Results 31 to 40 of about 2,904 (160)

Bacterial Sterilization Using Cavitating Jet

Journal of Fluid Science and Technology, 2007
In this paper, a new sterilization method using cavitating flow is presented. Water with bacteria was pressurized up to 105 MPa and flushed out through two very small nozzles 0.1-0.31 mm in diameter, where a cavitating jet was generated containing bubbles that collapsed downstream.
Yohei AZUMA, Hiroharu KATO, Ron USAMI, Tadamasa FUKUSHIMA   +3 more
openaire   +3 more sources

Experimental and Numerical Investigation of Tip Leakage Vortex Cavitation in Water-jet Pump [PDF]

Journal of Applied Fluid Mechanics
During the operation of a water-jet pump, cavitation generates noise and vibration, causes surface erosion of the hydraulic components, and reduces the performance of the pump.
Y. Long, Z. Zhou, N. Li, M. Zhang, C. An, Y. Chen, R. Zhu   +6 more
doaj   +1 more source

Shadowgraph Imaging of Cavitating Jet

Journal of Flow Control, Measurement & Visualization, 2015
This paper deals with the statistical properties of unsteady structure of cavitating water-jet issuing into a stagnant fluid of water using the shadowgraph imaging combined with the proper orthogonal decomposition (POD) analysis. The experimental result indicates that the cavitating jet is composed of axisymmetric mode, while the periodic axial ...
Ryuta Watanabe, Takayuki Kikuchi, Takayuki Yamagata, Nobuyuki Fujisawa   +3 more
openaire   +2 more sources

Dynamics of cavity structures and wall-pressure fluctuations associated with shedding mechanism in unsteady sheet/cloud cavitating flows

Flow, 2023
The physics and mechanism of sheet/cloud cavitation in a convergent–divergent channel are investigated using synchronized dynamic surface pressure measurement and high-speed imaging in a water tunnel to probe the cavity shedding mechanism.
Changchang Wang, Mindi Zhang
doaj   +1 more source

Appearance of high submerged cavitating jet: The cavitation phenomenon and sono luminescence [PDF]

Thermal Science, 2013
In order to study jet structure and behaviour of cloud cavitation within time and space, visualization of highly submerged cavitating water jet has been done using Stanford Optics 4 Quick 05 equipment, through endoscopes and other lenses with Drello3244 and Strobex Flash Chadwick as flashlight stroboscope.
Ezddin Hutli, Omer Alteash, Raghisa Ben, Milos Nedeljkovic, Vojislav Ilic   +4 more
openaire   +2 more sources

Water Injection for Cloud Cavitation Suppression: Analysis of the Effects of Injection Parameters

Journal of Marine Science and Engineering
This study investigates cloud cavitation suppression around a model-scale NACA66 hydrofoil using active water injection and explores the effect of multiple injection parameters.
Wei Wang, Zhijian Li, Xiang Ji, Yun Wang, Xiaofang Wang   +4 more
doaj   +1 more source

Enhancing the aggressive intensity of a cavitating jet by introducing a cavitator and a guide pipe

Journal of Fluid Science and Technology, 2014
In order to enhance the aggressive intensity of a cavitating jet for practical applications, such as cavitation peening, a nozzle equipped with an additional nozzle upstream from the main nozzle, i.e., a cavitator, and a guide pipe downstream from the ...
Hitoshi SOYAMA
doaj   +1 more source

Cavitation in Water jet Pumps

Bulletin of JSME, 1979
Based on the similarity law of jet pump, a new cavitation parameter σ is proposed which has the similar meaning to Thoma's cavitation parameter in turbo pumps. The σ values are determined theoretically and presented as the function of specific speed nsj so that we may predict cavitation directly by using it in the designing. Experiments are carried out
Hiroshi NARUI, Shoichiro HARADA
openaire   +2 more sources

Bubble dynamics characteristics and influencing factors on the cavitation collapse intensity for self-resonating cavitating jets

Petroleum Exploration and Development, 2018
Based on bubble dynamics theory, a mathematic model describing the cavitation bubble size variation in the flow field of self-resonating cavitating jet was developed considering the pressure field and mass and heat exchange between cavitation bubble and ...
Kewen PENG, Shouceng TIAN, Gensheng LI, Zhongwei HUANG, Ruiyue YANG, Zhaoquan GUO   +5 more
doaj   +1 more source

Influence Mechanism of Pulse on the Cavitation Jet

Shiyou jixie, 2022
The mechanism of the effect of pulse on the cavitation is not clear,and there are few related researches presently.In this paper,Visual Studio software was used for secondary development of Workbench Fluent,the finite element calculation model of ...
Zhou Chuanxi, Chen Weihua, Pan Zhongyi, Guan Feng, Liu Xianming, Wan Feng   +5 more
doaj