Results 181 to 190 of about 3,940 (221)

Hydraulic Pulsed Cavitating Jet-Assisted Drilling

Petroleum Science and Technology, 2009
Abstract How to improve drilling rate in deep wells has been a hot subject. Based on modulating pulse jet and cavitating jet, a new drilling tool is designed which couples advantages of both pulse jet and cavitating jet. When drilling fluid flows through the tool during the drilling process, fluid is modulated to pulse and cavitate.
G. Li, H. Shi, H. Liao, Z. Shen, J. Niu, Z. Huang, H. Luo   +6 more
openaire   +3 more sources

Jet Pump Cavitation

Journal of Basic Engineering, 1970
Mixing-throat cavitation in a liquid jet pump results from high jet velocities, low suction (NPSH) pressure, or low discharge pressure. Incipient cavitation at the jet boundary has no effect on jet pump efficiency, but under severe conditions it spreads to the walls.
R. G. Cunningham, A. G. Hansen, T. Y. Na
openaire   +1 more source

Preparation of graphene by jet cavitation

Nanotechnology, 2011
Despite its bright prospects, graphene faces challenges including issues concerning mass production. Here we present a totally green approach whereby common crystal graphite can be exfoliated into graphene sheets in aqueous solution by jet cavitation. This is possible mainly because the tensile stress caused by graphite-solution interfacial reflection ...
Zhigang, Shen, Jinzhi, Li, Min, Yi, Xiaojing, Zhang, Shulin, Ma   +4 more
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Jet-Cavitation Flow Past “Fluid Cylinders”

Fluid Dynamics, 2004
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Karlikov, V. P., Tolokonnikov, S. L.
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Criteria for jet cavitation and cavitation jet drilling

International Journal of Rock Mechanics and Mining Sciences, 2014
Abstract The research history of cavitation jets is reviewed, and a mechanism that explains cavitation, methods to measure when cavitation occurs and factors that affect cavitation are introduced. The rationality of the cavitation number, which is often used to predict cavitation, is discussed.
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Cavitation of a submerged jet

Experiments in Fluids, 2013
A cavitation cloud forms when a high-pressure water jet is submerged in a tank of quiescent water. The water jet is formed as high-pressure nitrogen forces a fixed-volume column of water through a nozzle. The diameter and exit velocity of the water jet affect the behavior and geometry of the resulting cavitation.
Michael M. Wright, Brenden Epps, Amanda Dropkin, Tadd T. Truscott   +3 more
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An Experimental Investigation of Cavitating Jet Dynamic Power and Cavitation Intensity

Volume 7: Fluid Flow, Heat Transfer and Thermal Systems, Parts A and B, 2010
The principal focus of this investigation were the effect of hydrodynamic and geometrical parameters on cavitating jet dynamic power and cavitation intensity under different flow conditions. Jet performance indicators were taken to be the erosion rate of the target surface and the size of the erosion area..
Hutli, Ezddin, Nedeljković, Miloš, Ilić, Vojislav   +2 more
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Cavitation in Submerged Water Jet at High Jet Pressure

Volume 2: Fora, 2015
Recent industrial applications have unfolded a promising prospect for submerged water jet. Apart from widely acknowledged water jet properties, submerged water jet is characterized by the formation and complex evolution of cavitation bubbles. These bubbles not just alter the flow behavior of submerged water jet but also pose a profound effect upon ...
Can Kang, Haixia Liu, Xiuge Li, Xiaonong Cheng   +3 more
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Cavitating Jet Apparatus for Cavitation Erosion Testing

1979
A submerged cavitating jet is used to erode a specimen placed in its path. The erosion depends primarily on the jet velocity, the downstream pressure, and the standoff distance of the specimen. An apparatus for erosion testing based on this principle is described. Results are presented showing the effect of these parameters on erosion.
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Jet Impact and Cavitation Damage

Journal of Basic Engineering, 1968
On the basis of presently known erosion theories, an analogy is made between jet impact and cavitation erosion, and confirmed by experiments. As a consequence of this analogy, data on jet impact experiments are used to explain some peculiar aspects of cavitation damage.
openaire   +1 more source