Analysis of Rotor-Rotor and Stator-Stator Interferences in Multi-Stage Turbomachines
Analysis of Rotor-Rotor and Stator-Stator Interferences in Multi-Stage Turbomachines
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DOI：
10.1115/1.1508382
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发表时间：
2002-10
影响因子：
1.7
通讯作者：
Li He;T. Chen;R. Wells;Y. S. Li;W. Ning
中科院分区：
文献类型：
--
作者：
Li He;T. Chen;R. Wells;Y. S. Li;W. Ning
采用非线性谐波方法分析了多级压气机中相邻级之间的相互作用。特别感兴趣的是周向“非周期”分布和叶片的相对周向定位（“时钟”）的影响。本方法的主要特点是，非周期和时钟效应都非常有效地包含在周向“稳定”谐波扰动中。因此，单通道域非线性调和求解器的一次运行可以产生整个环空非定常和非周期时均流场。此外，任何时钟位置的性能变化都可以简单地通过后处理结果获得。以两级半跨声速压气机为例进行了研究，结果表明转子-转子相互作用比定子-定子相互作用强得多。上游旋翼尾迹与下游旋翼通道激波之间的相互作用似乎是导致旋翼强干涉的机制。一项转子-转子时钟研究表明，与亚音速流动相比，跨声速流动中时钟位置的损失变化在质量上有所不同。ASME版权所有©2002
A nonlinear harmonic methodology is adopted to analyse interactions between adjacent stages in multi-stage compressors. Of particular interest are the effects of circumferential ‘aperiodic’ distributions and the relative circumferential positioning (‘clocking’) of blades. The main feature of the present approach is that both the aperiodic and clocking effects are very efficiently included with circumferential ‘steady’ harmonic disturbances. Consequently, a single run of the nonlinear harmonic solver using a single-passage domain can produce the whole annulus unsteady and aperiodic time-averaged flow field. In addition, performance variation at any clocking position can be obtained simply by post-processing the result. A case study is presented for a two and half stage transonic compressor, and the present results show much stronger rotor-rotor interaction than stator-stator interaction. A mechanism leading to strong rotor-rotor interference seems to be the interaction between upstream rotor wakes and the downstream rotor passage shock waves. A rotor-rotor clocking study illustrates a qualitatively different loss variation with respect to clocking position in a transonic flow compared to that in a subsonic flow.Copyright © 2002 by ASME