【摘 要】
：
As the rated power of a wind turbine increases, the blade thereof becomes slender and slender, thus making the aeroelastic problem of the blade significant due to the strong interaction between the bl
【机 构】
：
Design Assessment Center, China Classification Society certification company, Beijing, P.R.China
【出 处】
：
2010中国可再生能源科技发展大会
论文部分内容阅读
As the rated power of a wind turbine increases, the blade thereof becomes slender and slender, thus making the aeroelastic problem of the blade significant due to the strong interaction between the blade and the airflow.The developed model adopts Marc as a fundamental platform, the blade improved element momentum theory and beam element are chosen as aerodynamic and blade model respectively and the dynamic stall model is used to the blade element momentum theory to calculate the aerodynamic force, the program of aerodynamic calculation is written into subroutine of Marc, which could realize the exchange of fluid and structural boundary conditions in each increment.Based on the response of the blade with a rated rotary speed at rated wind speed, the effect of amplitude of rotation response and 1 st torsional frequency distribution on blade flutter stability is discussed and researched in this paper, which draws a conclusion that the control on the torsional stiffness and rotation amplitude is very important for ensuring vibration stability.
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