Numerical investigation of breaking wave interaction with vertical wall attached with recurved parapet using qaleFOAM

This paper presents a numerical investigation of the interaction between the breaking waves and vertical wall attached recurved parapet for both a small 1:8 scale and a large 1:1 scale model using a hybrid solver, qaleFOAM. qaleFOAM applies the domain-decomposition approach in which a two-phase incompressible Navier-Stokes (NS) solver InterFoam couples with the Quasi Lagrangian-Eulerian Finite Element Method (QALE-FEM). The practical performance of qaleFOAM is demonstrated by comparing its prediction with the experimental data, including the wave elevation and pressure on the vertical wall and recurved parapet. Good prediction of the breaking wave elevation is achieved, whilst to better address the high frequency, highly stochastic impulsive pressure problem, a compressible qaleFOAM solver should be adopted.