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1. Effect of compensation chamber structure on the hydraulic performance of pressure compensating drip emitters

Author:
Xueli Chen; Zhengying Wei; Caixiang Wei; Kun He
Source:
Biosystems engineering 2022 v.214 pp. 107-121
ISSN:
1537-5110
Subject:
hydraulic structures,   etc   ; crops; engineers; microirrigation; regression analysis; response surface methodology;     Show all 6 Subjects
Abstract:
... Pressure compensating (PC) emitters are installed at the end of the drip irrigation system to compensate for pressure loss and deliver water evenly to each crop. The PC emitter with excellent hydraulic performance can improve the irrigation uniformity of drip irrigation system. In this paper, the effects of main structural parameters of compensation chamber on the hydraulic performance of PC emitt ...
DOI:
10.1016/j.biosystemseng.2021.12.007

2. Numerical investigation of pollution transport around a single non-submerged spur dike

Author:
Ali Montazeri; Amirabbas Abedini; Milad Aminzadeh
Source:
Journal of contaminant hydrology 2022 v.248 pp. 104018
ISSN:
0169-7722
Subject:
hydraulic structures,   etc   ; humans; mathematical models; pollutants; rivers; streams; surface water; turbulent flow; wastewater; water quality;     Show all 10 Subjects
Abstract:
... Industrial contaminants and chemicals adversely impact surface water quality and may lead to serious health risks to human and ecosystems. Rivers as one of the major surface water resources receive wastewaters and transport dissolved pollutions in water through Advection-Dispersion processes. A minimum distance known as the mixing length is required for complete mixing and dispersion of the pollut ...
DOI:
10.1016/j.jconhyd.2022.104018

3. Assessment of scouring around spur dike in cohesive sediment mixtures: A comparative study on three rigorous machine learning models

Author:
Manish Pandey; Mehdi Jamei; Iman Ahmadianfar; Masoud Karbasi; A.S. Lodhi; Xuefeng Chu
Source:
Journal of hydrology 2022 v.606 pp. 127330
ISSN:
0022-1694
Subject:
hydraulic structures,   etc   ; clay; cohesion; comparative study; data collection; decision support systems; hydrology; models; nose; prediction; rivers; sediments;     Show all 12 Subjects
Abstract:
... Spur dike has been widely used as one of the river training structures to increase the stability of riverbanks and embankments. Scour around spur dikes affects their hydraulic performance and stability. Hence, the precise calculation of scour depth variation with time at spur dikes is essential to the design of safe and economical spur dikes. This study focuses on assessing the scour depth variati ...
DOI:
10.1016/j.jhydrol.2021.127330

4. The effect of upstream T-shaped spur dike on reducing the amount of scouring around downstream bridge pier located at a 180° sharp bend

Author:
Mohammad Vaghefi; Saman Solati; Chonoor Abdi Chooplou
Source:
International journal of river basin management 2021 v.19 no.3 pp. 307-318
ISSN:
1814-2060
Subject:
hydraulic structures,   etc   ; administrative management; bridges (infrastructure); watersheds;     Show all 4 Subjects
Abstract:
... With the advancement in the science of engineering, bridge piers scouring has become a well-known phenomenon, and engineers have always been making efforts to counter such a destructive phenomenon. One of the methods used to reduce scouring around the bridge pier is application of other hydraulic structures which influence the amount of scouring in the flow path, such as submerged vanes, collars, ...
DOI:
10.1080/15715124.2020.1776306

5. Installation and adaptive management of T-shaped and L-shaped spur dikes to control bed deformation and diversify physical environment in rivers

Author:
Takashi Sumi; Hiroshi Takebayashi; Masami Sakuma; Minoru Hasegawa; Kanako Ito; Seiji Yamamoto; Gen Shibata
Source:
Journal of hydro-environment research 2021 v.37 pp. 13-31
ISSN:
1570-6443
Subject:
hydraulic structures,   etc   ; adaptive management; deformation; research; rivers; sand; sediment deposition; surveys;     Show all 8 Subjects
Abstract:
... This study concerns a method to install spur dikes in the Yodo River, for the purpose of bed deformation control and diversification of physical conditions around the spur dikes. The effects on the physical conditions around the installed spur dikes are evaluated, based on numerical analysis and field survey. The numerical analysis results show that, by installing spur dikes with a focus on hydrau ...
DOI:
10.1016/j.jher.2021.04.002

6. Optimization of the Geometric Parameters of the Protective Spur Dike using Taguchi Method and GRA.

Author:
A. Atarodi; H. Karami; A. Ardeshir; Kh. Hosseini
Source:
̒Ulūm-i āb va khāk 2020 v.24 no.1 pp. 13-26
ISSN:
2476-5554
Subject:
hydraulic structures,   etc   ; Taguchi method; geometry; variance;     Show all 4 Subjects
Abstract:
... In general, engineering designs need to optimize the factors affecting the under-study phenomenon; however, this is often a costly and time-consuming process. In this regard, new methods have been developed to optimize with fewer tests; thus, they can make the whole process more affordable. In this study, Taguchi and Taguchi-GRA methods were used to design the geometric parameters of the protectiv ...

7. Internal boundary conditions for a GPU-accelerated 2D shallow water model: Implementation and applications

Author:
Susanna Dazzi; Renato Vacondio; Paolo Mignosa
Source:
Advances in water resources 2020 v.137 pp. 103525
ISSN:
0309-1708
Subject:
hydraulic structures,   etc   ; hazard characterization; mathematical models; rivers;     Show all 4 Subjects
Abstract:
... Flood propagation in rivers is strongly influenced by the presence of bridges and other hydraulic structures. Among the available approaches for including these elements in numerical models, the adoption of Internal Boundary Conditions (IBC), given its ability to capture backwater, is suitable for field-scale analyses for flood hazard assessment. In this paper, the implementation of internal bound ...
DOI:
10.1016/j.advwatres.2020.103525

8. Explicit data-driven models for prediction of pressure fluctuations occur during turbulent flows on sloping channels

Author:
Mehrshad Samadi; Hamed Sarkardeh; Ebrahim Jabbari
Source:
Stochastic environmental research and risk assessment 2020 v.34 no.5 pp. 691-707
ISSN:
1436-3240
Subject:
hydraulic structures,   etc   ; gene expression; models; prediction; turbulent flow;     Show all 5 Subjects
Abstract:
... Pressure fluctuations are among the favorite topics for hydraulic engineers due to their critical role in the design and safe operation of hydraulic structures. In this study, three explicit data-driven models, including Classification and Regression Trees (CART), Gene Expression Programming (GEP), and Multivariate Adaptive Regression Splines (MARS), are used. These methods are applied to predict ...
DOI:
10.1007/s00477-020-01794-0

9. A national fish passage barrier inventory to support fish passage policy implementation and estimate river connectivity in New Zealand

Author:
Paul A. Franklin; Julian Sykes; Jane Robbins; Douglas J. Booker; Sjaan Bowie; Eleanor Gee; Cindy F. Baker
Source:
Ecological informatics 2022 v.71 pp. 101831
ISSN:
1574-9541
Subject:
hydraulic structures,   etc   ; assets; automation; biodiversity; databases; decision making; fish; freshwater; inventories; issues and policy; migratory behavior; prioritization; private lands; risk; rivers; New Zealand;     Show all 16 Subjects
Abstract:
... Fragmentation of river systems is a key driver of freshwater biodiversity loss. Instream structure inventories are an essential component of delivering a strategic approach to restoring river connectivity. We used a range of data sources to collate the best available information on fish passage barriers and instream structures across the whole of New Zealand. To support implementation of new natio ...
DOI:
10.1016/j.ecoinf.2022.101831

10. Experimental increases in detritus boost abundances of small‐bodied fish in a sand‐affected stream

Author:
Gabriel L. Cornell; Robin Hale; John R. Morrongiello; Barbara J. Downes
Source:
Freshwater biology 2022 v.67 no.4 pp. 742-755
ISSN:
0046-5070
Subject:
hydraulic structures,   etc   ; Gadopsis marmoratus; Galaxias olidus; Macquaria australasica; detritus; invertebrates; landscapes; limnology; microhabitats; perch; prediction; reproduction; rivers; sand; stream channels; survival rate; wood; Australia;     Show all 18 Subjects
Abstract:
... Restoration projects often rely on the assumption that a local intervention will restore diminished populations, without fully understanding the constraints that limit the target species in the first place. In rivers, one common restoration technique is to place large structures, such as wood and boulders, on the bed, with the assumption that fish will subsequently arrive and use them. Nonetheless ...
DOI:
10.1111/fwb.13878

11. Influence of cohesion on scour at wake of partially submerged spur dikes in cohesive sediment mixtures

Author:
A. S. Lodhi; R. K. Jain; P. K. Sharma; Nilav Karna
Source:
ISH journal of hydraulic engineering 2021 v.27 no.2 pp. 123-134
ISSN:
2164-3040
Subject:
hydraulic structures,   etc   ; clay; clay fraction; cohesion; compression strength; geometry; gravel; sand;     Show all 8 Subjects
Abstract:
... This study presents the influence of cohesion on scour at wake region of the partially submerged spur dikes embedded in cohesive sediment mixtures consisting of clay-gravel and clay-sand-gravel. The experimental results revealed that the development of scour hole and scouring process around spur dike in cohesive sediment containing sand and gravel were considerably different than that of cohesionl ...
DOI:
10.1080/09715010.2018.1525325

12. Velocity Field and Turbulence Structure around Spur Dikes with Different Angles of Orientation under Ice Covered Flow Conditions

Author:
Rahim Jafari; Jueyi Sui
Source:
Water 2021 v.13 no.13 pp. -
ISSN:
2073-4441
Subject:
hydraulic structures,   etc   ; ice; ice cover; kinetic energy; roughness; turbulent flow; water;     Show all 7 Subjects
Abstract:
... Spur dikes are well-known structures that are widely used in rivers and coastal regions. Depending on their types, sizes, and orientation angles, spur dikes can substantially change flow characteristics. Results of previous studies indicate that the presence of an ice cover in rivers can cause complicated flow structures. The present experimental study investigates velocity fields and turbulence s ...
DOI:
10.3390/w13131844

13. Experimental Investigation of the Characteristics of Hydraulic Jump in a Diverging Stilling Basin with an Adverse Slope Using Baffle Blocks

Author:
Z. Eshkou; A. Dehghani; A. Ahmadi
Source:
̒Ulūm-i āb va khāk 2019 v.23 no.3 pp. 299-311
ISSN:
2476-5554
Subject:
hydraulic structures,   etc   ; basins; energy;     Show all 3 Subjects
Abstract:
... Stilling basins have been used as an energy dissipater downstream of hydraulic structures. Dimensions of the stilling basins depends on hydraulic jump characteristics. In this research diverging hydraulic jump with an adverse slope using baffle blocks and an end sill have been studied experimentally and effect of diverging angle of the walls, adverse bed slope and baffle blocks on the hydraulic ju ...

14. Impact of in-stream restoration structures on salmonid abundance and biomass: an updated meta-analysis

Author:
Kyleisha J. Foote; Pascale M. Biron; James W.A. Grant
Source:
Canadian journal of fisheries and aquatic sciences 2020 v.77 no.9 pp. 1574-1591
ISSN:
1205-7533
Subject:
hydraulic structures,   etc   ; Salmonidae; adults; biomass; fish; juveniles; meta-analysis; population dynamics; rivers; streams; wood;     Show all 11 Subjects
Abstract:
... Owing to declines in salmonid populations, in-stream restoration structures have been used for over 80 years to increase abundance of fish. However, the relative effectiveness of these structures remains unclear for some species or regions, partly due to contrasting conclusions from two previous meta-analyses. To update and reconcile these previous analyses, we conducted a meta-analysis using data ...
DOI:
10.1139/cjfas-2019-0327

15. Evaluation of impact of spur dike designs on enhancement of aquatic habitats in urban streams using 2D habitat numerical simulations

Author:
B. Ma; F. Dong; W.Q. Peng; X.B. Liu; A.P. Huang; X.H. Zhang; J.Z. Liu
Source:
Global ecology and conservation 2020 v.24 pp. e01288
ISSN:
2351-9894
Subject:
hydraulic structures,   etc   ; aesthetics; biodiversity; ecological restoration; economic valuation; evolution; hydrologic models; rivers; sediments; stream channels;     Show all 10 Subjects
Abstract:
... Although channelized urban streams provide aesthetic and economic value, they reduce biodiversity and alter the habitats of aquatic organisms. Spur dikes not only prevent the erosion of riverbanks, but also generally improve aquatic habitats. River 2D is widely used to analyze the aquatic habitats. However, the model often faces a challenge of lacking sediment and riverbed evolution module, which ...
DOI:
10.1016/j.gecco.2020.e01288

16. Implementation of a monitoring approach: the Palic-Ludas lake system in the Republic of Serbia

Author:
Mirjana Horvat; Zoltan Horvat
Source:
Environmental monitoring and assessment 2020 v.192 no.2 pp. 150
ISSN:
0167-6369
Subject:
hydraulic structures,   etc   ; decision making; lakes; monitoring; nutrients; sediments; temporal variation; wastewater treatment; water quality; Serbia;     Show all 10 Subjects
Abstract:
... This paper presents the development and implementation of a monitoring procedure on the Palic-Ludas lake system in the north of the Republic of Serbia. After evaluating the system’s current monitoring approach, additional measurements were conducted for both hydraulic and water quality parameters. The considered area is a complex system that incorporates lakes, hydraulic structures, and a channel, ...
DOI:
10.1007/s10661-019-7927-9

17. Use of high-water marks and effective discharge calculation to optimize the height of bank revetments in an incised river channel

Author:
Bartłomiej Wyżga; Artur Radecki-Pawlik; Tomáš Galia; Karol Plesiński; Václav Škarpich; Radek Dušek
Source:
Geomorphology 2020 v.356 pp. 107098
ISSN:
0169-555X
Subject:
hydraulic structures,   etc   ; bags; bedload; bedrock; cost effectiveness; geometry; models; rivers; roughness; sediment transport; shear stress;     Show all 11 Subjects
Abstract:
... In deeply incised rivers, bankfull discharge (i.e. the flow filling the channel to the top of the banks) does not represent channel forming flow and increasingly large flows are associated with increasingly large boundary shear stress. In such rivers, solid bank revetments (rip-rap, gabions, retaining wall) are usually constructed to the top of the banks—similarly as in vertically stable rivers—de ...
DOI:
10.1016/j.geomorph.2020.107098

18. Stable-thickness study of masonry block on the inner slope of dikes

Author:
Tianting Sun; Qingjun Liu; Dengting Wang
Source:
Journal of oceanology and limnology 2019 v.37 no.6 pp. 1921-1928
ISSN:
2096-5508
Subject:
hydraulic structures,   etc   ; construction materials; equations; models; China;     Show all 5 Subjects
Abstract:
... Dike failure caused by overtopping is likely to result in major casualties and property losses. Aiming at this fact, a series of physical model experiments were conducted on stable thickness of masonry block on the inner slope of the dike. According to the erosion of block embankment with different thicknesses, the relation between the stable thickness of masonry block pitching of the inner slope ...
DOI:
10.1007/s00343-019-8235-5

19. Correction of pumping station parameters in a one-dimensional hydrodynamic model using the Ensemble Kalman filter

Author:
Xiaohui Lei; Yu Tian; Zhao Zhang; Lingling Wang; Xiaohua Xiang; Hao Wang
Source:
Journal of hydrology 2019 v.568 pp. 108-118
ISSN:
0022-1694
Subject:
hydraulic structures,   etc   ; hydrodynamics; hydrologic models; water distribution;     Show all 4 Subjects
Abstract:
... Pumping stations (PSs) are common regulation facilities in a water distribution system, with complex hydraulic characteristics and hydraulic parameters. In this study, a data assimilation-based approach was proposed for the correction of PS parameters, in which a 1D hydrodynamic model with PS inner boundary was established, and then the Ensemble Kalman filter (EnKF) framework was used to correct P ...
DOI:
10.1016/j.jhydrol.2018.10.062

20. Experimental study of flow pattern and sediment behavior near the intake structures using the spur dike and skimming wall

Author:
Amir Moradinejad; Mojtaba Saneie; Amir Ghaderi; Seyed Mahyar Zamanieh Shahri
Source:
Applied water science 2019 v.9 no.8 pp. 195
ISSN:
2190-5487
Subject:
hydraulic structures,   etc   ; hydrologic engineering; sediments; turbulent flow;     Show all 4 Subjects
Abstract:
... Channel junctions and lateral intakes are always caused turbulence in the passing flow. In this research, an experimental study was carried out to explore a possible method for sediment control for a series of skimming walls and a single spur dike, simultaneously. In order to direct the flow into the diversion channel and increase the skimming wall function, a single spur dike was utilized at the ...
DOI:
10.1007/s13201-019-1069-7