风扇转子叶片防颤改进设计

张耀光; 杨琳; 刘一雄

doi:10.13224/j.cnki.jasp.2020.06.020

风扇转子叶片防颤改进设计

doi: 10.13224/j.cnki.jasp.2020.06.020

计量
- 文章访问数: 601
- HTML浏览量: 168
- PDF量: 427
- 被引次数: 0
出版历程
- 收稿日期: 2019-12-19
- 刊出日期: 2020-06-28

Improved design for flutter free of fan rotor blade

Shenyang Engine Research Institute,Aero Engine Corporation of China,Shenyang 110015,China

摘要

摘要: 通过能量法对某两级跨声风扇试验件原型方案进行气弹稳定性预测,对气弹不稳定转子几何造型进行修改以提高气弹稳定性。通过对原型和改型方案的几何造型、气动性能和振动特性以及气弹稳定性对比分析表明:改型方案最小模态气动阻尼比由-146提升至183,消除了颤振风险,同时风扇气动性能保持不变且对原方案改动量较小。增加厚度、弦长使叶片相应径向位置的气弹稳定性增加,是改善颤振的有效手段,但是需要关注风扇气动性能变化。在相同槽道堵塞裕度降低量条件下,调整厚度分布提升气弹稳定性幅度最大。
- 风扇转子 /
- 颤振 /
- 能量法 /
- 气动性能 /
- 气弹稳定性
Abstract: Through aeroelastic stability prediction by energy method in original scheme of a two-stage transonic fan, the geometric modeling of aeroelastic unstable rotor was modified to improve the aeroelastic stability. Through comparative analysis of the geometric modeling, aerodynamic performance, vibration characteristic and aeroelastic stability of original and modified schemes, it showed that the minimum modal aerodynamic damping ratio of modified scheme increased from -146 to 183, eliminating the flutter risk, while the aerodynamic performance of the fan was kept unchanged and the modification to the original scheme was small. Increasing thickness and chord length can increase aeroelastic stability of blade at corresponding radial position, making it an effective means to improve flutter; however, attention should be paid to the change of aerodynamic performance. With the same reduction of channel blockage margin, adjustment of thickness distribution is the best way to improve aeroelastic stability.
- fan rotor /
- flutter /
- energy method /
- aerodynamic performance /
- ,aeroelastic stability

HTML

参考文献(18)

[1]	SISTIO F.A Review of the fluid mechanics of aeroelasticity in turbomechines［J］. Journal of Fluids Engineering,1977,99(1):40-44.
[2]	刘文阁,冯毓诚.对经验法预测叶片失速颤振的分析及叶片颤振数据库的建立［J］.北京航空学院学报,1986,12(4):113-122.
[3]	BENDIKSEN O O.Flutter of mistuned turbomachinery rotors［J］.Journal of Engineering for Gas Turbines and Power,1984,106(1):25-33.
[4]	XU J M,SONG Z H.Prediction of blade flutter in a tuned rotor［R］.ASME Paper 85-IGT-100,1985.
[5]	CARTA F O.Coupled blade-disk-shroud flutter instabilities in turbojet engine rotors［J］.Journal of Engineering for Power,1967,89(3):419-426.
[6]	BENDIKSEN O O.Aeroelastic problems in turbomachines［R］.AIAA-1990-1157,1990.
[7]	BENDIKSEN O O,FRIEDMANN P P.The effect of bending torsion coupling on fan and compressor blade flutter［J］.Journal of Engineering for Power,1982,104(3):617-623.
[8]	REDDY T S R,BAKHLE M A.Aeroelastic computations of a compressor stage using the harmonic balance method［R］.NASA/TM-2010-216240,2010.
[9]	李其汉,王延荣.航空发动机结构强度设计问题［M］.上海:上海交通大学出版社,2014:85-85.
[10]	HALL K C,LORENCE C B.Calculation of three-dimensional unsteady flows in turbomachinery using the linearized harmonic Euler equations［R］.ASME Paper 93-GT-92,1993.
[11]	HE L.Three-dimensional tine-marching inviscid and viscous solutions for unsteady flows around vibrating blades［R］.ASME Paper 93-GT-92,1993.
[12]	MOFFATT S,HE L.Blade forced response prediction for industrial gas turbines:Part Ⅰ methodologies［R］.ASME Paper GT 2003-38640,2003.
[13]	孙海,李坚,杨琳,等.压气机风扇叶片颤振预测和抑制的工程研究［J］.航空动力学报,2015,30(4):846-853. SUN Hai,LI Jian,YANG Lin,et al.Engineering research on prediction and suppression of blade flutter in compressor fan［J］.Journal of Aerospace Power,2015,30(4):846-853.(in Chinese)
[14]	杨琳,张耀光,刘一雄.风扇转子叶片防颤振设计技术［J］.航空动力学报,2017,32(7):1718-1727. YANG Lin,ZHANG Yaoguang,LIU Yixiong.Fan rotor blade flutter free design technology［J］.Journal of Aerospace Power,2017,32(7):1718-1727.(in Chinese)
[15]	张小伟,王延荣,徐可宁.叶轮机械叶片颤振的影响因素［J］.航空动力学报,2011,26(7):1557-1562. ZHANG Xiaowei,WANG Yanrong,XU Kening.Effects of parameters an blade flutter in turbomachinery［J］.Journal of Aerospace Power,2011,26(7):1557-1562.(in Chinese)
[16]	张小伟,王延荣,张潇,等.涡轮机械叶片的流固耦合数值计算方法［J］.航空动力学报,2009,24(7):1622-1626. ZHANG Xiaowei,WANG Yanrong,ZHANG Xiao,et al.Numerical method for fluid-structure interaction in turbomachinery bladings［J］.Journal of Aerospace Power,2009,24(7):1622-1626.(in Chinese)
[17]	张小伟,王延荣.叶间相位角对叶片颤振的影响［J］.航空动力学报,2010,25(2):412-416. ZHANG Xiaowei,WANG Yanrong.Influence of inter-blade phase angle on the flutter of rotor baldes［J］.Journal of Aerospace Power,2010,25(2):412-416.(in Chinese)
[18]	张陈安,叶正寅,刘峰,等.进口导流叶片对转子叶片颤振特性的影响［J］.推进技术,2010,31(3):335-339.