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Scale effects on cavitation about a sphere

Venning, JA ORCID: 0000-0002-4097-2168, Pearce, BW ORCID: 0000-0003-2189-5598 and Brandner, PA ORCID: 0000-0002-6721-878X 2020 , 'Scale effects on cavitation about a sphere', in H Chanson and R Brown (eds.), Proceedings of the 22nd Australasian Fluid Mechanics Conference AFMC2020 , The University of Queensland, Brisbane, pp. 1-4 , doi: 10.14264/843f2ec.

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Abstract

The cavity topology about a sphere is provided for a range of Reynolds numbers from 1.25 × 105 to 1.5 × 106. This decade range was achieved through three different diameter spheres and changing the freestream velocity. Various cavitation regimes were investigated including sheet cavitation, unsteady shedding of cloud cavitation, and supercavitation. High-resolution photography was used to capture the cavity state and allowed measurement of the cavity detachment angle. Two Reynolds number transitions were observed. Comparisons of cavity appearance at the same Reynolds and cavitation numbers, but different physical scales, show the influence of the Weber number.

Item Type: Conference Publication
Authors/Creators:Venning, JA and Pearce, BW and Brandner, PA
Keywords: cavitation, Reynolds number, multi-phase flow
Journal or Publication Title: Proceedings of the 22nd Australasian Fluid Mechanics Conference AFMC2020
Publisher: The University of Queensland
DOI / ID Number: 10.14264/843f2ec
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