, Sigurdur T.en
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