DualSPHysics: a numerical tool to simulate real breakwaters

Abstract

The open-source code DualSPHysics is used in this work to compute the wave run-up in an existing dike in the Chinese coast using realistic dimensions, bathymetry and wave conditions. The GPU computing power of DualSPHysics allows us to simulate real-engineering problems that involve complex geometries using high resolution at reasonable computational times. The code is first validation by comparing numerical surface elevation and time series of run-up with physical data in a wave flume. Those experiments include a smooth dike and an armored dike with two layer of cubic blocks. After validation, the code is applied to the real case, so that, wave run-up is obtained for different incident wave conditions. The use of active wave absorption allows avoiding spurious reflection from the wavemaker in order to mimic the real open sea.