Results 21 to 30 of about 52,363,070 (252)
Numerical and experimental design study of a regenerative pump [PDF]
, 2010 This paper presents the use of a commercial CFD code to simulate the flow-field within the regenerative pump and compare the CFD results with new experimental data.
Quail, Francis J. +2 more
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Vertical Turbine Pump Reliability Improvement [PDF]
, 2018 Case StudyThe subject pump was designed and installed when pipeline pressure was estimated high based on a higher production volume. The selected multistage vertical turbine-pumps are generically prone to vibration issues due to its flexible shaft design.
Zhao, Yve
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Measuring the Dynamic Characteristics of a Low Specific Speed Pump—Turbine Model
Energies, 2016 This paper presents results from an experiment performed to obtain the dynamic characteristics of a reversible pump-turbine model. The characteristics were measured in an open loop system where the turbine initially was run on low rotational speed before
Eve Cathrin Walseth +2 more
doaj +1 more source
International Journal of Rotating Machinery, 2018 In this study, a counter-rotating-type pump-turbine unit was optimized to improve the pump and turbine mode efficiencies simultaneously. Numerical analysis was carried out by solving three-dimensional Reynolds-averaged Navier–Stokes equations using the ...
Jin-Woo Kim +5 more
doaj +1 more source
Upthrust Problems On Multistage Vertical Turbine Pumps [PDF]
, 2005 Lecturepg. 46Vertical turbine pumps are designed to operate with the pump shafts in tension (downthrust). Most pump and motor manufacturers caution users to not operate the vertical turbine pumps at conditions that result in upthrust. upthrust ...
Smith, Donald R., Price, Stephen
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Transient Flow-Induced Stress Investigation on a Prototype Reversible Pump–Turbine Runner
EnergiesPump–turbine units with high heads are subjected to strong pressure pulsations from the unsteady transient flow in fluid channels, which can produce severe vibrations and high stresses on the pump–turbine structural components.
Dehao Zhang +5 more
doaj +1 more source
Comprehensive Review of Pump as Turbine
Renewable Energy and Sustainable Development, 2019 The turbine is a heart of power generation in a hydro-electric power system. A variety of different turbines are available for the purpose. The common types of Hydraulic turbines are; Pelton, cross flow, Francis, Kaplan, and propeller turbine.
Abdulbasit Nasir Jemal +1 more
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Atypical start-up experiments on pump as turbine
Advances in Mechanical Engineering, 2021 At present, research on the characteristics of pumps as turbine (PATs) during the start-up process is still insufficient. To reveal the transient characteristics of a centrifugal PAT during the atypical start-up process, a test rig for the transient ...
Yu-Liang Zhang, Yan-Juan Zhao
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Machines, 2022 In order to study the influence of tip clearance on the performance and energy dissipation of the axial-flow pump and the axial-flow pump as a turbine, and find the location of high dissipation rate, this study took an axial-flow pump model as its ...
Yanjun Li +4 more
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Correction of High Vibration on a Vertical Turbine Deep Well Pump with a Dynamic Vibration Absorber [PDF]
, 2018 Case StudyA 100 horsepower, 180 foot deep vertical turbine pump called #12 Well Pump had a history of reoccurring high vibration despite multiple pump rebuilds and motor replacements.
Bryant, Benjamin, Moll, Matthew
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