Abstract
A generic oscillating water column device is analysed using the three-dimensional radiation/diffraction code WAMIT. This program is capable of computing the hydrodynamic response of offshore platforms, and other vessels of arbitrary geometrical form. The oscillating water columns (OWC) presents special problems concerning the interior domain, imposing the appropriate dynamic boundary condition on the interior free surface, and using appropriate discretizations or the exterior/interior wetted surfaces to yield accurate results. These problems are discussed, solutions described, and computations presented which facilitate the mathematical modeling of the OWC performance and the determination of wave loads on the device.