Results 11 to 20 of about 4,796 (239)

Perspectives of Hydrogen Generation in Cavitation–Jet Hydrodynamic Reactor

Applied Sciences
The article investigates the potential for producing hydrogen by combining the methods of water splitting under cavitation and the chemical activation of aluminum in a high-speed cavitation–jet flow generated by a specialized hydrodynamic reactor.
G. K. Mamytbekov, I. V. Danko, Zh. I. Beksultanov, Y. R. Nurtazin, A. Rakhimbayev   +4 more
doaj   +2 more sources

Numerical and Experimental Studies of Cavitation Behavior in Water-Jet Cavitation Peening Processing

Shock and Vibration, 2013
Water-jet cavitation peening (WCP) is a new technology for the surface modification of metallic materials. The cavitation behavior in this process involves complex and changeable physics phenomena, such as high speed, high pressure, multiple phases ...
H. Zhang, B. Han, X.G. Yu, D.Y. Ju
doaj   +2 more sources

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, Kunpeng Long, BAYEUL-LAINÉ, Annie-Claude, Annie-Claude Bayeul-Lainé, LONG, Kunpeng, GE, Mingming, COUTIER-DELGOSHA, Olivier, Mingming Ge   +7 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, Olivier Coutier-Delgosha, BAKIR, Farid, RAVELET, Florent, Amélie Danlos, Farid Bakir, COUTIER-DELGOSHA, Olivier, Florent Ravelet   +7 more
core   +1 more source

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, BAKIR, Farid, RAVELET, Florent, MÉHAL, Jean-Elie, COUTIER-DELGOSHA, Olivier   +4 more
core   +1 more source

Numerical Research of the Submerged High-Pressure Cavitation Water Jet Based on the RANS-LES Hybrid Model

Shock and Vibration, 2021
The submerged high-pressure water jet has the characteristics of high velocity, strong turbulence, and severe cavitation. In order to reveal the formation mechanism of shear cavitation in the submerged high-pressure water jet and to grasp the turbulent ...
Yongfei Yang, Weidong Shi, Linwei Tan, Wei Li, Songping Chen, Bo Pan   +5 more
doaj   +1 more source

Enhancing the Aggressive Strength of a Cavitating Jet and Its Practical Application

Journal of Fluid Science and Technology, 2011
A cavitating jet is a useful tool for the practical application of cavitation. Cavitation impact arises when bubbles collapse and can be utilized to modify the surfaces of materials as an alternative to shot peening.
Hitoshi SOYAMA, Osamu TAKAKUWA
doaj   +1 more source

Experimental Study on the Unsteady Characteristics and the Impact Performance of a High-Pressure Submerged Cavitation Jet

Shock and Vibration, 2020
High-pressure submerged cavitation jet is widely used in the fields of material peening, petroleum drilling, and ocean engineering. The impact performance of the jet with intensive cavitation is related to the factors such as working condition and the ...
Yongfei Yang, Wei Li, Weidong Shi, Ling Zhou, Wenquan Zhang   +4 more
doaj   +1 more source

Numerical and Experimental Investigations of Cavitation Phenomena Inside the Pilot Stage of the Deflector Jet Servo-Valve

IEEE Access, 2020
Two-stage electrohydraulic servo-valves play an important role in the most modern hydraulic servo control systems for fight wing controls, manufacturing robots, and many engineering applications.
Bijan Krishna Saha, Jinghui Peng, Songjing Li   +2 more
doaj   +1 more source

Numerical Investigation on the Cavitating Flow and the Cavitation-induced Noise in the Pump-jet Propeller [PDF]

Journal of Applied Fluid Mechanics
The noise hazard posed by cavitation in pump-jet propellers is a significant concern during oceanic operations. This study evaluates the cavitation performance and associated noise characteristics of pump-jet propellers in underwater conditions, further ...
P. Zhang, J. Yuan, Y. Fu, X. Hou, J. Hao
doaj   +1 more source