Boundary element analysis method for water impact

The paper describes the boundary element analysis method for the water impact of an arbitrarily shaped section.Computational method for the nonlinear solution, which is the initial condition of the free surface for the simulation of the fully-nonlinear wave-body interactions, is proposed. For stable computation on the water impact problem, the time-step division and the element length are decided in a practical manner. Computational treatment of the intersection of the free surface with the body is discussed and the numerical technique is proposed for the simulation of nonviscous flow separation.