Influence of up- and downstream blade rows on aeroelastic stability of compressor rotor blade
-
摘要: 使用自行开发的流固耦合程序集,分别考虑压气机上下游叶排的影响对转子叶片气动弹性稳定性进行分析.使用全环气动弹性模型通过叶片在非定常流场中振幅随时间的变化历程计算转子叶片不同振型下的气动阻尼,分析了不同的叶排轴向间距下尾迹和势干扰对气动阻尼的影响规律.通过将考虑转静干涉效应的气动阻尼与单转子的结果作比较,总结了转子-静子结构和导叶-转子结构的干涉作用对转子叶片颤振特性的影响规律.结果表明:对于1阶弯曲模态,转子叶片气动弹性稳定性不随轴向间距单调变化;上游尾迹干涉作用和下游静子势干扰的增强会加剧1阶扭转模态失稳,但是却促进1阶弯扭耦合模态气动弹性稳定.Abstract: Aeroelastic stability analysis of compressor rotor blades, including up- and downstream blade rows interaction, was conducted by self-developed fluid-structure coupled simulation programs. Blade aerodynamic damping values under different vibration modes were calculated through the time trace of the blade vibration amplitude induced by the unsteady flow field, using a whole assembly aeroelastic model. And the influence of wakes and potential waves on the aerodynamic damping values was studied for different axial gaps. Interaction effects on the flutter characteristics of rotor-stator and inlet guide vane-rotor configurations were assessed by comparing the damping data with that of the single rotor. The results show that the aeroelastic stability is not changed monotonically with the axial gap value for the first bending modal. The results also illustrate that the intensified wake and potential wave effects could destabilize the first torsional modal, but stabilize the first bending-torsion coupled modal.
-
[1] Whitehead D S.Bending flutter of unstalled cascade blades at finite deflection[R].Aeronautical Research Council Report and Memoranda No.3386,1956. [2] Sadeghi M,Yang S,Liu F,et al.Parallel computation of wing flutter with a coupled Navier-Stokes/CSD method[R].AIAA-2003-1347,2003. [3] 金琰,袁新.三维透平叶片扭转颤振问题的流固耦合数值研究[J].工程热物理学报,2004,25(1):41-44. JIN Yan,YUAN Xin.Numerical analysis of 3D turbine blade's torsional flutter by fluid-structure coupling method[J].Journal of Engineering Thermophysics,2004,25(1):41-44.(in Chinese) [4] Srivastava R,Keith T G.Influence of shock wave on turbomachinery blade row flutter[J].Journal of Propulsion and Power,2005,21(1):167-174. [5] Culver R,Liu F. Mixing-plane method for flutter computation in multi-stage turbomachines[R].AIAA-2009-862,2009. [6] Huang X Q,He L,Bell D L.Influence of upstream stator on rotor flutter stability in a low pressure steam turbine stage[J].Journal of Power and Energy,2006,220(1):25-35. [7] Li H D,He L.Blade aerodynamic damping variation with rotor-stator gap:a computational study using single-passage approach[J].Journal of Turbomachinery,2005,127(3):573-579. [8] 张陈安,叶正寅,刘锋,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. ZHANG Chen'an,YE Zhengyin,LIU Feng,et al.Investigations on flutter characteristics of rotor blade with IGV/fan interactions[J].Journal of Propulsion Technology,2010,31(3):335-339.(in Chinese) [9] Carta F O.Coupled blade-disc-shroud flutter instabilities in turbojet engine rotors[J].Journal of Engineering for Power,1967,89(3):419-426. [10] Kamakoti R,Shyy W.Fluid-structure interaction for aeroelastic applications[J].Progress in Aerospace Sciences,2004,40(8):535-558. [11] 郑赟.基于非结构网格的气动弹性数值方法研究[J].航空动力学报,2009,24(9):2069-2077. ZHENG Yun.Computational aeroelasticity with an unstructured grid method[J].Journal of Aerospace Power,2009,24(9):2069-2077.(in Chinese) [12] ZHENG Yun,YANG Hui.Coupled fluid-structure flutter analysis of a transonic fan[J].Chinese Journal of Aeronautics,2011,24(3):258-264. [13] Denton J D.The calculation of three-dimensional viscous flow through multistage turbomachines[J].Journal of Turbomachinery,1992,114(1):18-26. [14] Giles M B.Stator/rotor interaction in a transonic turbine[J]. Journal of Propulsion and Power,1990,6(5):621-627. [15] Giles M.Non-reflecting boundary conditions for the Euler equations[J].AIAA Journal,1990,28(5):2050-2058. [16] Berestycki H,Nirenberg L.On the method of moving planes and the sliding method[J].Bulletin/Brazilian Mathematical Society,1991,22(1):1-37. [17] Hassan O,Probert E J,Morgan K,et al.Unsteady flow simulation using unstructured meshes[J].Computer Methods in Applied Mechanics and Engineering,2000,189(4):1247-1275. [18] 郑赟,田晓,杨慧.跨声速风扇叶片变形对气动性能的影响[J].航空动力学报,2011,26(7):1621-1627. ZHENG Yun,TIAN Xiao,YANG Hui.Impact of blade deflection on aerodynamic performance of a transonic fan[J].Journal of Aerospace Power,2011,26(7):1621-1627.(in Chinese) [19] 郑赟,杨慧.跨音速风扇全环叶片颤振特性的流固耦合分析[J].北京航空航天大学学报,2013,39(5):626-630. ZHENG Yun,YANG Hui.Full assembly fluid/structured flutter analysis of a transonic fan[J].Journal of Beijing University of Aeronautics and Astronautics,2013,39(5):626-630.(in Chinese)
点击查看大图
计量
- 文章访问数: 861
- HTML浏览量: 3
- PDF量: 592
- 被引次数: 0