Results 21 to 30 of about 363 (168)

Standing waves of the stepped dropshaft in a deep tunnel stormwater system

open access: yesWater Science and Technology, 2023
The deep tunnel stormwater system, consisting of dropshafts and underground tunnels, is used to alleviate or prevent urban water problems associated with extreme rainfall events. The stepped dropshaft can transport surface runoff to the tunnels with high
Jingkang Sun   +4 more
doaj   +1 more source

Exotic metamorphic schist fragments in the Oligocene deposits of the Silesian nappe (Ukrainian Carpathians)

open access: yesВісник Київського національного університету імені Тараса Шевченка. Серія Геологія, 2022
The study aims at analyzing the petrographic composition of exotic metamorphic schist clasts in the Oligocene deposits filling the Silesian Nappe in the south-western part of the Ukrainian Carpathians and reconstructing their possible source area.
M. Tsar
doaj   +1 more source

Effects of Bucket Type and Angle on Downstream Nappe Wind Caused by a Turbulent Jet [PDF]

open access: yesInternational Journal of Environmental Research and Public Health, 2019
Jijian Lian, Lian Jijian
exaly   +2 more sources

A new method for reconstructing velocity field in weir flow based on binocular stereovision and particle image velocimetry

open access: yesShui kexue jinzhan, 2017
We propose a new method for reconstructing complex surface velocity field in weir flow which is notoriously difficult to measure due to its sharp drop and high fluctuation. The new method is able to map the curved flow surface by two coplanar cameras and
CAO Liekai   +4 more
doaj   +1 more source

Effect of 3D submerged jet shape on maximum pressure of plunge pool bottom

open access: yesAIP Advances, 2023
Maximum pressure is one of the key factors that affect jet scouring. Previous studies have focused on the attenuation characteristics of the submerged jet, but there are few studies on the influence of the nappe shape on the pressure of the plunge pool ...
Pengfei Xia   +4 more
doaj   +1 more source

Numerical Investigation of Nappe Flow Regime in Stepped Spillway

open access: yesEl-Cezeri Fen ve Mühendislik Dergisi, 2018
The stepped spillways consist of concrete steps on the spillway discharge channel to assist in the dissipation of the kinetic energy of the water flow. This structure reduces size or eliminates the need for an additional energy dissipator on downstream toe.
BAĞATUR, Tamer, CAN, Ömer Faruk
openaire   +4 more sources

Effects of Outlet Shrinkage on Hydraulics in Hyper-Concentrated Sediment-Laden Flow

open access: yesApplied Sciences, 2020
Finding an appropriate shape for the releasing building is thoroughly relevant given the energy dissipation and safety requirements of a high dam in a sediment-laden river.
Jijian Lian   +4 more
doaj   +1 more source

Carboniferous-Permian tectono-metamorphic evolution of the Pelvoux Massif (External Crystalline Massif, Western Alps), with discussion on flow kinematics of the Eastern-Variscan Shear Zone

open access: yesBSGF - Earth Sciences Bulletin, 2022
Based on new structural, petrological and U-Th-Pb geochronological data, a reappraisal of the Variscan tectono-metamorphic history of the Pelvoux Massif (External Crystalline Massif, French Alps) is proposed with the aim to understand the flow pattern ...
Fréville Kévin   +7 more
doaj   +1 more source

Study of Conveniency of Using Stepped Spillway in Roller Compacted Concrete Dams (RCCD) [PDF]

open access: yesEngineering and Technology Journal, 2009
A suggested design of Bastora stepped spillway has been taken as a prototype to build a physical wooden model with scale of 1:20 (Lm/Lp). Experiments have been carried out on the model with slope of upward inclined steps of 420, 280, 140 and 00.
Karim K. EL- Jumaily   +1 more
doaj   +1 more source

Geochronology and Stable Isotope Analysis of Fracture-Fill and Karst Mineralization Reveal Sub-Surface Paleo-Fluid Flow and Microbial Activity of the COSC-1 Borehole, Scandinavian Caledonides

open access: yesGeosciences, 2020
The deep biosphere hosted in fractured rocks within the upper continental crust is one of the least understood and studied ecological realms on Earth. Scarce knowledge of ancient life and paleo-fluid flow within this realm is owing to the lack of deep ...
Henrik Drake   +2 more
doaj   +1 more source

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