Results 151 to 160 of about 424 (174)

Theoretical approach for the equilibrium scour depth underneath a partially submerged bridge deck

Physics of Fluids
The destructive implication of pressure-flow scour during flood events is a critical issue for researchers throughout the world. The current paper presents two models to estimate the pressure-flow scour depth underneath a partially submerged bridge deck in the equilibrium phase based on the jet flow theory.
Mostafa Koushki, Mohammad R. Chamani, Mohammad N. Moghim   +2 more
openaire   +1 more source

Generalized scaling law of equilibrium scour depth at a cylinder embedded in an erodible bed

Physics of Fluids
Turbulent stream approaching a cylinder embedded in an erodible bed triggers significant erosion to form a scour hole. We present a generalized scaling framework for the equilibrium scour depth at a circular cylinder by means of the similarity principle and discover that the similarity exponent can be uniquely determined through the turbulence ...
Sk Zeeshan Ali, Subhasish Dey
openaire   +1 more source

Neurofuzzy-Based GMDH-PSO to Predict Maximum Scour Depth at Equilibrium at Culvert Outlets

Journal of Pipeline Systems Engineering and Practice, 2016
AbstractIn this study, the neurofuzzy-based group method of data handling (NF-GMDH) as an adaptive learning network was utilized to predict the maximum scour depth at equilibrium downstream of culvert outlet structures. The NF-GMDH network was developed using particle swarm optimization (PSO).
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Prediction of equilibrium scour depth in uniform non-cohesive sediments downstream of an apron using computational intelligence

European Journal of Environmental and Civil Engineering, 2016
Accurate prediction of equilibrium scour depth downstream of hydraulic structures has an important role in their appropriate design. In this paper, the applicability of artificial neural networks (ANNs) and adaptive neuro-fuzzy inference system (ANFIS) models in prediction of equilibrium scour depth is studied.
Afshin Eghbalzadeh, Mohsen Hayati, Abbas Rezaei, Mitra Javan   +3 more
openaire   +1 more source

Assessment of equilibrium pressure-flow scour depth using jet flow theory

International Journal of Sediment Research, 2023
Mostafa Koushki, Mohammad R. Chamani, Mohammad N. Moghim   +2 more
openaire   +1 more source

Discussion of “Equilibrium Depth of Scour in Long Constrictions”

Journal of the Hydraulics Division, 1967
David I. H. Barr, John G. Herbertson
openaire   +1 more source

Enhancing Prediction of Equilibrium Scour Depth Around Bridge Piers Using Staking Machine Learning Models

Earth Systems and Environment
Scouring is a natural phenomenon in water bodies that exposes an inevitable risk to hydraulic structures. This study proposes a stacking method for estimating equilibrium scour depth around bridge piers for enhancing sustainable and safety design.
Piraei, Reza, Niazkar, Majid, Cislaghi, Alessio, Afzali, Seied Hossein, Mohammadi, Ali   +4 more
openaire   +2 more sources

Fluctuating Frequency of Live Bed Scour Depth around Submerged Weirs at Equilibrium Stages

Journal of Hydraulic Engineering, 2022
Dawei Guan, Lu Wang, Li Ma, Bruce W. Melville   +3 more
openaire   +1 more source

Bed mobility of gravel rivers: mobilization (scour) depth of chum salmon redds, and equilibrium bedload transport

2009
This thesis is an investigation of bed mobility in gravel-bed rivers. In particular, two hypotheses are addressed: 1) that mobilization (scour) depth in salmon egg nests (redds) differs from that of surrounding bed, and 2) that equilibrium bedload transport rate in gravel-bed rivers can be predicted by assuming equal mobility and accounting for ...
openaire   +1 more source

Equilibrium Depth of Scour in Long Constrictions

Journal of the Hydraulics Division, 1966
openaire   +1 more source