ISPH wave simulation by using an internal wave maker

The evolution of free and bound waves during dispersive focusing in a numerical and physical flume

Computational performance of a smoothed particle hydrodynamics simulation for shared-memory parallel computing

On survivability of asymmetric wave-energy converters in extreme waves

A general boundary-fitted 3D non-hydrostatic model for nonlinear focusing wave groups

. Accurate predictions of wave run-up and run-down are important for coastal impact assessment of relatively long waves such as tsunami or storm waves. Wave run-up is, however, a complex process involving nonlinear build-up of the wave front, intensive wave breaking and strong turbulent flow, making the numerical approximation challenging. Recent advanced modelling methodologies could help to overcome these numerical challenges. For a demonstration, we study run-up of non-breaking and breaking solitary waves on a vertical wall using two methods, an enhanced smoothed particle hydrodynamics (SPH) method and the traditional non-breaking nonlinear model Tunami-N2. The Tunami-N2 model fails to capture the evolution of steep waves at the proximity of breaking that was observed in the experiments. Whereas the SPH method successfully simulates the wave propagation, breaking, impact on structure and the reform and breaking processes of wave run-down. The study also indicates that inadequate approximation of the wave breaking could lead to significant under-predictions of wave height and impact pressure on structures. The SPH model shows potential applications for accurate impact assessments of wave run-up on to coastal structures.

https://nhess.copernicus.org/articles/13/3457/2013/nhess-13-3457-2013.pdf

Modelling of tsunami-like wave run-up, breaking and impact on a vertical wall by SPH method

. The impact of extreme/rogue waves can lead to serious damage of vessels as well as marine and coastal structures. Such extreme waves in deep water are characterized by steep wave fronts and an energetic wave crest. The process of wave breaking is highly complex and, apart from the general knowledge that impact loadings are highly impulsive, the dynamics of the breaking and impact are still poorly understood. Using an advanced numerical method, the Smoothed Particle Hydrodynamics enhanced with parallel computing is able to reproduce well the extreme waves and their breaking process. Once the waves and their breaking process are modelled successfully, the dynamics of the breaking and the characteristics of their impact on offshore structures could be studied. The computational methodology and numerical results are presented in this paper.

/pdf/numerical-modelling-of-extreme-waves-by-smoothed-particle-13ckmlh2gb.pdf

E. S. Chan

Papers

Modelling of tsunami-like wave run-up, breaking and impact on a vertical wall by SPH method

Numerical modelling of extreme waves by Smoothed Particle Hydrodynamics