Planar laser induced fluorescence imaging of bubble formation

Marcus Fedrizzi, Julio Soria

Research output: Chapter in Book/Report/Conference proceedingConference PaperResearchpeer-review

Abstract

A slowly forming underwater gas bubble will grow, form a neck and detach when the neck collapses, emitting a pulse of sound. During the late stage of the neck collapse the acoustic pulse displays a rarefaction and the acoustic compression begins shortly after detachment. This compression appears to coincide with the formation of an internal jet inside the bubble and an understanding of the behaviour of the bubble internal jet is sought in order to understand the origin of the acoustic emission. In this study time resolved high speed imaging of the bubble detachment process has been undertaken using planar laser induced fluorescence (PLIF) illumination. From these images the internal jet development and evolution are investigated as well as the effect of the jet on the instantaneous bubble volume. The link between the internal jet and the surface waves on the bubble is also investigated for insight on their contribution to bubble sound emission.

Original languageEnglish
Title of host publication43rd International Congress on Noise Control Engineering (Internoise 2014) - Improving the World Through Noise Control
Subtitle of host publicationMelbourne, Australia; 16-19 November 2014
EditorsJohn Davey, Charles Don, Terry McMin, Liz Dowsett, Norm Broner, Marion Burgess
Place of PublicationMagill North, SA, Australia
PublisherAustralian Acoustical Society
Pages3178-3184
Number of pages7
ISBN (Electronic)9780909882037
ISBN (Print)9781634398091
Publication statusPublished - 2014
EventInternational Congress on Noise Control Engineering 2014: Improving the World Through Noise Control - Melbourne, Australia
Duration: 16 Nov 201419 Nov 2014
Conference number: 43rd

Conference

ConferenceInternational Congress on Noise Control Engineering 2014
Abbreviated titleINTERNOISE 2014
CountryAustralia
CityMelbourne
Period16/11/1419/11/14

Keywords

  • Bubble
  • Generation
  • Sound

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