Results 41 to 50 of about 47,929 (166)

Effect of Axial Clearance on Hydraulic Performance of Multiphase Pump

Shiyou jixie, 2021
In order to study the influence of axial clearance of impeller and diffuser on the hydraulic performance of helical axial flow multiphase pump, taking single boosting unit of multiphase pump as the research object, selecting pure water as the ...
Shi Guangtai, Wang Binxin, Li Helin, Liu Zongku   +3 more
doaj  

Hydraulic Performance of the Denitrification Bioreactor

, 2012
Denitrification bioreactors, also known as woodchip bioreactors, are a new strategy for improving drainage water quality before these flows arrive at local streams, rivers, and lakes. A bioreactor is an excavated, woodchip-filled pit that is capable of supporting native microbes that convert nitrate in the drainage water to nitrogen gas.
Christianson, Laura, Helmers, Matthew, Pederson, Carl   +2 more
openaire   +3 more sources

DESEMPENHO DE UM INJETOR DE FERTILIZANTES DO TIPO VENTURI PARA FINS DE FERTIRRIGAÇÃO

Scientia Agricola, 1996
Com o objetivo de avaliar as características hidráulicas de um injetor de fertilizantes do tipo Venturi, construído de polietileno, realizou-se um teste de desempenho em laboratório.
J.O.P FERREIRA, J.A FRIZZONE, T.A BOTREL
doaj   +1 more source

Perfil radial e uniformidade de precipitação do aspersor NaanDanJain 427, em função da regulagem do defletor Radial profile and precipitation uniformity of sprinkler NaanDanJain 427, depending on the setting of the deflector

Revista Brasileira de Engenharia Agrícola e Ambiental, 2012
Neste trabalho o objetivo foi avaliar o perfil radial e a uniformidade de distribuição de água do aspersor fabricado pela empresa NaanDanJain, modelo 427 1/2"M e bocal de 2,8 mm de diâmetro interno, operando com pressões de 150, 200, 300 e 400 kPa em ...
Paulo E. S. Martins, José R. Zanini, Elcides R. da Silva, Marco A. F. Lemos Filho   +3 more
doaj   +1 more source

Numerical Prediction of the Influence of Particle Properties on the Hydraulic Performance and Wear of a Self‐Priming Pump

Energy Science & Engineering
In addressing the complexities associated with the conveyance of solid–liquid two‐phase flow by a self‐priming pump in field irrigation and drainage, this study numerically investigates the impact of three typical solid phase properties on the hydraulic ...
Ying‐Yu Ji, Ze‐Zhou Yang, Yu‐Liang Zhang, Kai‐Yuan Zhang   +3 more
doaj   +1 more source

Energy Characteristics in the Flow Channel of the Shaft-Type Tubular Pumping Station Considering Tides

Journal of Marine Science and Engineering
The shaft-type tubular pumping station has the remarkable characteristics of a large flow rate and high efficiency. It can realize the functions of irrigation, pumping, and drainage through pumping and generating conditions considering tides.
Yufan He, Can Luo, Li Cheng, Yandong Gu, Bin Gu   +4 more
doaj   +1 more source

Numerical Simulation of the Flow Field Stabilization of a Pressure-Regulating Device

Agriculture
In sprinkler irrigation systems in hilly areas, pressure-regulating devices can improve the uneven pressure distribution on branch pipes and consequently improve the irrigation uniformity. A pressure-regulating device for sprinkler irrigation systems was
Chao Chen, Yanyan Zhao, Junping Liu, Yuxia Zhao, Zawar Hussain, Rongjun Xie   +5 more
doaj   +1 more source

PDC Bit Optimization and Application in Panyu Oilfield of the South China Sea

Shiyou jixie, 2016
Panyu Oilfield of the South China Sea is subject to several technical problems.For example, soft and hard formations are repeatedly staggered to possibly damage drill bits and tools; plastic soft clay is prone to bit balling; high requirements are raised
Tian Zhixin, Liu Jun
doaj  

Study on the hydraulic performance of the side inlet/outlet with vertical bidirectional expansion in the diffusion section

Shui kexue jinzhan
To explore the hydraulic performance of a side inlet/outlet with vertical bidirectional expansion in the diffusion section，numerical simulations were conducted to analyze the velocity distribution at the trash rack section and the internal flow patterns ...
Hongtao ZHU, Duanpeng TIAN, Xueping GAO
doaj   +1 more source

Influence of the vertically arranged front injector system on the performance and operational stability of the short jet pump

Frontiers in Energy Research
As the core component of a water conservancy sprinkler irrigation system, the self-priming jet pump is required not only to meet performance criteria for self-priming but also to align with the growing trend toward compactness in sprinkler irrigation ...
Xiaogang Ma, Jun Yang, Tingting Dai, Jun Wang, Lei Tang, Lei Tang, Yang Yang   +6 more
doaj   +1 more source