Results 11 to 20 of about 3,467 (257)

Drilling Performance of Rock Drill by High-Pressure Water Jet under Different Configuration Modes [PDF]

open access: yesShock and Vibration, 2017
In the rock drilling progress, the resistant force results in tools failure and the low drilling efficiency; thus, it is necessary to reduce the tools failure and enhance the drilling efficiency.
Songyong Liu   +2 more
doaj   +2 more sources

Degradation modes and tool wear mechanisms in finish and rough machining of Ti17 Titanium alloy under high-pressure water jet assistance [PDF]

open access: yes, 2013
This article presents the results of an experimental study on the Ti17 titanium alloy, which was carried out to analyze tool wear and the degradation mechanisms of an uncoated tungsten carbide tool insert. Two machining conditions, roughing and finishing,
GERMAIN, Guénaël   +3 more
core   +1 more source

Impinging Performance of High-Pressure Water Jets Emitting from Different Nozzle Orifice Shapes

open access: yesGeofluids, 2020
The impinging pressure of a water jet is a key factor in engineering applications, and the jet shape has a great influence on this pressure. In this paper, five different nozzle shapes were designed, and impacting tests were conducted based on a self ...
Fei Huang   +3 more
doaj   +1 more source

Study on the Influence of Bottom Hole Confining Pressure on High-Pressure Jetting Techniques

open access: yesShiyou jixie, 2021
As the development of oil and gas resources continues to deepen, the impact of bottom hole confining pressure on high-pressure water jetting has become more and more prominent. To compare the rock-breaking performance of high-pressure water jet under the
Li Jingbin   +5 more
doaj  

Experimental study on jet flow characteristics of fire water monitor

open access: yesThe Journal of Engineering, 2018
Fire water monitor is an important part of a sprinkler system. In this study, the jet flow characteristics of the external jet of the fire water monitor are studied. The water jet system is used to launch the water jet experiment under six pressures.
Xiumei Liu   +3 more
doaj   +1 more source

Formation Principle and Characteristics of Self-Supercharging Pulsed Water Jet

open access: yesChinese Journal of Mechanical Engineering, 2022
High-pressure pulsed water jet technology has considerable development potential in the field of rock fragmentation. To overcome the shortcomings of existing pulsed jets, a self-supercharging pulsed water jet (SSPWJ) generation method is proposed, which ...
Zhaolong Ge   +6 more
doaj   +1 more source

Field Study on the Waterstop of the Rodin Jet Pile Method in a Water-Rich Sandy Gravel Stratum

open access: yesApplied Sciences, 2019
Due to the increasing depths of underground urban construction, the surrounding environment and hydrogeological conditions are becoming increasingly complex, and conventional high-pressure rotary jet grouting has become unable to meet construction needs.
Chengli Guan, Yuyou Yang
doaj   +1 more source

Visualized experimental study on the process of high-pressure gas jet impacting on liquid-water column [PDF]

open access: yesAIP Advances
To investigate the interaction laws governing the interaction between a gas jet and a liquid medium during the process of liquid-balanced launching, and to elucidate the influence of high-temperature gas on the characteristics of the gas–liquid ...
Jian Wang   +3 more
doaj   +1 more source

Modulation of annular fluid enhanced self-excited pulsed water jet and its coal breaking characteristics

open access: yesMeitan xuebao, 2023
There are some bottleneck problems in the pressure relief and antireflection technology of submerged water jet in a downward hole, such as weak impact force, low coal breaking efficiency, less coal cutting and poor adaptability.
Yanwei LIU   +8 more
doaj   +1 more source

Transient Calculation Studies of Liquid–Solid Collision in Jet Descaling

open access: yesEnergies, 2022
Sichuan is gradually being transformed and is utilizing groundwater and thermal resources. However, this investigation found that the high mineralization rate of geothermal resources in the Sichuan Basin is common and efficient, and environmentally ...
Shu Hu   +4 more
doaj   +1 more source

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