Results 171 to 180 of about 1,987 (214)

Comparison of tunnel and jet methods for cavitation erosion testing

Wear, 1995
Abstract The cavitation erosion behaviour of a number of metals has been studied using a sea water cavitation tunnel test and a fresh water jet cavitation method. Erosion parameters, including erosion rate and depth of damage, have been obtained for both systems and the data shown to correlate with mechanical properties of the metal, such as ...
V D Scott, B Mcenaney, K R Stokes
exaly   +2 more sources

Measurement and computation of the acoustic field in a cavitation tunnel

Journal of Marine Science and Technology, 1996
Sound pressure distribution around a monotone sound source was measured inside a marine propeller cavitation tunnel and compared with the calculated result by a two-dimensional boundary element method. The measured sound pressure distribution showed some peaks due to the reflection effect of the tunnel test section boundary. As the frequency increased,
Hiroharu Kato, Kato Hiroharu
exaly   +2 more sources

Cavitation Tunnel Tests on Ducted Propellers

, 2012
Propeller design requirements are nowadays more and more stringent, demanding not only to provide high efficiency and to avoid cavitation, but including also requirements in terms of low induced vibrations and radiated noise. Ducted propellers may provide the opportunity to reduce these negative effects or to increase the efficiency of heavily loaded ...
BERTETTA, DANIELE, Bertoglio C., Conti F., RIZZO, CESARE MARIO, VIVIANI, MICHELE   +4 more
openaire   +2 more sources

Water cavitation tunnel characterisation by LDV

, 2021
Water cavitation tunnel T-33, which exists in the Experimental Aerodynamics Laboratory of the Military Technical Institute, in Belgrade, since 1952 is presented in this paper. It is a continuous close-loop water tunnel. Pump has 91 kW DC power supply. It is refurbished and has a new test section with dimensions 450 mm x 500 mm.
Ocokoljić, Goran, Janković, Novica, Samardžić, Marija, Svorcan, Jelena, Čantrak, Đorđe   +4 more
openaire   +2 more sources

Noise Prediction of the Cavitation Tunnel

Volume 1: Fora, Parts A, B, C, and D, 2003
The present paper is concerned with the prediction technique of back ground noise in the cavitation tunnel generated by flow-induced noise and the mechanical noise. To predict the back ground noise level, acoustic power balance method has been applied as computation technique.
Toshifumi Kudo, Masaharu Nishimura, Shinichi Sawada, Takayuki Mori, Ryuichi Sato   +4 more
openaire   +1 more source

The Wall Effect on Ventilated Cavitating Flows in Closed Cavitation Tunnels

Journal of Hydrodynamics, 2008
For ventilated cavitating flows in a closed water tunnel, the wall effect may exert an important influence on cavity shape and hydrodynamics. An isotropic mixture multiphase model was established to study the wall effect based on the RANS equations, coupled with a natural cavitation model and the RNG k-e turbulent model.
Xin Chen, Chuan-jing Lu, Jie Li, Zhan-cheng Pan   +3 more
openaire   +1 more source

Cavitation luminescence from flow over a hydrofoil in a cavitation tunnel

Journal of Fluid Mechanics, 2003
This paper describes a photon-counting study of the cavitation luminescence produced by flow over a hydrofoil. This has previously been identified in water saturated with xenon. The four objectives of this study are: to determine whether luminescence can be obtained using air-saturated water; to quantify this emission, if it is present, as a function ...
Leighton, T.G., Farhat, M., Field, J.E., Avellan, F.   +3 more
openaire   +3 more sources

Acoustic characterization of a cavitation tunnel for ship propeller noise studies

Journal of Ocean Engineering and Science
The noise radiated by ship propellers can be studied by analyzing scaled models in a cavitation tunnel. However, transferring the measurements made in the enclosed space of the tunnel to the expected values in a full-scale propeller (in a free field ...
Johan Augusto Bocanegra, Davide Borelli, R Pico   +2 more
exaly   +3 more sources

A Cavitating Hydrofoil in a Solid Wall Tunnel

ZAMM - Journal of Applied Mathematics and Mechanics / Zeitschrift für Angewandte Mathematik und Mechanik, 1975
AbstractA nonlinear theory is developed for a flow about a flat plate hydrofoil with a finite cavity in a solid wall tunnel applying the Sedov's method treated the mixed boundary value problem in the doubly connected region.
openaire   +2 more sources

A BEM for the modeling of unsteady propeller sheet cavitation inside of a cavitation tunnel

Computational Mechanics, 2005
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Lee, H. S., Kinnas, S. A.
openaire   +1 more source