| 关于叶栅气动弹性稳定性的四种数值计算方法对比研究 |
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| 引用本文： | 谭理. 关于叶栅气动弹性稳定性的四种数值计算方法对比研究[J]. 科学技术与工程, 2015, 15(23) |
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| 作者姓名： | 谭理 |
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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 航空发动机数值仿真研究中心 |
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| 摘 要： | 为了研究不同计算方法对颤振计算的影响,采用标准低压涡轮叶栅颤振模型——STCF4(standard test configuration 4)算例4中的628跨音速工况,分别用四种颤振计算方法(能量法、影响系数法、驻波模态法和单叶片模态法)进行全面计算和分析,为工程实践选取合适的颤振计算方法提供参考。阐述了涡轮叶栅中后行波比前行波更不稳定的原因,展现了叶片间相位角的形成过程,从而揭示了叶片间相位角对结构气动弹性稳定性具有关键性作用的原因。
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| 关 键 词： | 能量法 影响系数法 驻波法 单叶片模态法 气动弹性 颤振 行波 叶片间相位角 |
| 收稿时间： | 2015-04-14 |
| 修稿时间： | 2015-04-14 |
Comparative Study on cascade aeroelastic stabilitywith four numerical calculation methods |
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| TAN Li. Comparative Study on cascade aeroelastic stabilitywith four numerical calculation methods[J]. Science Technology and Engineering, 2015, 15(23) |
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| Authors: | TAN Li |
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| Abstract: | In order to study the effect of different calculation methods for flutter research, using the 628 transonic condition of Standard Test Configuration 4 - STCF4, with four flutter calculation methods (energy method, influence coefficient method and standing mode method and individual blade mode method) to conduct a comprehensive calculation with analysis and comparison, to provide the reference for choosing appropriate flutter calculation method. This paper expounds the reason why afterward travelling wave is more unstable than forward travelling wave in turbine cascade, showed the formation of inter-blade phase angle, thus re-veals the reason why inter-blade phase angle plays a key role in the aeroelastic stability analysis problem. |
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| Keywords: | energy method influence coefficient method standing mode method individual blade mode method aeroelasticity flutter travelling wave inter-blade phase angle (IBPA) |
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