On the Handling of Moonpool Resonances by Green’s Function Methods

In this paper, we will investigate the numerical treatment of irregular frequencies and moonpool resonance by using a Green’s function method. We will look at the interaction of these two resonances and how much the moonpool resonance will influence other results. We will also look at the importance of the meshing including the addition of a mesh in the moonpool. Such a mesh is normally only used when we want to include damping of the moonpool resonance, but it will be shown that including this mesh may be beneficial also without damping. In addition to the wave elevation in the moonpool we will also investigate the effect of the moonpool resonance on the motions, sectional loads and mean drift forces.