ダリウス型水車のガイド形状が性能に与える影響

抄録

The increase on environmental concern has made current water turbine for tidal power generation to become one of the best adapted solutions to the energy needs of society. In this paper, the relationship between the fluid force of blade and flow field around blade with or without the guide was analyzed using CFD method. In this university, it has been reported that the performance could be improved using cylindrical guide inside the wind turbine, but the guide has not been application to tidal current power generation water turbine. It was clarified that the flow around the blades of the water turbine on condition that chord length l_c=50[mm] and number of blades N=3 eased by using the elliptical guide with the long diameter and the short diameter of r_a/l_r=0.5, r_b/l_r =0.25.