Cavitation structures formed during the rebound of a sphere from a wetted surface

Handle URI:
http://hdl.handle.net/10754/561628
Title:
Cavitation structures formed during the rebound of a sphere from a wetted surface
Authors:
Marston, Jeremy; Wang, Yong; Ng, Waikiong; Tan, Reginald; Thoroddsen, Sigurdur T. ( 0000-0001-6997-4311 )
Abstract:
We use high-speed imaging to observe the dynamics of cavitation, caused by the impact and subsequent rebound of a sphere from a solid surface covered with a thin layer of highly viscous liquid. We note marked qualitative differences between the cavitation structures with increase in viscosity, as well as between Newtonian and non-Newtonian liquids. The patterns observed are quite unexpected and intricate, appearing in concentric ring formations around the site of impact. In all cases, we identify a distinct radius from which the primary bubbles emanate. This radius is modelled with a modified form of Hertz contact theory. Within this radius, we show that some fine cavitation structure may exist or that it may be one large cavitation bubble. For the non-Newtonian fluids, we observe foam-like structures extending radially with diminishing bubble sizes with increase in radial position. Whereas for the Newtonian fluids, the opposite trend is observed with increasing bubble size for increasing radial position. Finally, we compare our experimental observations of cavitation to the maximum tension criterion proposed by Joseph (J Fluid Mech 366:367-378, 1998) showing that this provides the lower limit for the onset of cavitation in our experiments. © 2010 Springer-Verlag.
KAUST Department:
Physical Sciences and Engineering (PSE) Division; Mechanical Engineering Program; High-Speed Fluids Imaging Laboratory
Publisher:
Springer Verlag
Journal:
Experiments in Fluids
Issue Date:
28-Sep-2010
DOI:
10.1007/s00348-010-0979-9
Type:
Article
ISSN:
07234864
Sponsors:
This work was initiated while W. Yong was attached to ICES from NUS during an undergraduate industrial attachment scheme under J.O. Marston. The work was supported by the Science and Engineering Research Council of A*STAR (Agency for Science, Technology and Research), Singapore. The authors would like to thank Ng Junwei for technical support and Professors T. G. Etoh & K. Takehara at Kinki University for use of their laboratory for some early experiments in this work.
Appears in Collections:
Articles; Physical Sciences and Engineering (PSE) Division; Mechanical Engineering Program

Full metadata record

DC FieldValue Language
dc.contributor.authorMarston, Jeremyen
dc.contributor.authorWang, Yongen
dc.contributor.authorNg, Waikiongen
dc.contributor.authorTan, Reginalden
dc.contributor.authorThoroddsen, Sigurdur T.en
dc.date.accessioned2015-08-03T09:00:46Zen
dc.date.available2015-08-03T09:00:46Zen
dc.date.issued2010-09-28en
dc.identifier.issn07234864en
dc.identifier.doi10.1007/s00348-010-0979-9en
dc.identifier.urihttp://hdl.handle.net/10754/561628en
dc.description.abstractWe use high-speed imaging to observe the dynamics of cavitation, caused by the impact and subsequent rebound of a sphere from a solid surface covered with a thin layer of highly viscous liquid. We note marked qualitative differences between the cavitation structures with increase in viscosity, as well as between Newtonian and non-Newtonian liquids. The patterns observed are quite unexpected and intricate, appearing in concentric ring formations around the site of impact. In all cases, we identify a distinct radius from which the primary bubbles emanate. This radius is modelled with a modified form of Hertz contact theory. Within this radius, we show that some fine cavitation structure may exist or that it may be one large cavitation bubble. For the non-Newtonian fluids, we observe foam-like structures extending radially with diminishing bubble sizes with increase in radial position. Whereas for the Newtonian fluids, the opposite trend is observed with increasing bubble size for increasing radial position. Finally, we compare our experimental observations of cavitation to the maximum tension criterion proposed by Joseph (J Fluid Mech 366:367-378, 1998) showing that this provides the lower limit for the onset of cavitation in our experiments. © 2010 Springer-Verlag.en
dc.description.sponsorshipThis work was initiated while W. Yong was attached to ICES from NUS during an undergraduate industrial attachment scheme under J.O. Marston. The work was supported by the Science and Engineering Research Council of A*STAR (Agency for Science, Technology and Research), Singapore. The authors would like to thank Ng Junwei for technical support and Professors T. G. Etoh & K. Takehara at Kinki University for use of their laboratory for some early experiments in this work.en
dc.publisherSpringer Verlagen
dc.titleCavitation structures formed during the rebound of a sphere from a wetted surfaceen
dc.typeArticleen
dc.contributor.departmentPhysical Sciences and Engineering (PSE) Divisionen
dc.contributor.departmentMechanical Engineering Programen
dc.contributor.departmentHigh-Speed Fluids Imaging Laboratoryen
dc.identifier.journalExperiments in Fluidsen
dc.contributor.institutionA-STAR Institute of Chemical and Engineering Sciences, 1 Pesek Road, Jurong Island, Singapore 627833, Singaporeen
dc.contributor.institutionDepartment of Chemical and Biomolecular Engineering, National University of Singapore, 4 Engineering Drive 4, Singapore 117576, Singaporeen
kaust.authorMarston, Jeremyen
kaust.authorThoroddsen, Sigurdur T.en
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