... condition is needed at infinity in order to make the wave solution unique. time interval linear wave equation left-hand side radiation condition field condition van daalen wave-structure interaction problem numerical calculation bernoulli pressure lagrangian density nonlinear wave problem...

... even for highly nonlinear waves. The main diffi- culties arise from the radiating boundaries and the intersection of the free surface and the fixed or floating body. bottom-mounted surface wave diffraction free surface condition boundary horizontal force van daalen diffraction...