A numerical wave tank that specialized to Navier-Stokes equation was established by a CIP (Constrained Interpolation Profile) method in present study. The numerical model is used to simulate the strongly nonlinear interaction between the solitary wave and a horizontal two-dimensional plate. Most of all, hydrodynamic forces acting on the plate due to solitary wave are investigated in both submerged cases and elevated cases. Sufficient numerical simulations with parameters varied, including different water depths, submergence depths, elevations above the still water level and wave amplitudes are carried out. The time series for hydrodynamic forces and the extremum of horizontal and vertical force are presented in this paper for some significant conclusions. The numerical results are compared with experimental data is in good agreement.
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