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The effect of nuclei on the attachment hysteresis in cavitating trailing vortices

Citation

Venning, JA and Paul, RA and Khoo, MT and Pearce, BW and Brandner, PA, The effect of nuclei on the attachment hysteresis in cavitating trailing vortices, Conference Proceedings, 10-13 May 2021, Daejon, Korea (In Press) [Refereed Conference Paper]


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Abstract

The incidence hysteresis between the attachment and detachment angles of a trailing vortex cavity behind an elliptical hydrofoil is investigated for two nuclei populations in a cavitation tunnel. Deplete and dense population were realized through natural and artificially seeded nuclei, respectively. The cavitation appearance was monitored for a range of incidences, and two hysteretic behaviours were observed. In a nuclei-deplete flow, the temporal delay equired to ingest and activate a susceptible nucleus and associated additional tension caused a larger incidence for cavity attachment. With dense seeding, however, the continual supply of nuclei into the cavity sustained the attached cavity at much lower incidences.

Item Details

Item Type:Refereed Conference Paper
Keywords:cavitation, nucleation, trailing vortices, TVC, nuclei
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:Venning, JA (Dr James Venning)
UTAS Author:Paul, RA (Dr Rhys Paul)
UTAS Author:Khoo, MT (Mr Matthew Khoo)
UTAS Author:Pearce, BW (Dr Bryce Pearce)
UTAS Author:Brandner, PA (Professor Paul Brandner)
ID Code:147895
Year Published:In Press
Deposited By:NC Maritime Engineering and Hydrodynamics
Deposited On:2021-11-22
Last Modified:2021-11-23
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