| 离心压气机无叶扩压段流路控制扩稳机理 |
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| 引用本文： | 王永生,童志庭,林峰,聂超群.离心压气机无叶扩压段流路控制扩稳机理[J].航空动力学报,2012,27(9):2106-2112. |
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| 作者姓名： | 王永生 童志庭 林峰 聂超群 |
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| 作者单位： | 1. 中国科学院工程热物理研究所先进能源动力重点实验室,北京100190 中国科学院研究生院,北京100190
2. 中国科学院工程热物理研究所先进能源动力重点实验室,北京,100190 |
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| 基金项目： | 国家重点基础研究发展计划(2007CB210104); 国家自然科学基金(51010007) |
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| 摘 要： | 为寻求叶轮-扩压器间无叶扩压段流路控制的扩稳机理，选取某离心压气机为研究对象，利用数值模拟的方法，通过流场分析解释其失速机理，并在此基础上重新设计无叶扩压段机匣结构，探讨一种有效流路控制扩稳方式，分析结果表明：将无叶扩压段机匣结构设计为先收缩后扩张型后，离心压气机稳定工作范围提高了2，8％，但绝热效率有所降低。
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| 关 键 词： | 无叶扩压段 机匣结构 流路控制 扩稳 离心压气机 |
| 收稿时间： | 2011/10/14 0:00:00 |
Stall improvement mechanism of vaneless diffuser flow path control in a centrifugal compressor |
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| WANG Yong-sheng,TONG Zhi-ting,LIN Feng and NIE Chao-qun.Stall improvement mechanism of vaneless diffuser flow path control in a centrifugal compressor[J].Journal of Aerospace Power,2012,27(9):2106-2112. |
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| Authors: | WANG Yong-sheng TONG Zhi-ting LIN Feng and NIE Chao-qun |
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| Institution: | Key Laboratory of Advanced Energy and Power Chinese Academy of Sciences, Institute of Engineering Thermophysics, Chinese Academy of Sciences, Beijing 100190, China;Graduate University of Chinese Academy of Sciences, Beijing 100190, China;Key Laboratory of Advanced Energy and Power Chinese Academy of Sciences, Institute of Engineering Thermophysics, Chinese Academy of Sciences, Beijing 100190, China;Key Laboratory of Advanced Energy and Power Chinese Academy of Sciences, Institute of Engineering Thermophysics, Chinese Academy of Sciences, Beijing 100190, China;Key Laboratory of Advanced Energy and Power Chinese Academy of Sciences, Institute of Engineering Thermophysics, Chinese Academy of Sciences, Beijing 100190, China |
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| Abstract: | To investigate the stall improvement mechanism of vaneless diffuser flow path control,a centrifugal compressor was simulated and compared with existing experimental data.According to characteristics of flow field and stall mechanism,a convergent-divergent type of impeller-diffuser casing designed was analyzed.The result shows that the stable flow range of centrifugal compressor increases by 2.8%,however,no obvious positive effects are found on the adiabatic efficiency which is slightly lower than that of the prototype. |
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| Keywords: | vaneless diffuser casing structure flow path control stall improvement centrifugal compressor |
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