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Analysis of the cavitation instabilities with time-resolved stereo and multiplane Particle Image Velocimetry [PDF]
, 2022 The present paper is devoted to the analysis of the various instabilities of cavitation attached to a two-dimensional (2D) profile. Time resolved stereo Particle Image Velocimetry (PIV) was conducted in a small-scale 2D venturi type section, in different
Olivier Coutier-Delgosha +7 more
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Results in Materials, 2023 This work developed a novel metal processing technique referred to as laser-assisted magnetic energy-intensive multifunction cavitation. This technology employs a strong magnetic field to focus bubble energy while applying sonic radiation around a ...
Toshihiko Yoshimura +2 more
doaj +1 more source
Journal of Fluid Science and Technology, 2022 The generated cavitation on the NACA16-012 hydrofoil suddenly disappears at a specific angle of attack, even at a low cavitation number, where cavitation normally develops. This was named the cavitation disappearance phenomenon by the authors. It has not
Koki SUGAYA +4 more
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Cavitation regime detection through Proper Orthogonal Decomposition: dynamics analysis of the sheet cavity on a grooved convergent-divergent nozzle [PDF]
, 2014 The unsteady character of the sheet cavity dynamics on the suction side of hydrofoils, on convergent–divergent nozzles or on blades in turbines and propellers is responsible for many issues like erosion, noise and vibrations. This two-phase flow dynamics
DANLOS, Amélie +7 more
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Study of the cavitating instability on a grooved Venturi profile [PDF]
, 2014 Instabilities of a partial cavity developed on a hydrofoil, a converging-diverging step, or in an interblade channel have already been investigated in many previous works. The aim of this study is to evaluate a passive control method of the sheet cavity.
DANLOS, Amélie +4 more
core +1 more source
Cavity induced vibration of flexible hydrofoils [PDF]
, 2014 The objective of this work is to investigate the influence of cavity-induced vibrations on the dynamic response and stability of a NACA66 hydrofoil at 8° angle of attack at Re=750 000 via combined experimental measurements and numerical simulations.
CHAE, Eun Jung +4 more
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Cavitation Bubble Cloud Break-Off Mechanisms at Micro-Channels
Fluids, 2021 This paper provides new physical insight into the coupling between flow dynamics and cavitation bubble cloud behaviour at conditions relevant to both cavitation inception and the more complex phenomenon of flow “choking” using a multiphase compressible ...
Paul McGinn +4 more
doaj +1 more source
Dynamics of the Cloud Cavitation and Cavitation Erosion.
TRANSACTIONS OF THE JAPAN SOCIETY OF MECHANICAL ENGINEERS Series B, 1999 It is well known that a cloud cavitation is one of the most destructive forms of cavitation. The set of equations for the motion of a spherical bubble cloud is formulated. Behavior of bubble clouds are simulated numerically when the surrounding pressure is decreased from 50 kPa to a 10 kPa and then increased to 50 kPa.
SHIMADA, Masahito +2 more
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High speed visualizations of the cavitating vortices of 2D mixing layer [PDF]
, 2012 The present study investigates experimentally vortex dynamics of a cavitating two-dimensional mixing layer at a high Reynolds number in order to determine the effect of growth and collapse of cavitation.
Aeschlimann, Vincent +7 more
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Spectral content of cloud cavitation about a sphere [PDF]
Journal of Fluid Mechanics, 2016 The physics and spectral content of cloud cavitation about a sphere are investigated in a variable-pressure water tunnel using dynamic surface pressure measurement and high-speed imaging. Experiments are conducted using a polyvinyl chloride sphere at a Reynolds number of $1.5\times 10^{6}$ with cavitation numbers, $\unicode[STIX]{x1D70E}$, ranging from
K. L. de Graaf +2 more
openaire +2 more sources