https://scholars.lib.ntu.edu.tw/handle/123456789/485889
標題: | Reduction of unsteady blade loading by beneficial use of vortical and potential disturbances in an axial compressor with rotor clocking | 作者: | Hsu, S.T. Wo, A.M. ANDREW WO |
公開日期: | 1998 | 卷: | 120 | 期: | 4 | 起(迄)頁: | 705-713 | 來源出版物: | Journal of Turbomachinery | 摘要: | This paper demonstrates reduction of stator unsteady loading due to forced response in a large-scale, low-speed, rotor/stator/rotor axial compressor rig by clocking the downstream rotor. Data from the rotor/stator configuration showed that the stator response due to the upstream vortical disturbance reaches a maximum when the wake impinges against the suction surface immediately downstream of the leading edge. Results from the stator/rotor configuration revealed that the stator response due to the downstream potential disturbance reaches a minimum with a slight time delay after the rotor sweeps pass the stator trailing edge. For the rotor/stator/rotor configuration, with Gapl= 10% chord and Gap2= 30% chord, results showed a 60% reduction in the stator force amplitude by clocking the downstream rotor so that the time occurrence of the maximum force due to the upstream vortical disturbance coincides with that of the minimum force due to the downstream potential disturbance. This is the first time, the authors believe, that beneficial use of flow unsteadiness is definitively demonstrated to reduce the blade unsteady loading. © Copyright 1997 by ASME. |
URI: | https://scholars.lib.ntu.edu.tw/handle/123456789/485889 | DOI: | 10.1115/1.2841781 | SDG/關鍵字: | Aircraft engines; Axial flow turbomachinery; Clocks; Stators; Time delay; Unsteady flow; Axial compressors; Beneficial use; Flow unsteadiness; Force amplitude; Forced response; Suction surfaces; Unsteady loading; Vortical disturbance; Gas turbines |
顯示於: | 應用力學研究所 |
在 IR 系統中的文件,除了特別指名其著作權條款之外,均受到著作權保護,並且保留所有的權利。