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。
In order to study the effect of different calculation methods for flutter research, using the 628 transon- ic condition of Standard Test Configuration 4-STCF4, with four flutter calculation methods （ energy method, influ- ence coefficient method and standing mode method and individual blade mode method） to conduct a comprehensive calculation with analysis and comparison, the reference for choosing appropriate flutter calculation method was pro- vided. The reason why afterward travelling wave is more unstable than forward travelling wave in turbine cascade was expounded , 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.
出处
《科学技术与工程》
北大核心
2015年第23期213-218,共6页
Science Technology and Engineering
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
energy method
influence coefficient method
standing mode method
individual blade mode method
aeroelasticity
flutter
travelling wave
inter-blade phase angle （IBPA）
