Results 21 to 30 of about 145,008 (321)
Experimental Study on Aspect Ratio and Velocity Intensity of Scour Around Submerged Pile Groups
Frontiers in Marine Science, 2022 Submerged pile groups are important components of complex piers in hydraulic engineering and are analogs for a range of subsea structures. These may sustain severe damages from local scour.
Youxiang Lu +9 more
doaj +1 more source
Numerical Study of the Flow and Blockage Ratio of Cylindrical Pier Local Scour
Applied Sciences, 2023 A three-dimensional large eddy simulation model is used to simulate the turbulent flow dynamics around a circular pier in live-bed and clear-water scour conditions. The Navier–Stokes equations are transformed into a σ-coordinate system and solved using a
Mario Hurtado-Herrera +4 more
doaj +1 more source
Modelling of clear water scour depth around bridge piers using M5 tree and ANN-PSO
AQUA — Water Infrastructure, Ecosystems and Society, 2023 Scouring refers to the process by which bed sediment in a river is eroded around the periphery of a bridge abutment or pier. Many empirical models are available to estimate the scour depth for different flow, geometry, and bed roughness condition ...
Amarjeet Kumar +2 more
semanticscholar +1 more source
Clear Water Scour around at a Piano Key Side Weir of the Type A at 120° Section of a 180° Curved Channel [PDF]
پژوهشهای زیرساختهای عمرانی, 2022 A side weir is a hydraulic control structure used in irrigation and drainage systems and combined sewer systems. The Piano Key Weir (PKW) is a new type of long crest weirs that have a relatively simple structure and high economic efficiency structures ...
Mehdi Jamshidi +3 more
doaj +1 more source
Soft Computing - A Fusion of Foundations, Methodologies and Applications, 2021 This paper presents the results of an investigation on scour around pile groups under steady currents using artificial intelligence (AI) models. Namely, EPR (Evolutionary Polynomial Regression), GEP (Gene-Expression Programming), MARS (Multivariate ...
M. Najafzadeh, G. Oliveto
semanticscholar +1 more source
Effect of debris accumulation on scour evolution at bridge pier in bank proximity
Journal of Hydrology and Hydromechanics, 2021 Large debris transported by flood affects scour features at bridge piers and increases the risks of structural failure. Geometric characteristics of the debris and the relative position of the pier with respect to the river bank are important parameters ...
Palermo Michele +2 more
doaj +1 more source
Effects of bed-material gradation on clear water scour at single and group of piles
Journal of Hydrology and Hydromechanics, 2022 This study presents the results of 32 laboratory experiments on local scour at a single pile and a 1 × 4 pile group for both uniform and non-uniform sediments under clear water conditions.
S. Okhravi, S. Gohari, M. Alemi, R. Maia
semanticscholar +1 more source
Local Scour Around The Cylindrical Bridge Pier With Two Sizes of Bed Material [PDF]
علوم و مهندسی آبیاری, 2015 Local scour around the bridge piers results from the flow impact with bridge piers and it’s streamline separation. The scour hole around the bridge piers depend on the hydraulic characteristics of the flow, the specifications of the fluid, the pier’s ...
Narges Raeisi, Mehdi Ghomeshi
doaj +1 more source
Hydrology, 2022 River bridge piers may collapse due to the local scour around their foundations. It is known that local scour is an effect of the three-dimensional flow field that develops near the pier and that the geometric complexity of a non-cylindrical pier may ...
Mahdi Esmaeili Varaki +2 more
semanticscholar +1 more source
Experimental investigation of the angle effect of the cylindrical bridge group piers relative to the flow direction on the maximum scour depth of the piers [PDF]
علوم و مهندسی آبیاری, 2022 Bridges are one of the important structures in the field of land communication. With the construction of these structures in the river, a flow pattern with a three-dimensional structure is formed in the vicinity of its piers, and as a result of ...
Behnam Pourghasemzadeh, Mehdi Ghomeshi
doaj +1 more source