Reproduction of velocity time series for designing the ocean current turbine

For optimum ocean current turbine design, utilizing current velocity information is essential but the fact is there is little information and it is not organized. Equipment cost of new technology is often high, and fatigue assessment is unknown, and this applies to ocean current turbine too. Thus, in this study, a method to organize and utilize ocean current information based on spectral model is proposed and observational data is analyzed. As a result, simulated velocity has a similar statistical nature with observational data. By applying current velocity reproduced from this method, important fluctuation scale is quantified from the standpoint of design. The load on the blade in time domain is estimated as an example and it would be used for the design.