Satellite Formation during Coalescence of Unequal Size Drops

Handle URI:
http://hdl.handle.net/10754/554123
Title:
Satellite Formation during Coalescence of Unequal Size Drops
Authors:
Zhang, F. H.; Li, E. Q.; Thoroddsen, Sigurdur T. ( 0000-0001-6997-4311 )
Abstract:
The coalescence of a drop with a flat liquid surface pinches off a satellite from its top, in the well-known coalescence cascade, whereas the coalescence of two equally sized drops does not appear to leave such a satellite. Herein we perform experiments to identify the critical diameter ratio of two drops, above which a satellite is produced during their coalescence. We find that the critical parent ratio is as small as 1.55, but grows monotonically with the Ohnesorge number. The daughter size is typically about 50% of the mother drop. However, we have identified novel pinch-off dynamics close to the critical size ratio, where the satellite does not fully separate, but rather goes directly into a second stage of the coalescence cascade, thus generating a much smaller satellite droplet.
KAUST Department:
Physical Sciences and Engineering (PSE) Division
Citation:
Satellite Formation during Coalescence of Unequal Size Drops 2009, 102 (10) Physical Review Letters
Publisher:
American Physical Society (APS)
Journal:
Physical Review Letters
Issue Date:
12-Mar-2009
DOI:
10.1103/PhysRevLett.102.104502
Type:
Article
ISSN:
0031-9007; 1079-7114
Additional Links:
http://link.aps.org/doi/10.1103/PhysRevLett.102.104502
Appears in Collections:
Articles; Physical Sciences and Engineering (PSE) Division; Physical Sciences and Engineering (PSE) Division

Full metadata record

DC FieldValue Language
dc.contributor.authorZhang, F. H.en
dc.contributor.authorLi, E. Q.en
dc.contributor.authorThoroddsen, Sigurdur T.en
dc.date.accessioned2015-05-18T21:55:08Zen
dc.date.available2015-05-18T21:55:08Zen
dc.date.issued2009-03-12en
dc.identifier.citationSatellite Formation during Coalescence of Unequal Size Drops 2009, 102 (10) Physical Review Lettersen
dc.identifier.issn0031-9007en
dc.identifier.issn1079-7114en
dc.identifier.doi10.1103/PhysRevLett.102.104502en
dc.identifier.urihttp://hdl.handle.net/10754/554123en
dc.description.abstractThe coalescence of a drop with a flat liquid surface pinches off a satellite from its top, in the well-known coalescence cascade, whereas the coalescence of two equally sized drops does not appear to leave such a satellite. Herein we perform experiments to identify the critical diameter ratio of two drops, above which a satellite is produced during their coalescence. We find that the critical parent ratio is as small as 1.55, but grows monotonically with the Ohnesorge number. The daughter size is typically about 50% of the mother drop. However, we have identified novel pinch-off dynamics close to the critical size ratio, where the satellite does not fully separate, but rather goes directly into a second stage of the coalescence cascade, thus generating a much smaller satellite droplet.en
dc.publisherAmerican Physical Society (APS)en
dc.relation.urlhttp://link.aps.org/doi/10.1103/PhysRevLett.102.104502en
dc.rightsArchived with thanks to Physical Review Lettersen
dc.titleSatellite Formation during Coalescence of Unequal Size Dropsen
dc.typeArticleen
dc.contributor.departmentPhysical Sciences and Engineering (PSE) Divisionen
dc.identifier.journalPhysical Review Lettersen
dc.eprint.versionPublisher's Version/PDFen
dc.contributor.institutionMechanical Engineering, National University of Singapore, 9 Engineering Drive 1, Singapore 117576en
kaust.authorThoroddsen, Sigurdur T.en
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