Estimation of sea wave impact on coastal structures 

DualSPHysics has been validated against experimental data from physical model tests carried out at Ghent University, Department of Civil Engineering (Belgium). The experimental campaign studied the response of new coastal defenses proposed for the Belgian coast, in particular for Blankenberge Marina.

The forces are exerted by waves that approach the existing dike on top of which a new storm return wall is built. The storm wall is not located on the seaward edge of the dike, as common, but at a certain distance between the seaward and the landward ends of the existing defense. The design storm conditions correspond to a storm with a return period of about 1,000 years. A 1:5 model scale was used for the physical model tests in this case. The significant wave height, Hm0, is equal to 0.101 m and the peak period Tp is 2.683 s, both quantities expressed in model scale. The water depth at the wave paddle is 0.639 m in the model. The numerical flume has been built to resemble the physical one with interparticle distance of  0.01 m leading to 126,200 particles.

A close agreement is shown between numerical solutions (represented by a red line) and the experimental signal (represented by a black line) both for water surface elevation (in WG2) and wave forces exerted on the vertical wall. The present case represents one of the first successful attempts of application of DualSPHysics to assess wave forces for real coastal defenses. 




More information in:

Altomare C, Crespo AJC, Domínguez JM, Gómez-Gesteira M, Suzuki T, Verwaest T. 2015. Applicability of Smoothed Particle Hydrodynamics for estimation of sea wave impact on coastal structures. Coastal Engineering, 96: 1-12. doi:10.1016/j.coastaleng.2014.11.001.