Host: The Japan Society of Mechanical Engineers
Name : [in Japanese]
Date : September 11, 2022 - September 14, 2022
In this study an oscillating water column device utilizing a double slit breakwater is focused. Former research clarified that the oscillating water-column wave generator installed in a double-slit breakwater has qualitative characteristics similar to those of a two-degree-of-freedom vibration system in which the water column in the slit playroom is considered the mass point. In order to simulate these characteristics as a superposition of modes, the modal damping ratio, eigenangular frequency, and mode amplitude ratio are obtained. For this purpose, free vibration experiments were conducted on a power generation system, parameters were identified using variational mode decomposition, and simulations were performed from these parameters to reproduce waveforms similar to the experimental results.
