Results 11 to 20 of about 655,300 (307)

Comparative Investigation on Hydrodynamic Performance of Pump-Jet Propulsion Designed by Direct and Inverse Design Methods

open access: yesMathematics, 2021
Pump-jet propulsion, a new propulsion technology, is primarily designed for underwater vehicles. Because of its concealment and excellent performance, it has been widely used, but due to its confidentiality and complexity, few studies have been published.
Yunkai Zhou   +8 more
doaj   +1 more source

Numerical Analysis of Single-Particle Motion Using CFD-DEM in Varying-Curvature Elbows

open access: yesJournal of Marine Science and Engineering, 2022
Centrifugal pumps are the critical components in deep-sea mining. In order to investigate the particle motion in the curved channel of the impeller, three different types of curvature conform to blade profile to simplify the impeller design of pumps.
Chao Ning   +4 more
doaj   +1 more source

Rotor strength and critical speed analysis of a vertical long shaft fire pump connected with different shaft lengths

open access: yesScientific Reports, 2022
The vertical long shaft fire pump (VLSFP) is mainly used in fire-fighting places far away from land and lacking large amounts of water supply. The paper selected the XBC18-178-240LC3 model of VLSFP as the research object.
Haiqin Song, Jinfeng Zhang, Fan Zhang
doaj   +1 more source

An Injected Fertigation Device

open access: yesGuan'gai paishui xuebao, 2023
【Background and objective】 Fertigation has the advantage of delivering water and fertilizers simultaneously into the root zones to maximize their uptake by crops. It has seen a rapid application in China.
LI Hong   +4 more
doaj   +1 more source

The Varied Role of Efflux Pumps of the MFS Family in the Interplay of Bacteria with Animal and Plant Cells [PDF]

open access: yes, 2019
Efflux pumps represent an important and large group of transporter proteins found in all organisms. The importance of efflux pumps resides in their ability to extrude a wide range of antibiotics, resulting in the emergence of multidrug resistance in many
Barras, Frederic   +7 more
core   +3 more sources

A piezoelectric micropump based on micromachining of silicon [PDF]

open access: yes, 1988
The design and realization of two pumps based on micromachining of silicon are described. The pumps, which are of the reciprocating displacement type, comprise one or two pump chambers, a thin glass pump membrane actuated by a piezoelectric disc and ...
Bouwstra, S.   +2 more
core   +2 more sources

Influence of Cutter Head on Cavitation of Non-Jammed Submerged Grinder Pump

open access: yesApplied Sciences, 2022
For the investigation of the cavitation of non-jammed submersible grinder pumps, a GSP-22 model pump was numerically simulated based on CFX. ICEM-CFD was applied to a structured mesh for the flow components.
Rongsheng Zhu   +4 more
doaj   +1 more source

Intelligent Diagnosis towards Hydraulic Axial Piston Pump Using a Novel Integrated CNN Model

open access: yesSensors, 2020
As a critical part of a hydraulic transmission system, a hydraulic axial piston pump plays an indispensable role in many significant industrial fields.
Shengnan Tang   +3 more
doaj   +1 more source

Geometrical Optimization of Pump-As-Turbine (PAT) Impellers for Enhancing Energy Efficiency with 1-D Theory

open access: yesEnergies, 2020
This paper presents a multi-objective optimization strategy for pump-as-turbines (PAT), which relies on one-dimensional theory and analysis of geometrical parameters.
Longyan Wang   +3 more
doaj   +1 more source

Improvement of Intake Structures in a Two-Way Pumping Station with Experimental Analysis

open access: yesApplied Sciences, 2020
Pumping stations are important regulation facilities in a water distribution system. Intake structures can generally have a great influence on the operational state of the pumping station.
Yanjun Li   +4 more
doaj   +1 more source

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