コルゲート翼を有するクロスフロー風車の CFD 解析

抄録

Cross-flow wind turbine has a characteristic of high torque coefficient at low tip speed ratio, good self-starting, low noise and high stability. Therefore, it attracts attention as the city type small-sized wind turbine for urban district. However it is serious problem that the maximum power coefficient is extremely low as 10% compared with other small-sized wind turbines. In this research, in order to improve the performance of a cross-flow wind turbine, a symmetrical casing is installed to it. Then the internal flow is investigated, and the effect of the symmetrical casing on the performance of the turbine is clarified by CFD simulation. Furthermore, effects of the corrugated blade on the torque distribution and flow condition are investigated.