基于时域分析法的汽轮机末级叶片颤振预测及分析

摘要
图/表
参考文献(20)
相关文章 (15)

全文: PDF (2888 KB) HTML (1 KB)
输出: BibTeX | EndNote (RIS)

摘要利用基于流固耦合的时域分析法对某汽轮机末级叶片的颤振问题进行了数值模拟研究。通过对不同工况、不同相位角下叶片振动响应的计算，分析预测了颤振发生的临界流量以及叶片的振型；通过对叶片受力与位移的分析，获得了不同叶高处流体对叶片的做功，确定了叶片上气动不稳定区域。通过对气动不稳定区压力分布的分析，解释了叶片间相位角影响颤振发作的机理。此外，研究还发现叶片受力与位移之间的相位差是影响叶片气动稳定性的重要因素。

	服务

	把本文推荐给朋友
	加入我的书架
	加入引用管理器
	E-mail Alert
	RSS
	作者相关文章
	姜伟
	谢诞梅
	陈畅
	胡鹏飞
	高尚

关键词 ：时域分析法, 末级叶片, 颤振, 流固耦合, 气动稳定性

Abstract：A numerical study was performed on a steam turbine last-stage blade through the time domain analysis method based on fluid-structure interaction. The critical flow of flutter and the vibration mode of the blade were predicted by analyzing blade vibration responses under various operating conditions and interblade phase angles. Through the analysis of load and displacement of the blade, the work done by fluid on blade was obtained and the aerodynamic instability region was identified based on the work done by fluid on blade. The mechanism of effect of interblade phase angle on flutter was illustrated through the analysis of pressure distribution at aerodynamic instability region. The study also found that the phase difference between load and displacement of the blade is a key factor of aerodynamic stability.

Key words： time domain analysis method LSB flutter Fluid-Structure Interaction aerodynamic stability

收稿日期: 2014-02-12 出版日期: 2015-06-15

引用本文:

姜伟，谢诞梅，陈畅，胡鹏飞，高尚. 基于时域分析法的汽轮机末级叶片颤振预测及分析[J]. 振动与冲击, 2015, 34(11): 194-199.
JIANG Wei, XIE Danmei, Chen Chang, Hu Pengfei, Gao Shang. Flutter Prediction and Analysis of Steam Turbine LSB Based on Time Domain Analysis Method. JOURNAL OF VIBRATION AND SHOCK, 2015, 34(11): 194-199.

链接本文:

http://jvs.sjtu.edu.cn/CN/ 或 http://jvs.sjtu.edu.cn/CN/Y2015/V34/I11/194

[1]刘万琨.汽轮机末级叶片颤振设计[J].东方电气评论,2007,21(4):7-13.
Liu Wankun. Flutter design for steam turbine last blade[J]. Dongfang Electric Review,2007,21(4):7-13(in Chinese).
[2] 李宇峰,任大康,黄钢等.空冷汽轮机低压末级变工况设计[J].热力透平,2004,33(1):14-16.
Li YuFeng, Ren Dakang, Huang Gang, et al. The off-design for LP last stage blade of air-cooling units[J]. Thermal Turbine,2004,33(1):14-163(in Chinese).
[3]王家楹.改善汽轮机低压缸末级叶片调峰性能的探讨[J].浙江电力,2001,(4):57-58.
Wang Jiaying. Investigation on improving peak-load regulating performance of Final stage blade of steam turbine’s low pressure casing[J]. Zhejiang Electric Power,2001,(4):57-58(in Chinese).
[4]Whitehead D S. Vibration of cascade blades treated by actuator disc methods[J]. Proceedings of the Institution of Mechanical Engineers, 1959, 173(1): 555-574.
[5]杨晓东.预估叶片失速颤振的变形激盘法研究［D］.北京航空航天大学，1984.
Yang Xiaodong. The actuator disk method of predicting blade flutter[D]. Beijing University of Aeronautics and Astronautics, 1984(in Chinese).
[6]陈佐一，刘红，王继宏等. 汽轮机末级叶片失速颤振的全三维粘性流数值分析[J].中国电机工程学报,1999,(3):18-20,30.
Chen Zhuoyi, Liu Hong, Wang Jihong. Three dimensional viscous flow numerical analysis of stall flutter in steam turbine blades[J]. Proceedings of the CSEE,1999,(3):18-20,30(in Chinese).
[7]施永强.三维叶片颤振与叶片设计关联性究[D].西北工业大学,2006.
Shi Yongqiang. The relevance research of three dimensional blade flutter and blade design[D]. Northwestern Polytechnical University, 2006(in Chinese).
[8] 张兴国,刘锋,张陈安等.基于CFD技术的叶片颤振分析[J].航空计算技术,2009,39(4):75-78.
Zhang Xingguo, LiuFeng, Zhang Chenan. Flutter computation of turbomachinery blades based on CFD[J]. Aeronautical Computing Technique,2009,39(4):75-78(in Chinese).
[9]Bakhle, M.A., Reddy, T.S.R. and Keith, T.G.K., “Time Domain Flutter Analysis of cascades Using a Full Potential Solver,” AIAA Paper 90-0984, 1990.
[10]弓三伟,任丽芸,刘火星等.汽轮机末级转子叶片流固耦合计算[J].热力透平,2007,36(3):153-157,163.
Gong Sanwei, Ren Liyun, Liu Huoxing, et al. Fluid-Solid interaction of rotor blade in last stage of steam turbine[J]. Thermal Turbine,2007,36(3):153-157,163(in Chinese).
[11]王征,吴虎,史亚锋等.基于CFD/CSD技术的压气机叶片流固耦合及颤振分析[J].航空动力学报,2011,26(5):1077-1084.
Wang Zheng, Wu Hu, Shi Yafeng, et al. Fluid-structure interaction and flutter analysis of compressor blade based on CFD/CSD[J]. Journal of Aerospace Power, 2011,26(5):1077-1084(in Chinese).
[12]Massjung R. Discrete conservation and coupling strategies in nonlinear areoelasticity[J]. Computer Methods in Applied Mechanics and Engineering. 2006,196(1~3):91~102.
[13] Sun D, Owen J S, Wright N G, et al. Fluid–structure interaction of prismatic line-like structures, using LES and block-iterative coupling[J]. Journal of Wind Engineering and Industrial Aerodynamics, 2008, 96(6): 840-858.
[14]李磊,于明,李元生等.学科间信息传递的参数化空间散乱数据插值法[J].航空制造技术,2011,(9):77-81.
Li Lei, Yu Ming, Li YuanSheng, et al. Parameterized space scattered data interpolation method for inter- disciplinary information transferring[J]. Aeronautical Manufacturing Technology,2011,(9):77-81(in Chinese).
[15]Carta F O, Hilaire A O S. Experimentally determined stability parameters of a subsonic cascade oscillating near stall[J]. Journal of Engineering for Power, 1978,100:111-120.
[16] Carta F O. Unsteady aerodynamics and gapwise periodicity of oscillating cascaded airfoils[J]. Journal of engineering for power, 1983, 105(3): 565-574.
[17] Carta F O, Hilaire A O S. Effect of interblade phase angle and incidence angle on cascade pitching stability[J]. Journal of engineering for power, 1980, 102(2): 391-396.
[18]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 interblade phase angle on the flutter of rotor blades[J]. Journal of Areospace Power ,2010,25(2):412-416(in Chinese).
[19]杨炳渊,宋伟力.前缘激波脱体的大迎角翼面颤振工程计算方法[J].振动与冲击,2002,21(4):100-103.
Yan Bingyuan, Song Weili. Engineering approximation of high attack flutter for wing with bow wave on leading edge[J]. Journal of Vibration and Shock,2002,21(4):100-103(in Chinese).
[20]Thirstrup Petersen J, Aagaard Madsen H, Björck A, et al. Prediction of dynamic loads and induced vibrations in stall[M]. 1998.