Results 21 to 30 of about 591 (207)
Evolution features of riverbeds near underwater crossing line pipes: An experimental study
Natural Gas Industry B, 2020 It is of important significance to study the evolution law of the riverbed near underwater crossing line pipes for ensuring the safe operation of oil and gas pipelines and reducing the risk of damage by water flood disasters.
Qian Yang +3 more
doaj +1 more source
Study on time development of horse-shoe vortex diameter and shear stress at bridge pier [PDF]
مهندسی منابع آب, 2020 Horse-shoe vortex at the bridge pier nose is a final result of reverse pressure gradient at the upstream side of pier and river surface. From literature review different ideas about the formation and initiation of horse-shoe vortex at the bridge pier can
Mojtaba Karimaei Tabarestani
doaj
Elliptical guide banks scour : equilibrium stage
RURAL DEVELOPMENT 2019, 2013 The damage of the bridge foundations, in the river flow, because of scour leads to considerable economic and environmental losses The equilibrium stage of scour near guide banks with a uniform layer and stratified bed conditions have been studied. At present, no methods are available for computing the depth of a local scour near the bridge crossing ...
Gjunsburgs, Boriss +2 more
openaire +2 more sources
Equilibrium scour morphology downstream of rock sills under unsteady flow conditions
E3S Web of Conferences, 2018 The present study aims to analyze the equilibrium scour morphology occurring downstream of rock-made sills with different shapes, under different inflow conditions. Namely, experimental tests were conducted under both steady and unsteady flow conditions.
Pagliara Stefano, Palermo Michele
doaj +1 more source
Local scour at offshore windfarm monopile foundations: A review
Water Science and Engineering, 2022 In this article, current research findings of local scour at offshore windfarm monopile foundations are presented. The scour mechanisms and scour depth prediction formulas under different hydrodynamic conditions are summarized, including the current-only
Da-wei Guan +5 more
doaj +1 more source
Experimental study of river morphology downstream of the inclined and vertical grade control structures [PDF]
Journal of Hydraulic StructuresGrade control structure (GCS) can be used to reduce erosion in river beds. They decrease the river bed scour by changing the flow regime and reducing its velocity.
Seyed Mohamad Mahdi Shariati +1 more
doaj +1 more source
Estimation of scour depth at a single non-submerged vertical spur dike under unidirectional currents
Water Science and EngineeringAccurately estimating equilibrium scour depths at spur dikes remains challenging due to the complexity of scour around these structures. Scour critically threatens spur dikes built in river estuaries for enhancing navigability and preventing bank erosion.
HtayHtay Aung +4 more
doaj +1 more source
Efficient Adsorption‐Based Direct Air Capture Via Triply Periodic Minimal Surface Architectures
Advanced Science, EarlyView.Architected triply periodic minimal surface (TPMS) contactors reshape direct air capture by replacing straight‐channel diffusion limits with convection‐enhanced CO2 transport. Chaotic advection thins boundary layers and exposes fast adsorption sites, enabling 70%–75% more fast sites, 114% higher productivity, and 51.8% lower energy consumption than ...
Qingyang Shao +6 more
wiley +1 more source
Advances in Civil Engineering, 2021 Among the various geological disasters that threaten the safe operation of long-distance oil and gas pipelines, water-damage disasters are numerous and widely developed.
Fan Cui +5 more
doaj +1 more source
Journal of Marine Science and Engineering, 2021 A series of laboratory experiments were conducted in a wave-current flume to investigate the scour evolution and scour morphology around tripod in combined waves and current.
Ruigeng Hu +3 more
doaj +1 more source