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根据翼剖面理论,采用同步测压技术,建立风力机叶片气动载荷实验装置。以叶片5种不同的变形状态,在6种迎角和3~10m/s来流风速的情况下正交实验,得到风力机叶片在不同风速、不同迎角下的气动载荷数据,应用Tecplot处理得到叶片表面升力系数云图。初步揭示叶片的弯曲变形对其气动载荷及受力特性的影响规律,并探索迎角与叶片受力特性的关系。叶片在一定的弯曲变形范围内,随着弯曲曲率的增大,叶片的升力增大;但当叶片弯曲变形过大时,压力面的流动损失增加,叶片升力减小。
According to the wing profile theory, the synchronous pressure measurement technology is used to establish the aerodynamic load experimental device of the wind turbine blade. The aerodynamic loads of wind turbine blades under different wind speeds and angles of attack were obtained by orthogonal experiments with five different deformation states of the blades at 6 angles of attack and 3 ~ 10 m / s of incoming wind speed. Tecplot processing Get the blade surface lift coefficient cloud. The influence law of the bending deformation of the blade on its aerodynamic load and force characteristics is revealed, and the relationship between the angle of attack and the force characteristics of the blade is explored. When the blade bending deformation is too large, the flow loss of the pressure surface increases and the lift of the blade decreases.