Results 21 to 30 of about 415,717 (303)

Modelling of vertical shaft of mixed-flow pump [PDF]

open access: yesArchive of Mechanical Engineering, 2013
Abstract The aim of the work was modelling of shaft and calculation of natural vibration frequencies and critical rotations of a large-size, vertical mixed flow pump of total length l=4866 mm. Equations of motion were determined analytically, and then calculation results were verified by numerical modelling. The difficulty of the problem consisted
Henryk Holka, Tomasz Jarzyna
openaire   +1 more source

Influence of a groove-structured vortex generator on the drag reduction characteristics of a multiphase pump

open access: yesFrontiers in Energy Research, 2023
The oil–gas mixture pump significantly contributes to marginal oil field extraction and remote transportation of deep-sea oil. Nevertheless, during the operation of the mixture pump, it is inevitable to encounter problems like the separation of the mixed
Wei Han   +7 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

Impacts of Mixed-Wettability on Brine Drainage and Supercritical CO2 Storage Efficiency in a 2.5-D Heterogeneous Micromodel [PDF]

open access: yes, 2020
Geological carbon storage (GCS) involves unstable drainage processes, the formation of patterns in a morphologically unstable interface between two fluids in a porous medium during drainage.
Chang, C   +4 more
core   +5 more sources

Vibration of Shaft System in the Mixed-Flow Pump Induced by the Rotor-Stator Interaction under Partial Load Conditions

open access: yesShock and Vibration, 2018
In order to reveal the relationship between rotor-stator interaction-induced unsteady flow and the shaft vibration of the mixed-flow pump, PIV (particle image velocimetry) and axis orbit experiments were carried out synchronously in a mixed-flow pump ...
Wei Li   +5 more
doaj   +1 more source

Studies on diffuser of mixed flow pump.

open access: yesTRANSACTIONS OF THE JAPAN SOCIETY OF MECHANICAL ENGINEERS Series B, 1987
For the purpose of improving performance of a mixed flow pump, it is necessary to investigate not only an impeller but also a diffuser. The latter, however, has been investigated scarcely. Thus, in this report, the performance and internal flow of the mixed flow diffuser with vanes were clarified. The following conclusions were mainly derived.
Tomitaro TOYOKURA   +2 more
openaire   +2 more sources

3-D Viscous Flow Analysis of a Mixed Flow Pump Impeller

open access: yesInternational Journal of Rotating Machinery, 2001
This paper presents the results of a study using a coarse grid to analyze the flow in the impeller of a mixed flow pump. A commercial computational fluid dynamics code (FLOTRAN) is used to solve the 3-D Reynolds Averaged Navier Stokes equations in a ...
Steven M. Miner
doaj   +1 more source

Large-Eddy Simulation of Unsteady Flow in a Mixed-Flow Pump

open access: yesInternational Journal of Rotating Machinery, 2003
This article describes the large-eddy simulation (LES) of the internal flows of a high–specific-speed, mixed-flow pump at low flow-rate ratios over which measured head-flow characteristics exhibit weak instability. In order to deal with a moving boundary
Chisachi Kato   +2 more
doaj   +2 more sources

Pump-probe scheme for optical coherence tomography using indocyanine green mixed with albumin or human plasma [PDF]

open access: yes, 2005
Use of indocyanine green (ICG) in a pump-probe scheme for OCT is proposed. The study illustrates that ICG in protein solution shows unusual pump-probe imaging potential, indicating its usefulness as a contrast agent for ...
Applegate, Brian E.   +4 more
core   +1 more source

Effect of Incident Angle of Wear-Ring Clearance on Pressure Pulsation and Vibration Performance of Centrifugal Pump

open access: yesFrontiers in Energy Research, 2022
A wear-ring is an important part of the centrifugal pump. The leakage flow in the wear-ring clearance and main flow at the impeller inlet form crossed mixed flows perpendicular to each other.
XiaoQi Jia   +4 more
doaj   +1 more source

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