【摘要】 在低速大尺寸叶栅风洞上通过详细测量叶栅流场,研究了叶栅端壁上不同周向位置处加装端壁翼刀对压气机叶栅损失和二次流的影响。实验结果表明,合理选择翼刀安装位置,可有效地控制压气机叶栅的二次流,降低叶栅的总损失。进一步对实验方案中叶栅总损失最小的翼刀位置的叶栅内流场进行了测量,分析了安装翼刀后流场内涡系结构的变化,探讨了翼刀涡的形成和发展变化。更多还原

【Abstract】 The affect of endwall fences at different locations on compressor cascade loss and secondary flow were investigated through detailed experimental investigation in a low speed wind tunnel.The results show that the secondary flow in the compressor cascade can be controlled effectively and the total cascade loss can be reduced in case of the proper selection of the end wall fence location.Through the measurement of the cascade internal flow with the optimum fence location in terms of minimum loss,the vortices in the cascade with endwall fence were analyzed.The formation and development of the endwall fence vortices were also discussed.更多还原