Volume 34 Issue 9
Sep.  2019
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Numerical simulation on seal-rotor system with airflow induced vibration[J]. Journal of Aerospace Power, 2019, 34(9): 1857-1865. doi: 10.13224/j.cnki.jasp.2019.09.001
Citation: Numerical simulation on seal-rotor system with airflow induced vibration[J]. Journal of Aerospace Power, 2019, 34(9): 1857-1865. doi: 10.13224/j.cnki.jasp.2019.09.001

Numerical simulation on seal-rotor system with airflow induced vibration

doi: 10.13224/j.cnki.jasp.2019.09.001
  • Received Date: 2019-03-28
  • Publish Date: 2019-09-28
  • For the diagnosis of airflow induced vibration fault in the seal, the dynamic model of seal-rotor system was established based on finite element method and Muzynska seal fluid force model. The airflow induced vibration instability law and dynamic characteristics from run-up and run-down processes were studied by numerical simulation method. And the different eccentricities' effects during the case of variable speed and steady speed were also analyzed. The result showed that natural frequency of rotor system was increased by the airflow excitation force, and the amplitude was reduced in resonance zone. The frequency locking phenomenon and combination frequency characteristics appeared by airflow vibration with the speed increase. The phenomenon of hysteresis under run-down conditions was not obvious because of the strong gas flow. Only frequency locking occurred when the eccentricity was small, the combined frequency was observed and enriched with eccentricity increase. The airflow vibration frequency was enhanced and changed suddenly by increasing eccentricity in the process of constant rotating speed.

     

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  • [1]
    何洪军,荆建平.非线性转子-密封系统动力学模型研究[J].振动与冲击,2014,33(10):73-76.HE Hongjun,JING Jianping.Dynamic model of a nonlinear rotor-seal system[J].Journal of Vibration and Shock,2014,33(10):73-76.(in Chinese)
    [2]
    罗跃纲,王鹏飞,徐昊,等.迷宫密封-转子系统研究进展与展望[J].大连民族大学学报,2019,21(1):6-14.LUO Yuegang,WANG Pengfei,XU Hao,et al.Review and prospect on the research of the labyrinth seal-rotor system[J].Journal of Dalian Minzu University,2019,21(1):6-14.(in Chinese)
    [3]
    YAN Xin,HE Kun,LI Jun,et al.Numerical techniques for computing nonlinear dynamic characteristic of rotor-seal system[J].Journal of Mechanical Science and Technology,2014,28(5):1727-1740.
    [4]
    KIRK R G,GUO Z.Influence of leak path friction on labyrinth seal inlet swirl[J].Tribology Society of Tribologists and Lubrication Engineers,2009,52(2):139-145.
    [5]
    HIRANO T,GUO Z,KIRK R G.Application of computational fluid dynamics analysis for rotating machinery:Part Ⅱ labyrinth seal analysis[J].Transactions,2005,127(4):820-826.
    [6]
    CANGIOLI F,CHATTERTON S,PENNACCHI P,et al.Thermo-elasto bulk-flow model for labyrinth seals in steam turbines[J].Tribology International,2018,119(2):359-371.
    [7]
    SUBRAMANIAN S,SEKHAR A S,PRASAD B V S S S.Rotordynamic characteristics of rotating labyrinth gas turbine seal with centrifugal growth[J].Tribology International,2016,97(2):349-359.
    [8]
    孙丹,王双,艾延廷,等.负错位密封静力和动力特性的数值研究[J].航空动力学报,2017,32(4):791-799.SUN Dan,WANG Shuang,AI Yanting,et al.Numerical study on static and dynamic characteristics[J].Journal of Aerospace Power,2017,32(4):791-799.(in Chinese)
    [9]
    刘兴旺,张官正,李超,等.涡旋压缩机径向迷宫密封中泄漏气体气动热力学行为研究[J].机械工程学报,2015,51(20):201-207.LIU Xingwang,ZHANG Guanzheng,LI Chao,et al.Research on gas leakage pneumatic thermodynamic behavior in the radial labyrinth of scroll compressor[J].Journal of Mechanical Engineering,2015,51(20):201-207.(in Chinese)
    [10]
    WANG Weizhe,LIU Yingzheng,JIANG Puning.Numerical investigation on influence of real gas properties on nonlinear behavior of labyrinth seal-rotor system[J].Applied Mathematics and Computation,2015,263:12-24.
    [11]
    MA Wensheng,HUANG Hai,FENG Guoquan,et al.Labyrinth seals diameter and length effect study on nonlinear dynamics[J].Procedia Engineering,2015,99(4):1358-1364.
    [12]
    MA Hui,LI Hui,NIU Heqiang,et al.Nonlinear dynamic analysis of a rotor-bearing-seal system under two loading conditions[J].Journal of Sound & Vibration,2013,332(23):6128-6154.
    [13]
    ZHANG Enjie,JIAO Yinghou,CHEN Zhaobo.Dynamic behavior analysis of a rotor system based on a nonlinear labyrinth-seal forces model[J].Journal of Computational and Nonlinear Dynamics,2018,13(10):101002.1-101002.12.
    [14]
    罗跃纲,吴斌,智洪文,等.基于改进碰摩力模型的迷宫密封-滑动轴承-转子系统动态特性[J].大连民族大学学报,2016,18(1):33-37.LUO Yuegang,WU Bin,ZHI Hongwen,et al.Dynamics behaviours of labyrinth seal-sliding bearing-rotor system based on improved rub-impact force model[J].Journal of Dalian Minzu University,2016,18(1):33-37.(in Chinese)
    [15]
    马辉,闻邦椿,太兴宇,等.旋转叶片-机匣系统碰摩动力学[M].北京:科学出版社,2017.
    [16]
    BENTLY D E,MUSZYNSKA A.Role of circumferential flow in the stability of fluid-handling machine rotors[R].Minden,NV:5th Workshop on Rotor Dynamic Instability Problems in High Performance Turbo Machinery,1988.
    [17]
    LUO Yuegang,ZHANG Songhe,WU Bin,et al.Dynamic analysis on nonlinear fluid-structure interaction forces of rub-impact rotor system[J].Open Mechanical Engineering Journal,2014,8(1):480-486.
    [18]
    魏统胜,郝点,于海明,等.迷宫密封气流激振效应对转子振动响应影响的实验研究[J].石油大学学报(自然科学版),2000,24(3):70-72.WEI Tongsheng,HAO Dian,YU Haiming,et al.Experimental investigation on rotor-dynamic characteristics stimulated by airflow in labyrinth seals[J].Journal of the University of Petroleum,2000,24(3):70-72.(in Chinese)
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