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Flow Patterns and Turbulence Structures in a Scour Hole Downstream of a Submerged Weir
Publisher: American Society of Civil Engineers
Abstract: Scouring downstream of submerged weirs is a common problem resulting from the interaction of the three-dimensional turbulent flow field around the structures and the mobile channel bed. This paper presents the distributions ...
Live-Bed Scour at Submerged Weirs
Publisher: American Society of Civil Engineers
Abstract: Weirs or bed sills are low-head hydraulic structures used for bed stabilization, raising upstream water level, and reducing flow velocity. During high-flow events, the weir is fully submerged in the river and scouring ...
Temporal Evolution of Clear-Water Scour Depth at Submerged Weirs
Publisher: ASCE
Abstract: Equilibrium clear-water scour depths predicted by existing equations based on the peak flow rate of a flood hydrograph can be overly conservative for submerged weirs in mild-slope sandy rivers, because the equilibrium ...
Particle Entrainment from a Rectangular Cavity in Open-Channel Flows
Publisher: ASCE
Abstract: Past researchers have studied particle entrainment on a flat-bed and the flow fields in a rectangular cavity without considering particle entrainment. However, particle entrainment from a rectangular cavity, which hitherto ...
Fluctuating Frequency of Live Bed Scour Depth around Submerged Weirs at Equilibrium Stages
Publisher: ASCE
Abstract: Previous studies have primarily focused on the estimation of equilibrium scour depths around weirs, while overlooking the details of the temporal evolution of the live bed scour process of submerged weirs at the equilibrium ...
Hydrodynamic Uplift Forces on Submerged Bridge Decks during Bedform Migration
Publisher: ASCE
Abstract: Hydrodynamic forces, especially uplift forces, during a flood event are critical to the stability of bridge superstructures. This study focuses on the interaction between the migrating dunes, the scour depth beneath the ...
Clear-Water Scour Mechanism at Vibrating Monopile Foundations
Publisher: ASCE
Abstract: Cyclic lateral loads on monopile foundations of offshore wind turbines induce vibrations that affect the clear-water scour process around the foundations. Previous experimental studies showed that the current-induced ...
Local Scour and Flow Characteristics around Pipeline Subjected to Vortex-Induced Vibrations
Publisher: ASCE
Abstract: Although local scour around submarine pipelines has been extensively studied in the last few decades, understanding of the mechanism of local scour around pipelines is still in its infancy stage due to the complex nature ...
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