Bed-Shear Stress in Turbulent Wave-Current Boundary Layers [PDF]
Journal of Hydraulic Engineering, 2008 An approach for calculating turbulent flows in a wave-current boundary layer over a slowly varying bed is presented. Waves are periodic in time with several harmonics. In this paper, we adopt a time invariant eddy viscosity model, in which the eddy viscosity is linearly proportional to the distance from the bed.
Simarro, Gonzalo +2 more
openaire +2 more sources
Wave-Current Impact on Shear Stress Patterns around 3D Shallow Bedforms
Journal of Marine Science and Engineering, 2022 Observations from wave basin experiments and wave-resolving numerical simulations demonstrate the effect of wave-current interaction on shear stress around a sandy mound.
Julia Hopkins +3 more
doaj +1 more source
Bed-Shear Velocity Measurement in Curved Open Channel
Civil and Environmental Science Journal, 2021 Generally, the condition of the rivers in Indonesia are alluvial rivers which had meanders, where the change in the river bed topography often occur.
Sumiadi Sumiadi +3 more
doaj +1 more source
Vertical structure of near-bed cross-shore flow velocities in the swash zone of a dissipative beach [PDF]
, 2015 Cross-shore velocity profiles are measured at 0.001m vertical resolution and at 100Hz over the lower 0.02-0.07m of the water column in the mid swash zone on a dissipative, macrotidal beach.
Conley, DC +4 more
core +2 more sources
Critical conditions of bed sediment entrainment due to debris flow [PDF]
Natural Hazards and Earth System Sciences, 2004 The present study describes entrainment characteristics of bed material into debris flow, based on flume tests, numerical and dimensional analyses. Flume tests are conducted to investigate influences of bed sediment size on erosion rate by supplying ...
M. Papa, S. Egashira, T. Itoh
doaj
Growth of Debris Flows by Soil Bed Erosion: Effects of Frictional and Hydrodynamic Shear Stresses [PDF]
E3S Web of Conferences, 2023 Debris flows are complex solid-fluid mixtures, which travel downslope under the influence of gravity. The destructive potential of a debris flow is governed by its volume and speed, both of which can be significantly enhanced by the erosion of soil bed ...
Song Pengjia, Choi Clarence
doaj +1 more source
Shear stress in smooth trapezoidal channel [PDF]
علوم و مهندسی آبیاری, 2009 Laboratory experiments were conducted in smooth trapezoidal channel with side slope 1:1 to measure boundary force and shear stress. Preston tube is used to estimate contribution of wall and bed shear stresses.
Arash Jael +4 more
doaj +1 more source
Quantification of bed-load transport over dunes
E3S Web of Conferences, 2018 There is disagreement in the literature as to whether a shear stress-based approach can be used to accurately predict sediment transport over dunes. This study aims to address this disagreement.
Lockwood Kenneth +2 more
doaj +1 more source
Lateral sediment sources and knickzones as controls on spatio-temporal variations of sediment transport in an Alpine river [PDF]
, 2013 Modern mixed alluvial-bedrock channels in mountainous areas provide natural laboratories for understanding the time scales at which coarse-grained material has been entrained and transported from their sources to the adjacent sedimentary sink, where ...
Attal, Mikaël +3 more
core +1 more source
Influence Mechanism of Geomorphological Evolution in a Tidal Lagoon with Rising Sea Level
Journal of Marine Science and Engineering, 2022 A tidal lagoon system has multiple environmental, societal, and economic implications. To investigate the mechanism of influence of the geomorphological evolution of a tidal lagoon, the effect of critical erosion shear stress, critical deposition shear ...
Cuiping Kuang +5 more
doaj +1 more source