ABSTRACT
A Boundary Element Method developed by Belibassakis (2008) and Belibassakis et al (2016, 2018) is used, in conjunction with a Coupled Mode Model and Perfectly Matched Layer model (see also Belibassakis et al 2001) for the solution of the propagation/diffraction/radiation problems of floating bodies in variable bathymetry regions. An important feature of the methodology is that it is free of mild-slope assumptions and restrictions. The present work extends previous results presented by Belibassakis et al (2018) in the case of heaving floater with vertical cylindrical or axisymmetric bodies over a region of general topography to the case of multiple degrees of freedom. Numerical results concerning the details of the wave field and the power output are presented and discussed concerning shape and PTO optimization considering heave in conjunction with pitch oscillation modes indicating possible increase of performance.
