Results 11 to 20 of about 108,324 (309)

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

Power-free water pump based on a superhydrophobic surface: generation of a mushroom-like jet and anti-gravity long-distance transport [PDF]

open access: yes, 2016
Spontaneous anti-gravitational transportation of liquids across long distances has been widely discovered in nature, such as water transportation from the root to the crown of a tree. However, artificial liquid delivery remains a challenge. In this work,
Carmalt, CJ   +9 more
core   +1 more source

Construção de um sistema simples e compacto de recirculação d'água sob pressão para trompa d'água Construction of a simple and compact system to recirculate water under pressure using a water-jet aspira tor pump

open access: yesQuímica Nova, 2009
Vacuum pumps are very useful in physical, chemical and biological experiments. In this communication it is described the design of a compact and low cost water recirculating system employing a water-jet aspirator pump as the vacuum source.
Dennis de Oliveira Imbroisi   +4 more
doaj   +1 more source

Possibilities of 3D machining of materials by abrasive water jets [PDF]

open access: yes, 2019
Machining of materials through classical way, i.e. using conventional tools for turning, drilling, milling, grinding and polishing, has some limits that can be overcome applying an abrasive water jet (AWJ). Therefore, some possibilities of 3D machining
Hlaváč, Libor   +3 more
core   +1 more source

Sediment Removal from Deep Reservoir Dams by Suction and Jet Flow [PDF]

open access: yesE3S Web of Conferences, 2022
One method of sediment removal from dam reservoirs is the use of submerged pumps and suction mixes of sediment and water. This method is usually considered for shallow rivers but we want to adopt this method for large dams.
Kianmehr Ali Ahmad   +1 more
doaj   +1 more source

Experimental Study on Performance of Liquid–Gas Jet Pump with Square Nozzle

open access: yesEnergies, 2023
An experimental study is conducted to investigate the effects of different operating parameters on the performance of liquid–gas jet pumps. A square nozzle with an area ratio of 2.25 is designed for the liquid–gas jet pump, and an experimental setup for ...
Xin Xu   +7 more
doaj   +1 more source

Numerical analysis of an annular water-air jet pump with self-induced oscillation mixing chamber [PDF]

open access: yes, 2017
This paper presents an improved annular water-air jet pump concept design through integrating a self-induced oscillation mixing chamber with the conventional annular jet pump (AJP). The internal flow characteristics for both conventional and improved AJP
Deng, X, Dong, J, Tu, J, Wang, Z
core   +2 more sources

Numerical studies for effect of geometrical parameters on water jet pump performance via entropy generation analysis

open access: yesJournal of Mechanical Engineering and Sciences, 2023
This paper presented an implementation of entropy generation analysis in the main flow field of a water jet pump via the CFD method. This study aimed to identify the inefficient location of energy conversion and to analyse entropy generation sources in ...
Muhammad Penta Helios   +1 more
doaj   +1 more source

Production system and method for producing fluids from a well [PDF]

open access: yes, 2004
A production system and method for producing fluids from a well are presented. The production system may include a submersible pump and a jet pump. The submersible pump may be arranged within the well.
Carvalho, Paulo M.   +2 more
core   +1 more source

Development of a microfluidic unit for sequencing fluid samples for composition analysis [PDF]

open access: yes, 2004
A microfluidic sample-sequencing unit was developed as a part of a high-throughput catalyst screening facility. It may find applications wherever a fluid is to be selected for analysis from any one of several sources, such as microreactors operating in ...
Adams   +14 more
core   +1 more source

Home - About - Disclaimer - Privacy