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, clusters, lifetime, oil, processing, ring-up
1-6
Birkin, Peter R.
ba466560-f27c-418d-89fc-67ea4f81d0a7
Youngs, Jack
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Truscott, Tadd
a7f0e66d-3c20-40ca-b795-bc9beec07132
Martini, Silvana
07d2edd4-c0d9-4703-aa4a-877c83ad7769
October 2020
Birkin, Peter R.
ba466560-f27c-418d-89fc-67ea4f81d0a7
Youngs, Jack
bdc2f78f-ae97-4faf-8930-1970ca697867
Truscott, Tadd
a7f0e66d-3c20-40ca-b795-bc9beec07132
Martini, Silvana
07d2edd4-c0d9-4703-aa4a-877c83ad7769
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, , [105168].
(doi:10.1016/j.ultsonch.2020.105168).
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
More information
Accepted/In Press date: 7 May 2020
e-pub ahead of print date: 11 May 2020
Published date: October 2020
Additional Information:
Funding Information:
This project was supported by Agriculture and Food Research Initiative (AFRI) Grant No. 2017-67017-26476 from the USDA National Institute of Food and Agriculture, Improving Food Quality–A1361 . This paper was approved by the Utah Agricultural Experiment Station as Paper Number 9279. We also thank the EPSRC ( EP/D05849X/1 ) for funding related to the high-speed camera.
Publisher Copyright:
© 2020 Elsevier B.V.
Keywords:
bubble population, clusters, lifetime, oil, processing, ring-up
Identifiers
Local EPrints ID: 442322
URI: http://eprints.soton.ac.uk/id/eprint/442322
ISSN: 1350-4177
PURE UUID: 0a1edd64-4786-4174-a713-7cc0f090957a
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Date deposited: 13 Jul 2020 16:31
Last modified: 17 Mar 2024 05:44
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Contributors
Author:
Jack Youngs
Author:
Tadd Truscott
Author:
Silvana Martini
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