Analysis of Aerodynamic Load Acting on Components of Straight-bladed Vertical Axis Wind Turbine in Parking Condition

Abstract

Studies on vertical axis wind turbine have been conducted mainly on output performance during power generation operation. On the other hand, there are few studies on the load acting on the wind turbine. Especially, the aerodynamic load acting on vertical axis wind turbine in parking condition is dominant in the design due to the extreme wind speed such as typhoon, and the clarification of the load characteristic is important for the safety design of the wind turbine. In this study, we clarified the aerodynamic load acting on the blade of straight-blade vertical axis wind turbine in parking condition with CFD analysis. At that time, we set up analysis model as in the experiment conducted in the previous research and performed CFD analysis. As a result, the analysis results generally capture the tendency of the experimental value of the change of the resultant force coefficient acting on the blade, and even if the wind speed changes, the change in the maximum value of the resultant force coefficient acting on the blade was small.