Results 41 to 50 of about 11,145,362 (351)

The Long-Term Hydraulic Efficiency of Green Infrastructure under Sea Level: Performance of Raingardens, Swales and Permeable Pavement in New Orleans

open access: yesLand, 2023
Greater New Orleans is surrounded by wetlands, the Mississippi River and two lakes. Excess rain can only be drained off with pumping systems or by evaporation due to the bowl-like shape of a large part of the city.
Floris Boogaard   +2 more
doaj   +1 more source

The Influence of Bulb Position on Hydraulic Performance of Submersible Tubular Pump Device

open access: yesJournal of Marine Science and Engineering, 2021
In order to study the influence of the position of the bulb on the hydraulic performance of a submersible tubular pump device, based on a large-scale pumping station, two schemes—involving a front-mounted bulb and a rear-mounted bulb, respectively—were ...
Zhuangzhuang Sun, Jie Yu, Fangping Tang
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

Simulation and optimization of hydraulic performance of small baffled subsurface flow constructed wetland.

open access: yesWater Science and Technology, 2021
The water body inside the constructed wetland is affected by various factors, and the flow state is relatively complicated. There will always be a certain degree of low velocity area and rapid outflow phenomenon, which makes part of the space in the ...
Rongzhen Wang   +4 more
semanticscholar   +1 more source

Hydraulic Response and Overtopping Performance of Single-Layer Double Cube Unit Armored Mound Breakwater

open access: yesJournal of Marine Science and Engineering, 2023
A newly developed friction-interlocking armor unit called the ‘Double cube’ (DC) was designed to improve the performance of a concrete armor unit used in river/marine structures against currents/waves actions.
Iman Safari   +4 more
doaj   +1 more source

Study on the Comparison of the Hydraulic Performance and Pressure Pulsation Characteristics of a Shaft Front-Positioned and a Shaft Rear-Positioned Tubular Pump Devices

open access: yesJournal of Marine Science and Engineering, 2021
The shaft front-positioned tubular pump device has been widely used in practical engineering, but the shaft rear-positioned pump device is rarely used due to its low efficiency.
Dongtao Ji   +6 more
semanticscholar   +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

Water–Pesticide Integrated Micro-Sprinkler Design and Influence of Key Structural Parameters on Performance

open access: yesAgriculture, 2022
The use of pergola trellis crops has led to a need for irrigation and the spraying of pesticides. Thus, a new integrated micro-nozzle was designed to provide water and pesticides.
Xinjian Wang, Junping Liu, Qing Zhang
doaj   +1 more source

Automated soil hardness testing machine [PDF]

open access: yes, 2007
This paper describes the design and performance of a mechatronic system for controlling a standard drop-hammer mechanism that is commonly used in performing outdoor soil or ground hardness tests. A low-cost microcontroller is used to control a hydraulic
Cubero, Samuel N.   +1 more
core   +2 more sources

Evaluation of Hydraulic Performance of Water Distribution System for Sustainable Management

open access: yesWater resources management, 2021
Understanding hydraulic performance of water distribution system is crucial for sustainable management of a water supply system. In this paper, a case study of hydraulic performance was evaluated using WaterGEMS hydraulic model integrated with GIS at ...
Tarekegn Kuma, Brook Abate
semanticscholar   +1 more source

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