叶片扰流板安装容差气动性能影响研究

Study on Installation Tolerance of Aerodynamic Performance of Blade Spoiler

为进一步提高风电机组的发电能力,需要在叶片局部安装如VG、扰流板等附件用于提高其气动性能。由于附件为叶片下线后进行安装,为确保附件的有效性,需要对附件本身的加工精度以及安装精度等进行控制。以扰流板为例,明确关键等效参数,进行基于工艺偏差的扰流板气动性能影响研究。首先,按照设计要求明确关键影响参数;其次,对关键影响参数进行模型等效;再次,开展基于面元法及BEM的叶片扰流板偏差影响分析;最后,给出了允许的扰流板安装后容差范围,为下一步的流动控制优化设计验证奠定基础。

In order to further improve the wind turbine generating capacity,it is necessary to install some accessories such as VG and spoiler on the blade to improve its aerodynamic performance.Since the attachment is installed after the blade is off-line,it is necessary to control the machining accuracy and installation accuracy of the attachment itself to ensure the effectiveness of the attachment.Taking the spoiler as an example,the influence of key equivalent parameters on the aerodynamic performance of the spoiler is studied based on process deviation.Firstly,the key influence parameters are defined according to the design requirements;secondly,the model of the key influence parameters is equivalent;thirdly,the influence analysis of blade spoiler deviation based on panel method and Bem is carried out;finally,the allowable tolerance range of the spoiler after installation is given,which lays a foundation for the next step of flow control optimization design verification.