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通过调研国内外相关文献资料,结合实验室建设项目:侧壁边界层控制系统研制,选取相对厚度为17%的GAW—1翼型进行了风洞侧壁边界层吹除控制下气动性能的实验研究。介绍了该系统的特点和实验方法,研究了侧壁边界层吹除控制对单段和多段翼型的二元性的影响规律。结果表明:(1)对多种吹气位置不同组合来说,以前缝关闭,中缝和后缝打开吹气为最佳吹气方式;(2)不同吹气系数对模型展向中间剖面和端部剖面的压力分布影响不同,存在对应的最佳吹气系数;(3)实验研究验证了NF—3风洞侧壁边界层吹除控制系统可以有效控制侧壁边界层的干扰,改善和提高翼型气动特性实验的准确性。
Based on the investigation of relevant literatures at home and abroad, combined with the laboratory construction project: the development of sidewall boundary layer control system, the aerodynamic performance of the GAW-1 airfoil with the relative thickness of 17% the study. The characteristics and experimental methods of this system are introduced. The influence of sidewall boundary layer blowing control on the duality of single-section and multi-section airfoils is studied. The results show that: (1) For different combinations of blowing positions, the best way to blow is to close the front seam, open the middle slit and open the back seam; (2) (3) The experimental study verified that the control system of the boundary layer blowing on the side wall of NF-3 wind tunnel can effectively control the disturbance of the boundary layer on the side wall, and improve and enhance it Airfoil Aerodynamic Characteristics Experiment Accuracy.