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Investigation of noninertial cavitation produced by an ultrasonic horn

Investigation of noninertial cavitation produced by an ultrasonic horn
Investigation of noninertial cavitation produced by an ultrasonic horn
This paper reports on noninertial cavitation that occurs beyond the zone close to the horn tip to which the inertial cavitation is confined. The noninertial cavitation is characterized by collating the data from a range of measurements of bubbles trapped on a solid surface in this noninertial zone. Specifically, the electrochemical measurement of mass transfer to an electrode is compared with high-speed video of the bubble oscillation. This gas bubble is shown to be a “noninertial” event by electrochemical surface erosion measurements and “ring-down” experiments showing the activity and motion of the bubble as the sound excitation was terminated. These measurements enable characterization of the complex environment produced below an operating ultrasonic horn outside of the region where inertial collapse can be detected. The extent to which solid boundaries in the liquid cause the frequencies and shapes of oscillatory modes on the bubble wall to differ from their free field values is discussed.
0001-4966
3297-3308
Birkin, Peter R.
ba466560-f27c-418d-89fc-67ea4f81d0a7
Offin, Douglas G.
e7cbc36d-c3ae-431b-9f7a-8c38ccb53579
Vian, Christopher J.B.
c5ca4c67-5a34-475e-b99b-04593f9c6cc9
Leighton, T.G.
3e5262ce-1d7d-42eb-b013-fcc5c286bbae
Maksimov, Alexey O.
ee599fdf-28e9-460e-8175-21cdaa7f2f16
Birkin, Peter R.
ba466560-f27c-418d-89fc-67ea4f81d0a7
Offin, Douglas G.
e7cbc36d-c3ae-431b-9f7a-8c38ccb53579
Vian, Christopher J.B.
c5ca4c67-5a34-475e-b99b-04593f9c6cc9
Leighton, T.G.
3e5262ce-1d7d-42eb-b013-fcc5c286bbae
Maksimov, Alexey O.
ee599fdf-28e9-460e-8175-21cdaa7f2f16

Birkin, Peter R., Offin, Douglas G., Vian, Christopher J.B., Leighton, T.G. and Maksimov, Alexey O. (2011) Investigation of noninertial cavitation produced by an ultrasonic horn. Journal of the Acoustical Society of America, 130 (5), 3297-3308. (doi:10.1121/1.3650537).

Record type: Article

Abstract

This paper reports on noninertial cavitation that occurs beyond the zone close to the horn tip to which the inertial cavitation is confined. The noninertial cavitation is characterized by collating the data from a range of measurements of bubbles trapped on a solid surface in this noninertial zone. Specifically, the electrochemical measurement of mass transfer to an electrode is compared with high-speed video of the bubble oscillation. This gas bubble is shown to be a “noninertial” event by electrochemical surface erosion measurements and “ring-down” experiments showing the activity and motion of the bubble as the sound excitation was terminated. These measurements enable characterization of the complex environment produced below an operating ultrasonic horn outside of the region where inertial collapse can be detected. The extent to which solid boundaries in the liquid cause the frequencies and shapes of oscillatory modes on the bubble wall to differ from their free field values is discussed.

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Published date: September 2011
Organisations: Acoustics Group

Identifiers

Local EPrints ID: 203935
URI: https://eprints.soton.ac.uk/id/eprint/203935
ISSN: 0001-4966
PURE UUID: 33e2112e-2f86-436c-a7b4-4b5d6782f53c
ORCID for Peter R. Birkin: ORCID iD orcid.org/0000-0002-6656-4074
ORCID for T.G. Leighton: ORCID iD orcid.org/0000-0002-1649-8750

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Date deposited: 22 Nov 2011 14:44
Last modified: 19 Nov 2019 01:59

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