Results 31 to 40 of about 11,145,362 (351)
Optimizing Geometrical Parameters of the Flow Channel in the Root-irrigation Emitters
Guan'gai paishui xuebao, 2022 【Objective】 The study is to present a new root-zone irrigation emitter and investigate the influence of the geometrical parameter of its spiral-hedge flow channel on hydraulic performance of the emitter.
ZHANG Jun, LI Lin
doaj +1 more source
Assimilating SAR-derived water level data into a hydraulic model: a case study [PDF]
, 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
Guan'gai paishui xuebao, 2022 【Objective】 The performance of sprinkler irrigation systems depends on many design factors and in this paper, we study the effect of orifice shape and the impact-arm of the nozzle on spraying characteristics when the systems are operated under low ...
HUA Lin, LI Hong, JIANG Yue, QIN Longtan
doaj +1 more source
Influence of Emitter Structure on Its Hydraulic Performance Based on the Vortex
Agriculture, 2021 The rectangular labyrinth emitter is taken as the study object in this article, as we added internal teeth to vortex-free and vortex areas in its lateral channel or lengthened the vertical channel, to change the channel structure. Using the computational
Cun-wen Wang, Zhiqing Li, Juanjuan Ma
semanticscholar +1 more source
Modeling Design and Research of Three-Dimensional Blades of 54 mm Turbodrill
Shiyou jixie, 2023 For the hydraulic loss caused by the impact of liquid to the rotor blade attributed to different circumferential velocities of liquid in cylindrical layers of the turbine rotor with different radii,a three-dimensional blade turbine was established using ...
Zhang Yuhang +4 more
doaj
Numerical Analysis of Internal Flow in a Slanted Axial-flow Pump
Guan'gai paishui xuebao, 2021 【Background and objective】 Slanted axial-flow pump has the advantages of small excavation depth, stable flow pattern and high efficiency. It has been widely used in large and medium-sized low head pumping stations.
HU Wenzhu +4 more
doaj +1 more source
Stem hydraulic capacitance decreases with drought stress : implications for modelling tree hydraulics in the Mediterranean oak Quercus ilex [PDF]
, 2017 Hydraulic modelling is a primary tool to predict plant performance in future drier scenarios. However, as most tree models are validated under non-stress conditions they may fail when water becomes limiting.
Limousin, Jean Marc +4 more
core +2 more sources
Agriculture, 2023 A bulb tubular pump unit is a horizontal tubular pump unit composed of a water pump and bulb with an electric motor installed. Electric motors, transmission equipment, and bearings are usually placed in the bulb.
Hongyin Zhang +5 more
doaj +1 more source
Energies, 2022 The rotation speed of water at the inlet of the low hump outlet conduit has a great effect on its hydraulic performance. Therefore, the influence of different inlet water rotation speeds on hydraulic loss and flow pattern of low hump outlet conduit is ...
Lei Xu +6 more
doaj +1 more source
Transform-based particle filtering for elliptic Bayesian inverse problems [PDF]
, 2019 We introduce optimal transport based resampling in adaptive SMC. We consider elliptic inverse problems of inferring hydraulic conductivity from pressure measurements.
Dubinkina, Svetlana +2 more
core +4 more sources