Abstract
After the Pacific coast of Tohoku Earthquake in 2011, the necessity of tenacious coastal/harbor structure has been suggested. Although, it's necessary to experimentally examine its effects to make it in practical design. Some features of a self-propelled wavemaker proposed by the authors have been clarified, but generation of arbitrary waveforms has not been studied. In this study, the feasibility of arbitrary waveforms by a self-propelled wavemaker was examined using CADMAS-SURF/3D which is combined with the immersed boundary method. As a result, the following findings were obtained: 1) Reproducibility of an arbitrary waveform at an arbitrary point is very high by utilization of wavefront velocity and water particle velocity by shallow water wave theory, consideration of wave deformation using wavefront velocity, and correction of wave travel time. 2) As for arbitrary overflow on the structure, it was confirmed that arbitrary overflow is also sufficiently possible by considering the reflectance by the structure and the lowering of the water level due to the overflow.
