| 叶尖间隙流动对某微小型离心压气机性能的影响 |
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| 引用本文： | 殷明霞,冀国锋,桂幸民. 叶尖间隙流动对某微小型离心压气机性能的影响[J]. 航空动力学报, 2010, 25(3): 565-570 |
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| 作者姓名： | 殷明霞 冀国锋 桂幸民 |
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| 作者单位： | 北京航空航天大学能源与动力工程学院,北京,100191;北京航空航天大学能源与动力工程学院,北京,100191;北京航空航天大学能源与动力工程学院,北京,100191 |
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| 基金项目： | 50676004,50736007 |
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| 摘 要： | 为研究微小型离心压气机在不同叶尖间隙下的性能变化,对某高速跨声离心压气机进行了带间隙的三维黏性流场数值模拟,详细分析了在不同的间隙情况下压气机内部流场特征和性能变化趋势.结果表明,随着叶尖间隙增大,叶轮流道内泄漏流动的强度明显增强,导致叶轮的增压能力下降,效率降低,以至于压气机整级压比、效率和流量都有所下降,压气机的稳定裕度也受到了明显的影响.
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| 关 键 词： | 离心压气机 叶尖间隙流动 稳定裕度 数值模拟 |
| 收稿时间： | 2009-02-17 |
| 修稿时间： | 2009-05-04 |
Influence of tip clearance flow on performance of one micro centrifugal compressor |
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| YIN Ming-xi,JI Guo-feng and GUI Xing-min. Influence of tip clearance flow on performance of one micro centrifugal compressor[J]. Journal of Aerospace Power, 2010, 25(3): 565-570 |
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| Authors: | YIN Ming-xi JI Guo-feng GUI Xing-min |
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| Affiliation: | School of Jet Propulsion, Beijing University of Aeronautics and Astronautics, Beijing 100191, China |
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| Abstract: | In order to research the effects of different clearance width of small centrifugal compressor, a high speed centrifugal compressor was investigated by numerical simulation. The results show that the leakage flow was strengthened with the gap width increased, and deteriorated the flow condition of impeller. The stage pressure ratio, efficiency and surge margin decreased correspondingly. |
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| Keywords: | centrifugal compressor tip clearance flow stable margin numerical simulation |
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