Analysis of mechanical-hydraulic bedload deposition control measures

Analysis of mechanical-hydraulic bedload deposition control measures

During floods, the bedload transport of steep headwaters can exceed the hydraulic transport capacity of milder downstream reaches where settlements are often situated. Therefore, sediment retention barriers are typically installed upstream of such sensible areas. These barriers trigger bedload trapping via two control mechanisms, either hydraulic or mechanical. Both deposition controls, pertain...

Mechanical and Control Design Issues in Hydraulic Compliance Control

To be able to define a high-fidelity compliance characteristic to a legged robot using only software, with no change in the hardware, is a feature that greatly enhances the robot’s versatility. We present mechanical and control design aspects that can increase the performance of a hydraulic compliance controller. We also discuss the limitations that the load characteristics can impose to it.

Analysis of bedload transport in laminar flows

Bedload transport generally depends on the bed shear stress and Reynolds number. Many studies conducted for the condition of turbulent flows have revealed the dependence of the transport rate on the bed shear stress, while knowledge of the Reynolds number effect on the transport rate is very limited. As an extreme case to reflect the viscous effect on sediment transport, sediment transport in l...

Sensitivity Analysis of Parameter Hanges in Nonlinear Hydraulic Control Systems (RESEARCH NOTE)

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Coupled chemical-hydraulic-mechanical behaviour of bentonites