Variability of Bed Drag on Cohesive Beds under Wave Action

Variability of Bed Drag on Cohesive Beds under Wave Action

Abstract: Drag force at the bed acting on water flow is a major control on water circulation and sediment transport. Bed drag has been thoroughly studied in sandy waters, but less so in muddy coastal waters. The variation of bed drag on a muddy shelf is investigated here using field observations of currents, waves, and sediment concentration collected during moderate wind and wave events. To es...

Ball Indentation on Cohesive Powder Beds

13 In the shear deformation of powder beds beyond the quasi-static regime the shear stress is dependent 14 on the strain rate. Extensive work has been reported on the rapid chute flow of large granules but the 15 intermediate regime has not been widely addressed particularly in the case of cohesive powders. 16 However in industrial powder processes the powder flow is often in the intermediate r...

Influence of wave action on Mytilus californianus mussel beds

2D NUMERICAL MODELING OF WAVE TRANSFORMATION ON SOFT MUDDY BEDS

The present paper offers a numerical model which can be applied for the simulation of wave height distribution on a 2-D horizontal soft mud layer. The model is based on mild slope equations and it includes combined wave refraction, diffraction, reflection and breaking. The high energy dissipation of wave height due to the presence of fluid mud layer has also been simulated. Wave height attenuat...

Wave drag on floating bodies.

We measure the deceleration of liquid nitrogen drops floating at the surface of a liquid bath. On water, the friction force is found to be about 10 to 100 times larger than on a solid substrate, which is shown to arise from wave resistance. We investigate the influence of the bath viscosity and show that the dissipation decreases as the viscosity is increased, owing to wave damping. The measure...