Host: The Japan Society of Mechanical Engineers
Name : [in Japanese]
Date : June 17, 2024 - June 18, 2024
Savonius wind turbines have attracted attention to generate electric power in urban areas subject to high turbulence. To further improve the performance, we designed a spherical Savonius turbine expecting robustness to the change in wind direction and speed. The inflow angle was varied between 0 and 180 degrees. In addition, the performance was compared between the inflow with low turbulence intensity (1%) and high turbulence intensity (18%) using an open-jet wind tunnel. The rotational speed measured by a tachometer shows that the idling tip speed ratio increases in the high turbulence. Furthermore, the spherical Savonius turbine showed a better performance than the conventional Savonius turbine when the inflow angle is high. Further, the spherical Savonius turbine exhibited a much improved performance in turbulence, indicating it is more suitable in the urban environment than the conventional Savonius turbine.
