EVALUATION OF TIDAL-OCEAN CURRENT GENERATOR FOR TSUGARU STRAIT WITH POWER GENERATION FUNCTION

Abstract

 Power generation function is mounted on “flaring flanged diffuser” and was investigated the rate of increase regarding flow speed through the diffuser by PIV method using two-dimensional model. As a result, the rate is 1.4 times in the relevant part of turbine and the increased area is equality inside of the diffuser. Besides, to grasp the effects of the magnetic flux density on the rotation of turbine and generation property, the experiment is conducted by using three-dimensional model. As a result, the generating efficiency is decline in high flow velocity that is caused by the rotating efficiency has peaked in that place and the case of excessive magnet placement, amount of power generation is the faint. Therefore, it’s essential to clarify the optimal arrangement of magnets to generate power effectively. Based on the results of experiments, amount of power generation in Tsugaru Strait is calculated to be 10~100W at the actual place.