Results 181 to 190 of about 1,987 (214)

Localization of Incipient Propeller Cavitation in a Cavitation Tunnel Using Inversion Method

Volume 2, Fora: Cavitation and Multiphase Flow; Fluid Measurements and Instrumentation; Microfluidics; Multiphase Flows: Work in Progress; Fluid-Particle Interactions in Turbulence, 2014
An algorithm for the source localization of incipient vortex cavitation is suggested. Model scale experiment is performed in the Samsung cavitation tunnel to analyze the acoustic characteristics of propeller incipient vortex cavitation and desired target frequencies are determined for the localization based on the experiment.
Dongho Kim, Keunhwa Lee, Jeunghoon Lee, Woojae Seong   +3 more
openaire   +1 more source

A New State-of-the-Art Cavitation Tunnel - ITUKAT

Burcu Erbaş Öz, Selahattin Özsayan, Mehmet Delikan, Erdinç Kara, Aras Çetinkaya, Çağrı Aydın, Çağatay Sabri Köksal, Uğur Oral Ünal, Emin Korkut, Ömer Gören   +9 more
exaly   +2 more sources

Modeling of developed cavitation flows in water tunnels

Fluid Dynamics, 1987
An approximate dependence between cavitation numbers in an unbounded flow and in an experimental section of a water tunnel, at which the equality of the maximum transverse dimensions of the cavities formed behind identical cavitators is ensured, is obtained in the framework of a model of a viscous, weightless, incompressible liquid.
V. P. Karlikov, A. N. Khomyakov, G. I. Sholomovich   +2 more
openaire   +1 more source

Numerical Model of Cavitating Propeller Inside of a Tunnel

Journal of Fluids Engineering, 1999
The unsteady cavitating flow of a propeller subject to a nonaxisymmetric inflow inside of a tunnel is addressed. A numerical method is developed which solves for the fully unsteady propeller problem and the tunnel problem separately, with the unsteady effects of one on the other being accounted for in an iterative manner. The propeller influence on the
Jin-Keun Choi, Spyros A. Kinnas
openaire   +1 more source

Size measurement of bubbles in a cavitation tunnel by digital in-line holography

Applied Optics, 2011
Digital in-line holography (DIH) with a divergent beam is used to measure size and concentration of cavitation bubbles (6-100 μm) in hydrodynamic facilities. A sampling probe is directly inserted in the cavitation tunnel, and the holograms of the bubbles are recorded through a transparent test section specially designed for DIH measurements.
Lebrun, Denis, Allano, Daniel, Méès, Loïc, Walle, Françoise, Corbin, Frédéric, Boucheron, Romuald, Fréchou, Didier   +6 more
openaire   +3 more sources

CPP propeller cavitation and noise optimization at different pitches with panel code and validation by cavitation tunnel measurements

Ocean Engineering, 2012
Abstract The propeller design is an activity which nowadays presents ever increasing challenges to the designer, involving not only the usual mechanical characteristics fulfillment and cavitation erosion avoidance, but also other cavitation side effects, such as radiated noise and/or pressure pulses.
BERTETTA, DANIELE, BRIZZOLARA, STEFANO, GAGGERO, STEFANO, VIVIANI, MICHELE, SAVIO, LUCA   +4 more
openaire   +1 more source

A Waterjet Test Loop for the Tom Fink Cavitation Tunnel

Waterjet Propulsion 3, 2001
The Tom Fink Cavitation Tunnel and waterjet test loop are described. New and developing techniques for improved investigation of viscous and cavitation phenomena in waterjet flows are discussed. Consideration is given to testing at high Reynolds numbers, hull boundary layer simulation and water quality as related to cavitation testing.
P A Brandner, G J Walker
openaire   +1 more source

Aspects of the measurement of the acoustic transfer function in a cavitation tunnel

Applied Ocean Research, 2019
Abstract Model scale experiments represent one of the most effective, and probably the most commonly used, approaches for the study of cavitating propeller noise. Despite this, the acquirement of consistent data of propeller noise from tests in model scale facilities is still a challenging task.
Tani G., Viviani M., Ferrando M., Armelloni E.   +3 more
openaire   +2 more sources

On minimum cavitation number of the ventilated supercavity in water tunnel

Science China Physics, Mechanics and Astronomy, 2013
A numerical method consisted of the cavitation number correction and the model coefficient correction algorithms is presented to simulate the supercavity in water tunnel considering blockage and gravity effects based on the Logvinovich model. A model of the minimum cavitation number is also proposed based on the dimensional analysis theory, and the ...
Wang Zou, KaiPing Yu, R. E. A. Arndt, E. Kawakami   +3 more
openaire   +1 more source

On Cavitation Nuclei in Water Tunnels

Proceedings of the 8th International Symposium on Cavitation, 2012
H.-J. Heinke, C. Johannsen, W. KrÖger, P. Schiller, E.-A. Weitendorf   +4 more
openaire   +1 more source