Results 21 to 30 of about 35,344 (313)
Numerical modelling of erosion and sedimentation around offshore pipelines [PDF]
, 1990 In this paper a numerical model is presented for the description of the erosion and sedimentation near pipelines on the sea bottom. The model is based on the Navier-Stokes equations and the equation of motion and continuity of sediment.\ud \ud The ...
Beek, F.A. van, Wind, H.G.
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Effect of Cohesive and Non-Cohesive Soils on Equilibrium Scour Depth
Tikrit Journal of Engineering Sciences, 2007 In this research ,the effect of cohesive soils ( clay ) and non –cohesive soils sand on equilibrium scour depth was studied .Experiments were carried out on two types of clay and two types of sand as a bed material using an obstruction ( pier ) to create
Saleh Issa Khassaf
doaj +1 more source
A local scour prediction method for pile caps in complex piers [PDF]
, 2011 The outcomes of an experimental study on local scour at a pile cap are presented. Experiments were conducted with the approaching flow having an undisturbed flow depth and a threshold flow velocity.
Abdul Aziz, Azlan +4 more
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Clear-water scour at comparatively large cylindrical piers [PDF]
, 2013 New long-duration clear-water scour data were collected at single cylindrical piers with the objective of investigating the effect of sediment coarseness, Dp=D50 (Dp = pier diameter; D50 = median grain size) on the equilibrium scour depth and improving ...
António H. Cardoso +6 more
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Ain Shams Engineering Journal, 2013 Local scour downstream stilling basins is so complex that it makes it difficult to establish a general empirical model to provide accurate estimation for scour depth. Lack estimation of local scour can endanger to stability of hydraulic structure and can
Yasser Abdallah Mohamed Moussa
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Impact of takeoff angle of bucket type energy dissipater on scour hole [PDF]
, 2008 Scour holes formed downstream of bucket type energy dissipater may affect the safety and stability of the structure. In this study, a physical model is employed to study the impact of takeoff angle of bucket type energy dissipater on the scour hole.
Alias, Nor Azlina +3 more
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Empirical Formulas to Predict the Maximum Scour Depth With Debris Accumulation Around A Single Cylindrical Bridge Pier: An Experimental Study [PDF]
Engineering and Technology Journal, 2020 The probability of debris accumulation near bridge piers during the heavy storm and river flood convert the hydraulic action of flow and increase the scour depth due to the reduction of flow area and the increase in velocity of flow.
Mahmoud Saleh Al-Khafaji, Aysar Al-Awadi
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Preliminary comparison of scour depth estimation methods
, 2022 Bridge scour is a major cause of bridge collapse worldwide. Various approaches are available to estimate levels of scouring due to hydraulic loading. Such scour depth assessment methodologies typically employ a series of empirical and semi-empirical equations to estimate scour around a bridge element.
Gavriel, Gianna +2 more
openaire +3 more sources
Geosciences, 2019 Local scour is a dynamic process evolving during the lifetime of bridges as a result of the changes in hydrologic and hydraulic conditions. Current approaches for scour risk assessment are generally based on the evaluation of the equilibrium scour depth ...
Alonso Pizarro, Enrico Tubaldi
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Shock and Vibration, 2020 As a cross-sea or river deep-water foundation, it is clear that the caisson foundation will be subjected to significant lateral dynamic loads due to winds or waves and suffer from scouring under its long-term effect.
Wenbo Tu +3 more
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