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Cavitation clusters in lipid systems – ring-up, bubble population, and bifurcated streamer lifetime

Cavitation clusters in lipid systems – ring-up, bubble population, and bifurcated streamer lifetime
Cavitation clusters in lipid systems – ring-up, bubble population, and bifurcated streamer lifetime
The processing of oils is vital to their ultimate use within the food industry. Control over the physical properties of such materials could be achieved through the application of high-intensity ultrasound (HIU). However, the exact mechanism, centred upon acoustic cavitation, is currently unclear. To investigate the cavitation environment in oils further, the ring-up of a HIU source in an oil media is studied in the presence and absence of a pre-existing bubble population. High-speed imaging and acoustic measurements within the system is demonstrated to be extremely useful in characterising the dynamics present under non steady-state conditions. The behaviour of the clusters generated in the first 1000 ms under these conditions is shown to be significantly different depending on the bubble population. A bifurcated streamer (BiS), originating from a unique bi-cluster event, is only observable in the presence of a bubble population during the ring-up process to higher cluster orders. In addition, the lifetime of this BiS event is highly temperature dependent and is shown to be a good marker for the viscosity of the oil employed.
bubble population, ring-up, clusters, oil, processing, lifetime
1350-4177
1-6
Birkin, Peter R.
ba466560-f27c-418d-89fc-67ea4f81d0a7
Youngs, Jack
bdc2f78f-ae97-4faf-8930-1970ca697867
Truscott, Tadd
a7f0e66d-3c20-40ca-b795-bc9beec07132
Martini, Silvana
629c2b15-42c1-4d03-b669-45a1fd67e72f
Birkin, Peter R.
ba466560-f27c-418d-89fc-67ea4f81d0a7
Youngs, Jack
bdc2f78f-ae97-4faf-8930-1970ca697867
Truscott, Tadd
a7f0e66d-3c20-40ca-b795-bc9beec07132
Martini, Silvana
629c2b15-42c1-4d03-b669-45a1fd67e72f

Birkin, Peter R., Youngs, Jack, Truscott, Tadd and Martini, Silvana (2020) Cavitation clusters in lipid systems – ring-up, bubble population, and bifurcated streamer lifetime. Ultrasonics Sonochemistry, 67, 1-6, [105168]. (doi:10.1016/j.ultsonch.2020.105168).

Record type: Article

Abstract

The processing of oils is vital to their ultimate use within the food industry. Control over the physical properties of such materials could be achieved through the application of high-intensity ultrasound (HIU). However, the exact mechanism, centred upon acoustic cavitation, is currently unclear. To investigate the cavitation environment in oils further, the ring-up of a HIU source in an oil media is studied in the presence and absence of a pre-existing bubble population. High-speed imaging and acoustic measurements within the system is demonstrated to be extremely useful in characterising the dynamics present under non steady-state conditions. The behaviour of the clusters generated in the first 1000 ms under these conditions is shown to be significantly different depending on the bubble population. A bifurcated streamer (BiS), originating from a unique bi-cluster event, is only observable in the presence of a bubble population during the ring-up process to higher cluster orders. In addition, the lifetime of this BiS event is highly temperature dependent and is shown to be a good marker for the viscosity of the oil employed.

Text
Cavitation clusters main paper - Accepted Manuscript
Restricted to Repository staff only until 10 May 2022.
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More information

Accepted/In Press date: 7 May 2020
e-pub ahead of print date: 11 May 2020
Published date: October 2020
Keywords: bubble population, ring-up, clusters, oil, processing, lifetime

Identifiers

Local EPrints ID: 442322
URI: http://eprints.soton.ac.uk/id/eprint/442322
ISSN: 1350-4177
PURE UUID: 0a1edd64-4786-4174-a713-7cc0f090957a
ORCID for Peter R. Birkin: ORCID iD orcid.org/0000-0002-6656-4074

Catalogue record

Date deposited: 13 Jul 2020 16:31
Last modified: 07 Oct 2020 01:37

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