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Cavitation due to an impacting sphere

Citation

De Graaf, KL and Brandner, PA and Pearce, BW and Lee, JY, Cavitation due to an impacting sphere, 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:10.1088/1742-6596/656/1/012014

Abstract

Cavitation associated with the impact of a sphere on a flat surface is investigated using high-speed photography. The sphere, of diameter 15 or 45 mm and made from Ertacetal or stainless steel, was fully submerged and accelerated using a spring-loaded mechanism to achieve Reynolds numbers based on impact velocity and sphere radius of up to 7.2104. The static pressure and impact velocity were varied to achieve cavitation numbers ranging from 8.9 to 120.9. High-speed photography of the impacting sphere and induced cavitation bubble was filmed at 105-140 kHz. A log law relationship was found between the non-dimensional maximum bubble radius and the cavitation number. The relationship was modulated by the material properties. Interaction between the sphere and the bubble was also noted.

Item Details

Item Type:Refereed Conference Paper
Keywords:impact cavitation, sphere, bubble dynamics, high-speed imaging
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:De Graaf, KL (Dr Katrina De Graaf)
Author:Brandner, PA (Associate Professor Paul Brandner)
Author:Pearce, BW (Dr Bryce Pearce)
Author:Lee, JY (Mr Jun Lee)
ID Code:106496
Year Published:2015
Deposited By:NC Maritime Engineering and Hydrodynamics
Deposited On:2016-02-11
Last Modified:2016-08-01
Downloads:38 View Download Statistics

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