Vortex formation in wave-submerged structure interaction

Majorcatic and solitary wave cases passing over submerged structure is then studied. For the monochromatic scenario, the model agrees very well with the free surface experimental data, and a ”Linear fluid structure interaction mechanism” can be observed based on the structure geometry and the absence of adverse pressure gradient in the flow. For the solitary wave case interacting with a slender column, the numerical model agrees very well with the measurements, showing that an adverse pressure gradient in the flow is presented and the vortex in the flow induces a wave breaking process, not by the bottom friction, nor by water depth reduction but by a strong transport of mass from upstream to downstream side of the vortex; this turbulent structure is the dominant process, even when the wave breaking is present.