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 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:	2021-12-07
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