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 引用本文: 袁巍, 周盛, 陆亚钧等 . 压气机间隙流与处理机匣作用的三维数值分析[J]. 北京航空航天大学学报, 2004, 30(09): 885-888.
Yuan Wei, Zhou Sheng, Lu Yajunet al. 3D numerical analysis for the effect between tip clearance and casing treatment in turbomachinery[J]. Journal of Beijing University of Aeronautics and Astronautics, 2004, 30(09): 885-888. (in Chinese)
 Citation: Yuan Wei, Zhou Sheng, Lu Yajunet al. 3D numerical analysis for the effect between tip clearance and casing treatment in turbomachinery[J]. Journal of Beijing University of Aeronautics and Astronautics, 2004, 30(09): 885-888. (in Chinese)

压气机间隙流与处理机匣作用的三维数值分析

• 中图分类号: TK 4748+1; O 3571

3D numerical analysis for the effect between tip clearance and casing treatment in turbomachinery

• 摘要: 利用Numeca CFD对某一压气机静子叶栅的间隙流动进行流场计算,并将其与具有圆弧斜槽处理结构的间隙及流场计算结果进行对比、分析.详细揭示了叶栅顶部间隙区及处理槽内的流动特征.结果表明,通过采用机匣处理,改变了压气机气流流路,形成叶尖漏流的通道,减少漏流下洗对叶片通道造成的阻塞.叶尖附近主流在叶盆尾缘气流高压作用下进入斜槽,而后气流在叶背前缘以高速由斜槽射入主流,该高速射流有效地扫除叶尖易失速的附面层,从而延迟气流分离,扩大压气机的失速裕度并减少二次流损失.这种籍助于动量交换而形成高速射流对主流的作用可能是机匣开槽结构改善失速裕度的主要原因.

•  [1] Koch C C. Experimental evaluation of outer case blowing or bleeding of single stage axial flow compressor . NASA CR-54592, 1970 [2]Hall E J, Crook A J, Delaney R A. Aerodynamic analysis of compressor casing treatment with a 3-D navier-stokes solver . AIAA Paper 94-2796,1994 [3] 李 玲. 轴流压气机机匣处理的数值模拟与实验研究 . 北京:北京航空航天大学动力系,1998 Li Ling. Numerical simulation and experimental research on casing treatment of axial flow compressor . Beijing:Dept of Jet Propulsion,Beijing University of Aeronautics and Astronautics,1998(in Chinese) [4] Wilke I, Kau H P. A numerical investigation of the influence of casing treatments on the tip leakage flow in a hpc front stage . ASME Paper, GT-2002-30642,2002

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出版历程
• 收稿日期:  2003-06-05
• 刊出日期:  2004-09-30

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