Results 1 to 10 of about 5,164 (90)

Flow Topology in the Confluence of an Open Channel with Lateral Drainage Pipe

open access: yesHydrology, 2020
The purpose of this paper is to develop design guidelines for flood control channel height in the vicinity of the confluence of a submerged drainage pipe and a flood control channel.
Mohammad Nazari-Sharabian   +2 more
doaj   +3 more sources

Subgrid Variational Optimized Optical Flow Estimation Algorithm for Image Velocimetry

open access: yesSensors, 2022
The variational optical flow model is used in this work to investigate a subgrid-scale optimization approach for modeling complex fluid flows in image sequences and estimating their two-dimensional velocity fields.
Haoxuan Xu   +4 more
doaj   +1 more source

Experimental investigations of open-channel flow and velocity to develop a predictive tool from a laboratory small scale to real-world large scale

open access: yesWater Science and Technology, 2022
Open channel flow and velocity behaviour presents a dilemma for drainage systems designers where hydrologic parameters are fluctuating in space and time.
Eyad Abushandi
doaj   +1 more source

Impact of Flow in Pipe and Box Coverages on Open Channel’s Performance [PDF]

open access: yesJES: Journal of Engineering Sciences, 2023
This experimental study aims to characterize the behavior of pipe and box coverages concerning their size, form, and upstream blockage ratio. In an artificial trapezoidal cross-section, five experimental cases were carried out: Case 1 involved an ...
emam osman
doaj   +1 more source

Effect of Duration on Variations in Bed Topography and Water Surface Profile in a Meandering Channel [PDF]

open access: yesJournal of Hydraulic Structures, 2021
In this study, variations in water surface profile and bed topography along a meandering path were examined under different experiment durations. Although several studies have been conducted on sediment and scour in open channels, addressing temporal ...
Nargess Moghaddassi   +2 more
doaj   +1 more source

Detection, Isolation, and Magnitude Estimation of Unknown Flows in Open-Channel Irrigation Systems

open access: yesIEEE Access, 2021
The development of modeling and estimation strategies, useful for determining the magnitude and location of unknown flows such as seepage and leaks, appears as a valuable tool to increase the efficiency of the open-channel irrigation systems (OCIS ...
Gregory Conde   +2 more
doaj   +1 more source

Effect of Shape of Sedient Particles at the Bed of Open Channel on Friction Coefficient [PDF]

open access: yesعلوم و مهندسی آبیاری, 2009
Hydraulic calculations of the flow in channel and over bank areas of flood plains require an evaluation of roughness characteristics. The Manning roughness coefficient (), Chesy coefficient () and Darsy-Weisbach coefficient () are used to describe the ...
Mohammad Bahrami Yar Ahmadi   +1 more
doaj   +1 more source

Flow velocity sensors arrangement for vegetated channels

open access: yesFrontiers in Plant Science, 2022
Ecological rivers or ecological channels are being widely used. Precious measurement and estimation of flow in irrigation areas are important issues in agricultural engineering.
Yi Zhou   +5 more
doaj   +1 more source

3D numerical simulation of the separation zone at the channel–pipe junction

open access: yesWater Science and Technology, 2023
At the confluence zone, the separation zone affects the flow, pollutant transport, and damages the bed and sidewalls of the channel. In this research, the geometric characteristics of the separation zone and the tailwater effect at the 90° channel–pipe ...
Bin Sun   +4 more
doaj   +1 more source

Obtaining High Temperature Stable Sepiolite via Optimization of Acid Treatment Conditions

open access: yesSakarya Üniversitesi Fen Bilimleri Enstitüsü Dergisi, 2023
Acid treatment of sepiolite under different molarity of HCl at various times was studied to find the best acid treatment conditions for obtaining anhydrous sepiolite without structural folding and with fully open and empty channels.
İlknur Kara
doaj   +1 more source

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