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Bubble breakup in a turbulent shear layer

Citation

Brandner, PA and Henderson, AD and De Graaf, KL and Pearce, BW, Bubble breakup in a turbulent shear layer, Journal of Physics Conference Series: 9th International Symposium on Cavitation, 6-10 December 2015, Lausanne, Switzerland, pp. 1-4. ISSN 1742-6588 (2015) [Refereed Conference Paper]


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DOI: doi:10.1088/1742-6596/656/1/012015

Abstract

The breakup of a millimetre size buoyantly rising bubble encountering a horizontal plane turbulent jet is experimentally investigated using high-speed shadowgraphy and acoustic techniques. The bubble diameter to jet height ratio is 0.75 and the jet height based Reynolds number is 4000. The high-speed imaging was recorded at 7 kHz simultaneous with hydrophone output at 100 kHz. Bubble breakup events were seen to produce simple binary divisions into products of similar size as well as three products where at least one was much smaller than the other products. Coalescence of products was also observed. In almost all cases time-frequency analysis of the acoustic emissions enabled the products to be identified and sized.

Item Details

Item Type:Refereed Conference Paper
Keywords:bubble break-up, turbulent shear, coalescence, high-speed imaging, acoustic characterisation
Research Division:Engineering
Research Group:Maritime Engineering
Research Field:Ship and Platform Hydrodynamics
Objective Division:Manufacturing
Objective Group:Transport Equipment
Objective Field:Nautical Equipment (excl. Yachts)
Author:Brandner, PA (Associate Professor Paul Brandner)
Author:Henderson, AD (Dr Alan Henderson)
Author:De Graaf, KL (Dr Katrina De Graaf)
Author:Pearce, BW (Dr Bryce Pearce)
ID Code:106497
Year Published:2015
Deposited By:NC Maritime Engineering and Hydrodynamics
Deposited On:2016-02-11
Last Modified:2016-08-01
Downloads:41 View Download Statistics

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