Spray and microjets produced by focusing a laser pulse into a hemispherical drop

Handle URI:
http://hdl.handle.net/10754/552735
Title:
Spray and microjets produced by focusing a laser pulse into a hemispherical drop
Authors:
Thoroddsen, Sigurdur T. ( 0000-0001-6997-4311 ) ; Takehara, K.; Etoh, T. G.; Ohl, C.-D.
Abstract:
We use high-speed video imaging to study laser disruption of the free surface of a hemispheric drop. The drop sits on a glass surface and the Nd:YAG (yttrium aluminum garnet) laser pulse propagates through the drop and is focused near the free surface from below. We focus on the evolution of the cylindrical liquid sheet and spray which emerges out of the drop and resembles typical impact crowns. The tip of the sheet emerges at velocities over 1 km/s. The tip of the crown breaks up into fine spray some of which is sucked back into the growing cavity at about 100 m/s. We measure the size of the typical spray droplets to be about 3 μm. We also show the formation of fine microjets, which are produced when the laser is focused inside the drop and the shock front hits small bubbles sitting under the free surface. For water these microjets are 5–50 μm in diameter and exit at 100–250 m/s. For higher viscositydrops, these jets can emerge at over 500 m/s.
KAUST Department:
Physical Sciences and Engineering (PSE) Division
Citation:
Spray and microjets produced by focusing a laser pulse into a hemispherical drop 2009, 21 (11):112101 Physics of Fluids
Journal:
Physics of Fluids
Issue Date:
2-Nov-2009
DOI:
10.1063/1.3253394
Type:
Article
ISSN:
10706631
Additional Links:
http://scitation.aip.org/content/aip/journal/pof2/21/11/10.1063/1.3253394
Appears in Collections:
Articles; Physical Sciences and Engineering (PSE) Division

Full metadata record

DC FieldValue Language
dc.contributor.authorThoroddsen, Sigurdur T.en
dc.contributor.authorTakehara, K.en
dc.contributor.authorEtoh, T. G.en
dc.contributor.authorOhl, C.-D.en
dc.date.accessioned2015-05-14T06:26:58Zen
dc.date.available2015-05-14T06:26:58Zen
dc.date.issued2009-11-02en
dc.identifier.citationSpray and microjets produced by focusing a laser pulse into a hemispherical drop 2009, 21 (11):112101 Physics of Fluidsen
dc.identifier.issn10706631en
dc.identifier.doi10.1063/1.3253394en
dc.identifier.urihttp://hdl.handle.net/10754/552735en
dc.description.abstractWe use high-speed video imaging to study laser disruption of the free surface of a hemispheric drop. The drop sits on a glass surface and the Nd:YAG (yttrium aluminum garnet) laser pulse propagates through the drop and is focused near the free surface from below. We focus on the evolution of the cylindrical liquid sheet and spray which emerges out of the drop and resembles typical impact crowns. The tip of the sheet emerges at velocities over 1 km/s. The tip of the crown breaks up into fine spray some of which is sucked back into the growing cavity at about 100 m/s. We measure the size of the typical spray droplets to be about 3 μm. We also show the formation of fine microjets, which are produced when the laser is focused inside the drop and the shock front hits small bubbles sitting under the free surface. For water these microjets are 5–50 μm in diameter and exit at 100–250 m/s. For higher viscositydrops, these jets can emerge at over 500 m/s.en
dc.relation.urlhttp://scitation.aip.org/content/aip/journal/pof2/21/11/10.1063/1.3253394en
dc.rightsArchived with thanks to Physics of Fluidsen
dc.titleSpray and microjets produced by focusing a laser pulse into a hemispherical dropen
dc.typeArticleen
dc.contributor.departmentPhysical Sciences and Engineering (PSE) Divisionen
dc.identifier.journalPhysics of Fluidsen
dc.eprint.versionPublisher's Version/PDFen
dc.contributor.institutionDepartment of Civil and Environmental Engineering, Kinki University, Higashi-Osaka 577-8502, Japanen
dc.contributor.institutionSchool of Physical and Mathematical Sciences, Division of Physics and Applied Physics, Nanyang Technological University, 637371 Singaporeen
kaust.authorThoroddsen, Sigurdur T.en
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