Numerical simulation of strongly nonlinear and dispersive waves using a Green-Naghdi model

We investigate here the ability of a Green-Naghdi model to reproduce strongly nonlinear and dispersive wave propagation. We test in particular the behavior of the new hybrid finite-volume and finite-difference splitting approach recently developed by the authors and collaborators on the challenging benchmark of waves propagating over a submerged bar. Such a configuration requires a model with very good dispersive properties, because of the high-order harmonics generated by topography-induced nonlinear interactions. We thus depart from the aforementioned work and choose to use a new Green-Naghdi system with improved frequency dispersion characteristics. The absence of dry areas also allows us to improve the treatment of the hyperbolic part of the equations. This leads to very satisfying results for the demanding benchmarks under consideration

Model Testing of Tension Leg Platforms -Part I: Simulation of Environmental Loading

The present paper documents the experiences of the Hydraulics Laboratory of the National Research Council of Canada in the model testing of offshore structures in general, and tension leg platforms in particular. In Part I, the experimental test facility setup for the generation of the wind loading, currents, and wave conditions is described. Techniques for the synthesis and calibration of regular and irregular long-crested waves, and multidirectional waves are discussed in detail. The description ofthe model construction, associated instrumentation and data processing methods is presented in Part II of this paper.NRC publication: Ye

Model Testing of Tension Leg Platforms -Part I: Simulation of Environmental Loading

The present paper documents the experiences of the Hydraulics Laboratory of the National Research Council of Canada in the model testing of offshore structures in general, and tension leg platforms in particular. In Part I, the experimental test facility setup for the generation of the wind loading, currents, and wave conditions is described. Techniques for the synthesis and calibration of regular and irregular long-crested waves, and multidirectional waves are discussed in detail. The description ofthe model construction, associated instrumentation and data processing methods is presented in Part II of this paper.NRC publication: Ye