Results 51 to 60 of about 682,069 (145)

Power Pump Valve Dynamics [PDF]

open access: yes, 2009
LectureThe dynamics (movement) of the check valves in a reciprocating power pump determine whether the pump will operate quietly and smoothly, or noisily with pulsation and vibration.
Henshaw, Terry
core   +1 more source

Numerical investigation on the cavitating flow in Annular Jet Pump under different flow rate ratio

open access: yesIOP Conference Series: Earth and Environmental Science, 2014
The nozzle of annular jet pump (AJP) is annular and the secondary flow is encircled by the primary flow which is of great differences with that of central jet pump (CJP). Since the high velocity working flow soaring out the annular nozzle adheres to the inner wall, the cavitation is considerably easy to be induced at the intersection of the suction ...
L Z Xiao   +4 more
openaire   +1 more source

Vaginal delivery through annular placenta – case report [PDF]

open access: yes, 2013
Annular placenta is an extremely rare morphological type of human placenta. It is commonly related to placental vessel abnormalities frequently causing antenatal and postnatal hemorrhage and operative delivery.
Živković, Nikica   +7 more
core   +1 more source

Influence of Discharge Pressure on Jet Pump in Negative-Pressure Sand Washing Based on a Dual-Index Collaborative Evaluation System

open access: yesShiyou jixie
The current evaluation system for jet pumps relies heavily on pump efficiency, which, however, cannot directly reflect the core engineering objective (i.e.bottomhole sand cleaning efficiency) of negative-pressure sand washing.
Jia Xia   +5 more
doaj  

Chronic high vibration issue of a Condensate Pump [PDF]

open access: yes, 2022
Case StudiesChronic high vibration issue was being observed on a critical condensate pump. Although this motor driven pump is a standby unit, however, in case the running pump has a breakdown and the motor pump is unavailable, the Ammonia Plant will trip.
Bukhari, Syed M. Haseeb   +1 more
core  

A new structure of Tesla coupled nozzle in synthetic jet micro-pump

open access: yes, 2020
Synthetic jet pump is a potential technique to improve the pumping performance by introducing a smart structure which can enhance counter-rotating vortexes.
Nguyen, Nam-Trung   +10 more
core   +1 more source

Pump Rotordynamics Made Simple

open access: yes, 1998
Tutorialpg. 167One of the foremost concerns facing pump users today is that of rotordynamics. As pump speeds have increased to provide improved efficiencies and lighter packages, rotordynamics has assumed a significantly greater role in determining pump ...
Corbo, Mark A., Malanoski, Stanley B.
core   +1 more source

Static and Rotordynamic Analysis of a Plain Annular (Liquid) Seal in the Laminar Regime with a Swirl Brake for Three Clearances [PDF]

open access: yes, 2018
LecturesAnnular seals are non-contacting mechanical elements designed to reduce leakage between two areas of differing pressures such as between two impeller stages in a pump.
Childs, Dara, Ahmed Bin Najeeb, Ovais
core   +2 more sources

CFD application in slurry transport through Annular Jet Pump -A Mixture Model Approach

open access: yesJournal of Fluid Flow, Heat and Mass Transfer
Peer ...
Aaltonen Jussi   +2 more
openaire   +2 more sources

Enhancement of Pump/Plant Performance by Correct Evaluation of Process Fluid Viscosity Variations and Pump Geometry

open access: yes, 2016
Case StudyCase Study 16: In the modern pump industry, processed fluids are characterized by a wide spectrum of viscosity values. An unpredicted variation of actual process fluid properties, including viscosity, may lead to unexpected pump performance ...
Cicatelli, Giancarlo, Schiavello, Bruno
core   +1 more source

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