Results 11 to 20 of about 108,536 (304)

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

Journal of Computational Multiphase Flows, 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   +4 more sources

Research on the Internal Flow Difference between Peak and Valley Conditions of Water Jet Propulsion Pump during Working at Hump Region

Journal of Marine Science and Engineering
When we tested the water jet propulsion pump, we found that there were significant vibrations in the pump, especially at small flow points that deviated from the design conditions. The water jet propulsion pump is a mixed-flow pump with guide vane, which
Hanqiao Han, Yun Long, Jinqing Zhong
doaj   +3 more sources

Concentrated separation vortex induced by non-uniform suction flow and its role in performance breakdown of a water-jet pump

Advances in Mechanical Engineering, 2017
Many water-jet pumps have a suction velocity profile, which is non-uniform and unfavorable for the pump performance. This article applies the numerical method to investigate the generation mechanism of performance breakdown in a water-jet pump under non ...
Puyu Cao, Yang Wang, Zhang Xiang, Guidong Li, Gang Yin   +4 more
doaj   +2 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

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

, 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, Huang, S, Jin, Z, Liu, X, Lu, Y, Lv, C, Parkin, IP, Song, J, Zhao, D, Zheng, H   +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

Química 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, Carmen Silvia Tavares de Santana, Cleônia Roberta Melo Araújo, Wilson Ceciliano da Silva, Cleylton Bezerra Lopes   +4 more
doaj   +1 more source

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

, 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, Raška, Jan, Tyč, Martin, Štefek, Adam   +3 more
core   +1 more source

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

Energies, 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, Jiegang Mou, Huiyan Zhang, Daohang Zou, Xuelong Yang, Xiaohui Liu, Zhi Qiu, Buyu Dong   +7 more
doaj   +1 more source

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

E3S 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, Nouri Nourooz Mohammad   +1 more
doaj   +1 more source

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

, 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., Podio, Augusto L., Sepehrnoori, Kamy   +2 more
core   +1 more source