... a two-dimensional hydrofoil in the world's largest water tunnel, the US Navy's William B. Morgan Large Cavitation Channel (LCC). The goal of these experiments is to provide a unique high Reynolds number experimental dataset at chord-based Reynolds numbers (Re) approaching those of full-scale propulsors...

... Results from towing-tank experiments of free-surface wave-induced separation are documented. Free­surface elevations and surface pressures are measured for a surface-piercing NACA0024 hydrofoil progressing into a calm free surface at the Iowa Institute of Hydraulic Research (IIHR) towing tank...

... The interaction of gas bubbles with a vortex is investigated experimentally to clarify the role of the initial bubble position on its trajectory around the tip vortex shed from a large hydrofoil. The experiments performed with 4-6 mm bubbles show they can undergo no capture, quick capture...

... One method to improve high-speed catamaran performance is to fit transverse hydrofoils between catamaran hulls. These foil result in decreased catamaran resistance from reduced hull draft and reduced wetted surface. To develop workable designs it is necessary to size the hydrofoils to support...

... An electrical impedance probe is used to study the properties of partial attached cavitation. The method uses a series of electrodes mounted flush to the surface of a cavitating hydrofoil to obtain ti.me-dependent information about the presence of liquid or vapor in the region of interest...

... The flow field around a fully ventilated two-dimensional hydrofoil of arbitrary geometry is considered. The presented theory is a non-linear, time marching, potential based boundary element method. The perturbation potential on the cavity is a function of submergence and time. The non-linear...

... bdwt fluid dynamics university tunnel michigan figure 2 multiphase flow mechanical engineering particle mechanics upstream oil & gas cavity blowdown experiment blowdown water tunnel laser hydrofoil cavitation inception mlcc vacuum contraction california institute interaction...

... A supercavitating hydrofoil experiment is performed at the MIT Variable Pressure water tunnel, at several angles of attack and cavitation numbers. The velocity is measured on a rectangular contour surrounding the foil and cavity, and the results are compared to those from an analysis method...

... The single phase and cavitating tip vortex shed by a NACA .66-209 rounded tip hydrofoil has been studied. Single phase measurements of instantaneous flow velocity were made by taking double pulsed holograms of microbubbles moving in and around the vortex core. The tailored air bubble technique...

... cavitation supercavitation upstream oil & gas coefficient propeller hydrofoil cavitation thrust breakdown fluctuation figure 8 figure 1 '1'B& INFLU&NCE OF SURl'ACE CAVI'l'A'l'ION ON HYDRODYNAMIC FORCES Young T. Shen David Taylor Research Center Bethesda, HD 20084-5000 Paul E. Dimotakis...

... experiment hydrofoil circulation tunnel agreement The Structure of Tip Vortices· Over a Range of Cavitation Number H. Higuchi, R.E.A. Arndt, V. H. Arakeri* and J. M. Killen St. Anthony Falls Hydraulic Laboratory Minneapolis, Minnesota Abstract The tip vortex roll-up process from an elliptic wing...

... The tip vortex structure of a three dimensional hydrofoil at high Reynolds number was measured experimentally in both the 48-in (1.22- m) diameter water tunnel and the 48-in (1.22-m) wind tunnel at the Applied Research Laboratory, Penn State. The flow on and near the hydrofoil was measured...

... Although the emphasis of this paper is on gaseous diffusion into a full cavity behind an oscillating flat-plate hydrofoil, the unsteady diffusion theory given below applies also to the limiting case of "steady" supercavitating flow. The entire unbounded flow is assumed to be turbulent...