| 低速轴流压气机中工况变化对动叶顶部泄漏流波动频率的影响 |
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| 引用本文： | 邓向阳,张宏武,黄伟光.低速轴流压气机中工况变化对动叶顶部泄漏流波动频率的影响[J].工程热物理学报,2005,26(6):938-940. |
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| 作者姓名： | 邓向阳 张宏武 黄伟光 |
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| 作者单位： | 中国科学院工程热物理研究所,北京,100080;中国科学院研究生院,北京,100080;中国科学院工程热物理研究所,北京,100080 |
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| 摘 要： | 本文利用数值方法研究了某两级低速轴流压气机第二级动叶在存在前后静叶扰动时,工况变化对其顶部非定常泄漏流波动频率的影响。结果显示其波动主要集中在泄漏涡轨迹附近,并且随着流量减小而增强。在大流量工况,其波动频率为转子通道频率。在中等流量工况,其波动频率为0.59倍通道频率。在小流量工况,其波动频率为0.51倍通道频率。并且其波动频率与前后静叶扰动强度无关。
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| 关 键 词： | 轴流压气机 频率 顶部泄漏流 工况 非定常 |
| 文章编号： | 0253-231X(2005)06-0938-03 |
| 修稿时间： | 2004年11月25 |
EFFECTS OF OPERATING CONDITION ON THE FREQUENCY CHARACTERISTIC OF ROTOR TIP LEAKAGE FLOW IN AN LOW-SPEED AXIAL COMPRESSOR |
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| DENG Xiang-Yang,ZHANG Hong-Wu,HUANG Wei-Guang.EFFECTS OF OPERATING CONDITION ON THE FREQUENCY CHARACTERISTIC OF ROTOR TIP LEAKAGE FLOW IN AN LOW-SPEED AXIAL COMPRESSOR[J].Journal of Engineering Thermophysics,2005,26(6):938-940. |
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| Authors: | DENG Xiang-Yang ZHANG Hong-Wu HUANG Wei-Guang |
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| Abstract: | Numerical methods were utilized to investigate the effects of operating condition variations on the frequency characteristics of unsteady rotor tip clearance flow with upstream and downstream stators in a low-speed two-stage axial compressor. The result shows that the unsteady fluctuation is primarily around the tip leakage vortex trajectory , and the fluctuating amplitude increases with the decrease of mass flow in the compressor. The frequency of the tip leakage flow is 1.0, 0.59 and 0.51 times the rotor blade passing frequency respectively for the large, middle and small mass flow operating conditions. Moreover the frequency is independent of the upstream and downstream stator disturbance intensities. |
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| Keywords: | axial compressor frequency tip leakage flow operating condition unsteady |
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