OBSERVATION AND NUMERICAL SIMULATION OF TIDAL CURRENT AROUND AMAMI-OSHIMA IN RELATION TO TIDAL POWER GENERATION

Abstract

 The tidal currents around Amami-oshima Island were examind in relation to tidal current power generation using the results of ADCP Observation and numerical simulation. We fonud the tidal current power of 1.5 kW/m² in the Oshima Strait and 1.7 kW/m² in the Yorojima Channel. Moreover, it was shown from the numerical simulation for the case of arrayed 20 tidal current turbines in the Oshima Strait that the daily mean value of extractable tidal energy is 19 MW and the amplitudes of tidal currents are reduced about 20 %.