Results 11 to 20 of about 2,935,970 (296)

An Impeller Optimization Method for the High Specific Speed Mixed-Flow Reactor Coolant Pump Applied to Marine Nuclear Power

open access: yesJournal of Marine Science and Engineering, 2023
The reactor coolant pump (RCP) is the only rotating equipment in the primary circuit system of a nuclear power plant and the “heart” of the nuclear reactor.
Qiang Fu   +4 more
doaj   +1 more source

Theoretical Turbine Model with Hydraulic Losses

open access: yesIOP Conference Series: Earth and Environmental Science, 2021
Abstract When doing transient and dynamic analysis of powerplants, a mathematical representation of the turbine is needed. These models can be fully based on empirical data, or they can be based on a first principles approach. A first principles approach is practical in many circumstances because any known and unknown turbine can be ...
B Svingen   +3 more
openaire   +1 more source

Optimizing the Outlet Distribution of Pipeline Irrigation for Rotation Irrigation with Hydraulic Loss in Consideration

open access: yesGuan'gai paishui xuebao, 2021
【Background】Low-pressure pipeline using pipes in lieu of open channels to convey water is a water-saving irrigation technology as it reduces leakage and evaporation.
LI Bin, LI Na, LI Duanming, GONG Shiwen
doaj   +1 more source

Analysis of Hydraulic Losses in Vortex Rope Inside the Draft Tube of Francis Pump-Turbine Based on Entropy Production Theory

open access: yesMachines, 2023
The existence of vortex ropes inside the draft tube significantly impacts hydraulic efficiency and operational stability, and few studies on the formation mechanism of vortex ropes and hydraulic loss problems have been explored.
Haobo Wang   +3 more
doaj   +1 more source

Effects of soil shear strength and runoff erosivity on slopes with different vegetation cover

open access: yesShui kexue jinzhan, 2016
The combined effects of soil shear strength and runoff erosivity is important to quantitatively express the relationship between soil erosion resistance ability,runoff detachment,and transport capacity.
XIAO Peiqing   +4 more
doaj   +1 more source

Rill morphology evolution and runoff and sediment yielding processes

open access: yesShui kexue jinzhan, 2016
In order to investigate the mutual feedback effects of rill morphology evolution on runoff and sediment,variation characteristics of runoff and sediment during the evolution of rill morphology were studied. In the current work,an indoor soil bin rainfall
ZHANG Pan   +3 more
doaj   +1 more source

Evolution and quantization methods of rill morphology on the slope under rainfall simulation

open access: yesShui kexue jinzhan, 2015
The quantitative methods of rill morphology evolution were studied,which employs the indoor soil bin rainfall simulation experiment of two bulk density of loess soil(1. 30 g/cm3,1. 05 g /cm3) under the rainfall intensities of 45 mm/h,87 mm/h and 127 mm/h
ZHANG Pan   +3 more
doaj   +1 more source

Investigation of high-speed deep well pump performance with different outlet setting angle of space diffuser

open access: yesFrontiers in Energy Research, 2023
As one of the important equipment for pumping groundwater, how to improve the operation performance of deep well pump has been a research hotspot. At present, most of the deep well pump hydraulic design research mainly focuses on the low speed condition,
Yang Gao   +4 more
doaj   +1 more source

Stone stability in breakwater toes based on local hydraulic conditions [PDF]

open access: yes, 2014
This study investigates the stability of rocks in breakwater toes. Previous studies have coupled the toe stability directly to the wave height, which is not physically accurate.
Peters, R.B.M. (Ruben)   +1 more
core   +1 more source

Effects on flow and sediment in the upper Yellow River by operation of Longyangxia Reservior and Liujiaxia Reservoir

open access: yesShui kexue jinzhan, 2017
The regulation mechanism of Longyangxia and Liujiaxia Reservoir on runoff and sediment process is one of the key scientific problems to recognize flow and sediment variation in the Yellow River and optimize the reservoir operation modes. According to the
YAO Wenyi, HOU Suzhen, DING Yun
doaj   +1 more source

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