中国电机工程学报2012，Vol.32Issue(26)：118-125,8.
多级压气机动叶片时序效应数值研究
Numerical Study of Influence of Rotor Blades' CLOCKING Effect on Aerodynamic Performance of a Multistage Compressor
颜培刚 1姚宏伟 1韩万金1
作者信息
- 1. 哈尔滨工业大学能源科学与工程学院,黑龙江省 哈尔滨市150001
- 折叠
摘要
Abstract
The unsteady flow fields of a three-stage axial compressor were simulated, and the CLOCKING effect of the second rotor blades (R2) on the aerodynamic loading of the second stator vane S2 was mainly studied. The 3D N-S equations was solved by using frequency domain transformed method based on Harmonic function. The aerodynamic force and torque of each blade rows were studied by time and frequency domain analysis. The results show that the flow excited forces of the second rotor blade R2 and S2 would be significantly changed when R2 at different CLOCKING positions. When at CLKO position(all rotor row at the same circumferential position), the aerodynamic force direction of S2 is opposite to conventional in some moments. The fluctuation of aerodynamic force and torque also reach the maximum. When at CLK2 position(the second rotor blade located at the circumferential position after rotating half pitch), the aerodynamic force stability of R2 and S2 are both improved. The aerodynamic force direction of S2 is always positive and its fluctuation is obviously smaller than those at other CLOCKING positions. The fluctuation of aerodynamic torque and times of variation in directions are also lower than others. Furthermore, the response of the first-order blade passing frequency (BPF) on the rotor blades upstream and downstream reaches the minimum.关键词
压气机/非定常模拟/时序效应/气流激振力/气动负荷/叶片Key words
compressor/ unsteady simulation/ CLOCKING effect/ flow excited force/ aerodynamic loading/blade分类
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颜培刚,姚宏伟,韩万金..多级压气机动叶片时序效应数值研究[J].中国电机工程学报,2012,32(26):118-125,8.
