Results 21 to 30 of about 21,324,992 (287)

High-pressure jet cutting with liquid CO2 of plastics

, 2022
S.167-178Dry and residue-free cutting of materials is an important topic of today's research in manufacturing engineering. Due to these advantages, high-pressure liquid CO2 jet cutting has the potential to open new fields of applications in which water ...
Uhlmann, E., John, P.
core   +1 more source

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

Applied 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]

AIP 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, Shenshen Cheng, Xinggan Lu, Kun Jiang   +3 more
doaj   +1 more source

Behaviour of water in jet fuel: a literature review [PDF]

, 2013
This review gives a detailed account of the different types of water contaminated fuel and the conditions that bring about each form of contamination. It also considers studies that have been done to date that investigate the physics behind the behaviour
Lam, Joseph K.-W., Repetto, Sonia, Lawson, Craig P., Reppeto, S. L., Repetto, S. L., Baena-Zambrana, S., Lawson, C. P., Lam, J. K.W., Benavides Chaves, Alirio Yobany   +8 more
core   +1 more source

Jet mixing of water in crude oil pipelines [PDF]

, 1990
The jet mixing of water in crude oil pipelines by single nozzle and multi-nozzle mixers was studied by dividing the mixing domain into to three regions. the penetration. near field and farfield regions.
Fernando, L. M.
core   +4 more sources

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

Meitan 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, Liqun LONG, Weiqin ZUO, Huaizhen LI, Hongkai HAN, Jin SHI, Yunqiang LI, Jian MIAO, Haojie JIA   +8 more
doaj   +1 more source

Study on the optimal parameter matching model of rotary cutting coal-rock for abrasive water jet

Meitan kexue jishu
As coal mining extends deeper, pure water jet technology is gradually unable to meet the demand for coal penetration enhancement under high stress and high coal rock strength conditions.
Jianping WEI, Pengwei XIAO, Huidong ZHANG, Changjiang CHEN, Yong LIU   +4 more
doaj   +1 more source

High-pressure jet cutting with liquid CO2

, 2022
S.315-326With a developed experimental system a continuous liquid carbon dioxide jet with up to 3000 bar was realized. During the technological investigations the velocity and impulse force of high-pressure CO2 and water jets were analyzed.
Uhlmann, E., John, P.
core  

Preliminary study on occurrence of composite material delamination processed by abrasive water jet cutting

MATEC Web of Conferences, 2017
The paper presents a preliminary experimental study on processing composite materials (CFRP) using abrasive water jet cutting (AWJC) process, analysing the possibilities of occurrence of material delamination.
Popan Ioan Alexandru, Bâlc Nicolae, Popan Alina Ioana   +2 more
doaj   +1 more source

Progress on the hydraulic measures for grid slotting and fracking to enhance coal seam permeability

International Journal of Mining Science and Technology, 2017
A method of hydraulic grid slotting and hydraulic fracturing was proposed to enhance the permeability of low permeability coal seam in China. Micro-structural development and strength characteristics of coal were analysed to set up the failure criterion ...
Yiyu Lu, Zhaolong Ge, Feng Yang, Binwei Xia, Jiren Tang   +4 more
doaj   +1 more source