Overtopping flow velocity (OFV) and overtopping layer thickness (OTL) are essential parameters in breakwater design. Several empirical equations to predict these available many works of literature, but most the were derived based on impermeable structures such as sea dikes. In this study, we experimented with waves over a composite tetrapod armor units. experiments, wave was generated from regu...

After analysing the Wiener process characteristics of reservoir storage capacity in flood regulation, an Ito stochastic differential equation including a random input term is proposed to describe and estimate the stochastic reservoir level hydrograph in a flood routing process. An expression of risk for flood release is given and the probability density functions of the reservoir level hydrogra...

The crest level of coastal structures such as dikes and breakwaters is often based on estimates the amount wave overtopping. One important parameters affecting overtopping angle incident waves since oblique can significantly reduce compared to perpendicular attack. Based 3D physical model tests dikes, rubble mound vertical caisson breakwaters, influence attack has been evaluated. A new expressi...

The overall intent of this research is to develop numerical models of erosion of levees, dams and embankments, validated by physical models. The physical model tests were performed at 1-g and at high g’s using a geotechnical centrifuge facility. The erosion was modeled in detail, from beginning to end, that is from the time the levee was overtopped until the levee was breached. Typical quantiti...

From the numerical point of view, the complexity of the fluid dynamic processes involved has so far hindered the direct application of Navier-Stokes equations within the armour blocks, due to the complex geometry and the presence of strongly non stationary flows, free boundaries and turbulence. In the present work the most recent CFD technology is used to provide a new and more reliable approac...