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Nucleation effects on tip vortex cavitation inception location

Citation

Khoo, MT and Venning, JA and Pearce, BW and Brandner, PA, Nucleation effects on tip vortex cavitation inception location, Proceedings of the 22nd Australasian Fluid Mechanics Conference AFMC2020, 7-10 December 2020, Brisbane, Australia, pp. 1-4. ISBN 9781742723419 (2020) [Refereed Conference Paper]


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DOI: doi:10.14264/015283f

Abstract

Nuclei, or microbubble, populations are inextricably linked to tip vortex cavitation (TVC) inception and dynamics. In order to gain a better quantitative understanding of this relationship, high-speed video measurements were taken in a cavitation tunnel of TVC inception locations about an elliptical hydrofoil in flows with mono- and polydisperse injected nuclei populations. Sample sizes of O(1000) were acquired. For both populations, inception occurred between 0.02 chord lengths upstream of the hydrofoil tip and about 2.1 chord lengths downstream along the cavity trajectory. However, inception location distribution varied significantly with nuclei population. This is explained by the higher concentrations of weaker nuclei in the monodisperse case, which increases the distance along the vortex within which nuclei are susceptible to cavitation. These results provide the foundation for studies on TVC dynamics and acoustics.

Item Details

Item Type:Refereed Conference Paper
Keywords:cavitation, trailing vortices, tip vortex cavitation, cavitation nuclei, bubble dynamics
Research Division:Engineering
Research Group:Maritime engineering
Research Field:Ship and platform structures (incl. maritime hydrodynamics)
Objective Division:Expanding Knowledge
Objective Group:Expanding knowledge
Objective Field:Expanding knowledge in the physical sciences
UTAS Author:Khoo, MT (Mr Matthew Khoo)
UTAS Author:Venning, JA (Dr James Venning)
UTAS Author:Pearce, BW (Dr Bryce Pearce)
UTAS Author:Brandner, PA (Professor Paul Brandner)
ID Code:147904
Year Published:2020
Deposited By:NC Maritime Engineering and Hydrodynamics
Deposited On:2021-11-23
Last Modified:2021-11-23
Downloads:0

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