Results 11 to 20 of about 591 (207)
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
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PREDICTION OF EQUILIBRIUM SCOUR HOLES USING OPTIMIZATION PROCEDURES
Coastal Engineering Proceedings, 2020 This paper presents an optimization procedure that finds the equilibrium scour depth under a pipeline. Even though much knowledge on scour is available for the most typical marine structures such as a vertical circular monopile of a horizontal pipelines the calculation of the scour depth complex and time-consuming as the transient solution is often ...
Mandviwalla, Xerxes +2 more
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Experimental Investigation of Scour Prediction Methods for Offshore Tripod and Hexapod Foundations
Journal of Marine Science and Engineering, 2020 Scour prediction is essential for the design of offshore foundations. Several methods have been proposed to predict the equilibrium scour depth for monopiles.
Xuan Ni, Leiping Xue
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Numerical Investigations on Scour and Flow around Two Crossing Pipelines on a Sandy Seabed
Journal of Marine Science and Engineering, 2022 When a pipeline is laid on the seabed, local scour often occurs below it due to sea currents. In practical engineering, there are some cases that two pipelines laid on the seabed need to cross with each other.
Fan Zhang +5 more
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Journal of Marine Science and Engineering, 2022 This paper reviews the recent development of numerical modelling of local scour around hydraulic and marine structures. The numerical models for simulating local scour are classified into five categories: sediment transport rate models, two-phase models,
Ming Zhao
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Numerical Simulation on the Local Scour Processing and Influencing Factors of Submarine Pipeline
Journal of Marine Science and Engineering, 2023 To investigate the different influencing characteristics of local scour around submarine pipelines, hydrodynamic and sediment transport two-dimensional models based on Flow-3D are used to numerically simulate the local scour around the pipeline under ...
Ke Hu, Xinglan Bai, Murilo A. Vaz
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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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Equilibrium Scour-Depth Prediction around Cylindrical Structures [PDF]
Journal of Waterway, Port, Coastal, and Ocean Engineering, 2017 Offshore gravity base foundations (GBFs) are often designed with complex geometries. Such structures interact with local hydrodynamics, creating an adverse pressure gradient that is responsible for flow and scour phenomena, including the bed shear stress amplification.
Tavouktsoglou, NS +3 more
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Shui kexue jinzhan, 2019 The characteristics of local scour around large-diameter submerged cylinders are quite different from the non-submerged ones under combined wave and current conditions. Local scour model tests are carried out in a wave-current flume. A submerged cylinder
CHENG Yongzhou +4 more
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Journal of Marine Science and Engineering, 2023 The present study employs numerical simulations to investigate vertical wall abutment scour with different aspect ratios (B/L, where B is the abutment length in the flow direction, and L is the abutment length transverse to the flow direction) under the ...
Lalit Kumar, Mohammad Saud Afzal
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