Search

Your search keyword '"FGP (flaring gate pier)"' showing total 3 results
Start Over Descriptor "FGP (flaring gate pier)"
3 results on '"FGP (flaring gate pier)"'

1. Effect of Flaring Gate Piers on Discharge Coefficient for Finite Crest-Length Weirs

Author

Zhong Tian, Wei Wang, Ruidi Bai, and Nan Li

Subjects
finite crest length weir, FGP (flaring gate pier), discharge coefficient, subcritical flow, Hydraulic engineering, TC1-978, Water supply for domestic and industrial purposes, TD201-500
Abstract

The use of flaring gate piers (FGPs) along with finite crest-length weirs changes the shape of plunging jets and increases the efficiency of energy dissipation in some projects; however, the FGPs may affect the discharge capacity. In this study, the flow pattern and discharge coefficient were experimentally investigated under different conditions by varying the weir lengths Lw, contraction ratio β, contraction angle θ, and water heads H. A comparative analysis of the weirs with and without FGPs was performed. For the finite crest-length weirs with FGPs, the water-surface profiles in the flow channel were backwater curves. Moreover, the plunging jets leaving the weir became narrower and then subsequently diffused largely in the transverse and longitudinal directions in air. The discharge coefficients of the weirs with FGPs were approximately equal for various weir lengths. Moreover, following the earlier studies on traditional finite crest-length weirs, a discharge-coefficient equation was developed for the weir with an FGP in this study. The results showed that in the weirs with FGPs, the discharge coefficients clearly increased with the increase in the contraction ratio and water head, but the changes in their values along with the contraction angle were neglected.

Published
2018
Full Text
View/download PDF

2. Advances in Hydraulics and Hydroinformatics Volume 2.

Author

Zhou, Jianguo, Zhang, Jianmin, Peng, Yong, Borthwick, Alistair, and Zhou, Jianguo

Subjects
History of engineering & technology, chute aerator, spillway bottom, air concentration, air bubble frequency, air bubble chord length, evolution of precipitation, model simulation, information entropy theory, desert-oasis areas, Tarim Basin, gravity wave model, dam-break flood, image processing technology, experimental study, cavitation bubble, high-speed photography, impact pressure, micro-jet, Ningxia-Inner Mongolia, Yellow River, riverbank collapse, BSTEM model, flood &amp, dry season, sediment transport, finite crest length weir, FGP (flaring gate pier), discharge coefficient, subcritical flow, river flow modeling, sediment transport simulation, automation of flow modeling, HEC-RAS controller, python scripting, three-dimensional aerator, multi-horizontal-submerged jets, energy dissipation, near-field vibration, fluctuating pressure, gate-opening modes, collapse near a wall, double cavitation bubble, tilt distribution cavitation, parallel cavitation, pseudopotential lattice Boltzmann model, numerical simulation, pooled stepped spillway, pool weir, flow property, surface-piercing propeller, artificial ventilation, hydrodynamic performance, LES-VOF method, flow-induced vibration, plane gate, numerical analysis, bridge scour, submerged flow, physical hydraulic modeling, ski-jump flow, spillway outlet, jet trajectory, experimental model, rainfall intensity distribution, two water jets, collision in air, Gaussian distribution, trajectory line, clogging, drip irrigation, flushing, particle size distribution, sediments, submerged jets, aerated flow, plunge pool, trapezoidal cross-section, U-shaped channel, radius-to-width ratio, slope coefficient, hydraulic characteristics, hydraulic jump, Froude number, stilling basin with shallow-water cushion (SBSWC), large eddy simulation, best depth, CFD-DEM coupling, hydrocyclone, particle shape, particle size, water and sediment separation, stepped dropshaft, flow region, central angle of step, free surface measurement, optical motion capturing, tank test, wave gauge, sloshing, offset jet, potential core, decay rate, k-ε model, abutment, overtopping flow, pressure flow, scour and velocity field, Y-shaped confluence channel, non-submerged rigid vegetation, longitudinal velocity, secondary flow, turbulent kinetic energy, wetland, lattice Boltzmann method, shallow lake, drag force, water-saving irrigation development level, Sichuan province, TOPSIS method, experiment, particle image velocimetry, 3D confined wall jet, mean flow, multiple bubble collapse, pressure wave energy, energy conversion rate, consistent particle method, solitary wave, submerged breakwater, breaking wave, vortex, free surface flow, embankment weir, bridge piers, turbulence, CFD, sediment, transforming mechanism, open channel bend, velocity distribution, PIV, hyporheic exchange, surface−groundwater flow process, influencing factors, orthogonal tests, sensitivity analysis, linearly moved irrigation system, application depth, moving speed, uniformity coefficient, tidal discharge, phase difference, tidal channel junction, flow division, fluvial acoustic tomography, wavelet analysis, DEM, hydrodynamic modelling, river bathymetry, floods, Bathy-supp, coherent vortex structure, backward-facing step, synchronized PIV, separation and reattachment, free shear layer, vortical evolution
Abstract

Summary: This Special Issue reports on recent research trends in hydraulics, hydrodynamics, and hydroinformatics, and their novel applications in practical engineering. The Issue covers a wide range of topics, including open channel flows, sediment transport dynamics, two-phase flows, flow-induced vibration and water quality. The collected papers provide insight into new developments in physical, mathematical, and numerical modelling of important problems in hydraulics and hydroinformatics, and include demonstrations of the application of such models in water resources engineering.

3. Effect of Flaring Gate Piers on Discharge Coefficient for Finite Crest-Length Weirs

Author

Tian Zhong, Ruidi Bai, Nan Li, and Wang Wei

Subjects
lcsh:Hydraulic engineering, Astrophysics::High Energy Astrophysical Phenomena, Geography, Planning and Development, discharge coefficient, Aquatic Science, Biochemistry, Physics::Geophysics, Physics::Fluid Dynamics, Hydraulic head, lcsh:Water supply for domestic and industrial purposes, lcsh:TC1-978, Contraction ratio, subcritical flow, Water Science and Technology, lcsh:TD201-500, Mechanics, FGP (flaring gate pier), Dissipation, Supercritical flow, Discharge coefficient, Transverse plane, Physics::Space Physics, Weir, Crest, finite crest length weir, Geology
Abstract

The use of flaring gate piers (FGPs) along with finite crest-length weirs changes the shape of plunging jets and increases the efficiency of energy dissipation in some projects, however, the FGPs may affect the discharge capacity. In this study, the flow pattern and discharge coefficient were experimentally investigated under different conditions by varying the weir lengths Lw, contraction ratio &beta, contraction angle &theta, and water heads H. A comparative analysis of the weirs with and without FGPs was performed. For the finite crest-length weirs with FGPs, the water-surface profiles in the flow channel were backwater curves. Moreover, the plunging jets leaving the weir became narrower and then subsequently diffused largely in the transverse and longitudinal directions in air. The discharge coefficients of the weirs with FGPs were approximately equal for various weir lengths. Moreover, following the earlier studies on traditional finite crest-length weirs, a discharge-coefficient equation was developed for the weir with an FGP in this study. The results showed that in the weirs with FGPs, the discharge coefficients clearly increased with the increase in the contraction ratio and water head, but the changes in their values along with the contraction angle were neglected.

Published
2018

Catalog

Books, media, physical & digital resources
See catalog results