| 喷气对低速轴流压气机转子叶顶区域流动的影响 |
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| 引用本文： | 耿少娟,张宏武,朱俊强,黄伟光.喷气对低速轴流压气机转子叶顶区域流动的影响[J].工程热物理学报,2007,28(3):395-398. |
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| 作者姓名： | 耿少娟 张宏武 朱俊强 黄伟光 |
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| 作者单位： | 1. 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,北京,100039
2. 中国科学院工程热物理研究所,北京,100080 |
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| 摘 要： | 本文采用数值模拟方法研究了近失速工况动叶顶部前缘附近喷气对低速轴流压气机孤立转子叶顶区域流动的影响.受喷射气流的影响,叶顶泄漏流进行自发非定常波动的动态平衡被破坏,建立起新的周期性非定常波动;喷气不仅改变了叶顶泄漏流的起始触发位置,还影响到其形成后的形态和运行轨迹;且喷气后叶顶附近区域损失减小.
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| 关 键 词： | 叶顶泄漏流 非定常流动 轴流压气机 喷气 |
| 文章编号： | 0253-231X(2007)03-0395-04 |
| 修稿时间： | 2006年11月27 |
EFFECTS OF MICRO AIR INJECTION ON ROTOR TIP FLOW IN A LOW-SPEED ISOLATED AXIAL COMPRESSOR ROTOR |
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| GENG Shao-Juan,ZHANG Hong-Wu,ZHU Jun-Qiang,HUANG Wei-Guang.EFFECTS OF MICRO AIR INJECTION ON ROTOR TIP FLOW IN A LOW-SPEED ISOLATED AXIAL COMPRESSOR ROTOR[J].Journal of Engineering Thermophysics,2007,28(3):395-398. |
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| Authors: | GENG Shao-Juan ZHANG Hong-Wu ZHU Jun-Qiang HUANG Wei-Guang |
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| Abstract: | Numerical method is utilized to investigate the effects of discrete micro air injection from casing shroud upstream blade tip leading edge on the rotor tip flow in a low-speed isolated axial compressor rotor at the operating condition near stall point.Under the influence of injected flow, the dynamic balance that drives the self-induced unsteady tip leakage flow is destroyed and a new forced-induced periodic fluctuation of tip leakage flow establishes.Not only the initiation position but also the trajectory of tip leakage flow is influenced by the air injection.Also the relative total pressure loss is reduced with air injection. |
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| Keywords: | tip leakage flow unsteady flow axial compressor air injection |
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