Numerical investigation of the wave interaction with flexible vegetation: model setup and validation for a single stem study case

Abstract Aquatic flexible vegetation plays a very important role in ecosystem, and has been widely used river or coastal bank revetment. Flexible contributes to wave attenuation soil retention. In this study, fluid-structure bidirectional coupled numerical model (FSC model) was developed based on the codes in-house software HydroFlow @ study interaction between water flow vegetation. The simulated using non-hydrostatic model. Based nonlinear theory of elastic thin rod, dynamic (FV Finite Element Method (FEM) simulate large bending deformation finite extension rod. A domain method transfer contact force waves stem coupling process. FSC validated available experimental results focusing single simulation with free surface open channel simulation. were good agreements experiments. Relative errors maximum deflection less than 10%. Asymmetrical during period captured well compared measurements.