Jet-Supercavity Interaction

Insights from Experiments

M. J. Moeny, Michael H. Krane, I. N. Kirschner, Michael P. Kinzel

Research output: Contribution to journalConference article

2 Citations (Scopus)

Abstract

An experimental study was performed to evaluate some of the claims of Paryshev (2006) regarding changes to ventilated cavity behavior caused by the interaction of a jet with the cavity closure region. The experiments, conducted in the 1.22m dia. Garfield Thomas Water Tunnel, were performed for EDD to tunnel diameter of 0.022, Fr = 14.5 and 26.2. The model consisted of a converging-section nozzle mounted to the base of a 27.9mm 37° cone cavitator placed on the tunnel centerline at the end of a 138.4mm long streamlined strut. A ventilated cavity was formed over the model, then an air jet, issuing from a converging nozzle, was initiated. Changes to cavity behavior were quantified in terms of cavitation number, thrust-to- drag ratio, and stagnation pressure ratio at the jet nozzle. The results show that, while the overall trends predicted by Paryshev were observed, the data did not fully collapse, suggesting that many of the effects neglected by Paryshev's model have measureable effect.

Original languageEnglish (US)
Article number012162
JournalJournal of Physics: Conference Series
Volume656
Issue number1
DOIs
StatePublished - Dec 3 2015
Event9th International Symposium on Cavitation, CAV 2015 - Lausanne, Switzerland
Duration: Dec 6 2015Dec 10 2015

Fingerprint

cavities
nozzles
tunnels
interactions
hydraulic test tunnels
jet nozzles
stagnation pressure
struts
air jets
pressure ratio
cavitation flow
thrust
closures
drag
cones
trends

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

Cite this

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title = "Jet-Supercavity Interaction: Insights from Experiments",
abstract = "An experimental study was performed to evaluate some of the claims of Paryshev (2006) regarding changes to ventilated cavity behavior caused by the interaction of a jet with the cavity closure region. The experiments, conducted in the 1.22m dia. Garfield Thomas Water Tunnel, were performed for EDD to tunnel diameter of 0.022, Fr = 14.5 and 26.2. The model consisted of a converging-section nozzle mounted to the base of a 27.9mm 37° cone cavitator placed on the tunnel centerline at the end of a 138.4mm long streamlined strut. A ventilated cavity was formed over the model, then an air jet, issuing from a converging nozzle, was initiated. Changes to cavity behavior were quantified in terms of cavitation number, thrust-to- drag ratio, and stagnation pressure ratio at the jet nozzle. The results show that, while the overall trends predicted by Paryshev were observed, the data did not fully collapse, suggesting that many of the effects neglected by Paryshev's model have measureable effect.",
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Jet-Supercavity Interaction : Insights from Experiments. / Moeny, M. J.; Krane, Michael H.; Kirschner, I. N.; Kinzel, Michael P.

In: Journal of Physics: Conference Series, Vol. 656, No. 1, 012162, 03.12.2015.

Research output: Contribution to journalConference article

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