Results 21 to 30 of about 385,138 (310)

Numerical study on the energy performance of an axial-flow pump with different wall roughness

open access: yesFrontiers in Energy Research, 2022
Pumping stations play an important role in China’s South-to-North Water Diversion, agricultural irrigation, and municipal drainage. Some pumping station units have been put into operation for long periods with improper operation and require maintenance ...
Yuling Chen   +5 more
doaj   +1 more source

Pressure-driven modelling of water distribution systems [PDF]

open access: yes, 2002
This paper presents a novel method to model water distribution systems (WDS) with insufficient pressure. Methods for the prediction of the performance of a WDS with pressure deficiencies are reviewed.
Tahar, B., Tanyimboh, T., Templeman, A.
core   +2 more sources

Influence of Guide Vane Slope on Axial-Flow Hydraulic Performance and Internal Flow Characteristics

open access: yesEnergies, 2022
To comprehensively study the influence of the guide vane inlet slope on the axial-flow pump, eight groups of axial-flow pumps with different guide vane inlet slopes are designed and studied in this paper.
Yue Li   +3 more
doaj   +1 more source

Fragility of Hydraulic Elevators for Use in Performance-Based Earthquake Engineering [PDF]

open access: yes, 2007
New performance-based earthquake engineering methods developed by the Pacific Earthquake Engineering Research Center, the Applied Technology Council, and others include damage analysis at a highly detailed level, requiring the compilation of fragility ...
Porter, Keith
core   +1 more source

The rule of the front and behind top edges of weirs on their hydraulic performance and working efficiency

open access: yesLimnological Review, 2017
The geometry of weirs is a prime factor influencing hydraulic performance and accuracy. One of the geometric components of weirs, is the situation of its top corners, are they sharp or rounded, and what is the most suitable radius of such rounding curves?
Ashour Mohamed A.   +2 more
doaj   +1 more source

Assimilating SAR-derived water level data into a hydraulic model: a case study [PDF]

open access: yes, 2011
Satellite-based active microwave sensors not only provide synoptic overviews of flooded areas, but also offer an effective way to estimate spatially distributed river water levels.
De Keyser, Robain   +10 more
core   +2 more sources

Hydraulic performance of non-pressurized mesh filter in front of pumps

open access: yesGuan'gai paishui xuebao
【Objective】 Non-pressurized mesh filters are often installed in front of pumps to filter sediments and debris. In this paper, we study the influence of different irrigation water sources and backwash device parameters on hydraulic performance of a new ...
LEI Chenyu   +5 more
doaj   +1 more source

Efficiency and hydraulic performance of the micro-pressure filter in front of the pump studied using PPR and NSGA-II

open access: yesGuan'gai paishui xuebao
【Objective】 Pump often has a filter installed in the front of it to filter sediments and debris. This paper studied its efficiency and performance. 【Method】 The study was based on physical model, with flow rate being 2-8 m3/h, sediment content being 0.5 ...
TAO Hongfei   +5 more
doaj   +1 more source

Impact of the Magnetic Gap in Submerged Axial Flux Motors on Centrifugal Pump Hydraulic Performance and Internal Flow

open access: yesMachines
The integration of axial flux motors into canned motor pumps offers a promising approach to overcome the efficiency and size limitations of traditional designs, particularly in critical sectors like aerospace.
Qiyuan Zhu, Yandong Gu, Junjie Bian
doaj   +1 more source

Study on performance and flow loss of reactor coolant pump with different laws of guide vane angle

open access: yesEnergy Science & Engineering, 2023
To study the influence of different laws of guide vane angle on the performance of reactor coolant pump (RCP), five models of RCP with different guide vane were designed, and the three‐dimensional numerical calculation was carried out.
Daoxing Ye   +5 more
doaj   +1 more source

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