期刊文献+

间隙和转速对轴流压气机非定常叶顶泄漏流周向传播特性影响的实验研究 被引量:2

Experimental Study of Effects of Tip Clearance and Shaft Speed on Circumferential Propagation Characteristics of Unsteady Tip Leakage Flow
原文传递
导出
摘要 针对一台低速单转子轴流压气机,对不同间隙和转速下非定常叶顶泄漏流诱导的压力波的周向传播特性进行了实验研究。通过机匣壁面上沿叶片弦向和周向分布的动态压力传感器,测量压气机转子叶顶区域流场的压力信号;借助功率谱密度、滤波、空间傅里叶变换等方法,分析了非定常波动的频率特性、传播速度和周向模态数的变化。结果表明,小间隙时叶顶泄漏流波动强度减弱;转速不变时减小间隙或间隙不变时提高转速,都将使得相同流量系数时叶顶泄漏流的波动频率增大。对各间隙和转速组合,随压气机节流,传播速度增大,周向模态数减少.转速不变时减小间隙,将使得相同流量系数时的传播速度和模态数增大;对同一间隙的相同流量系数,转速改变对模态数和传播速度无明显影响。 The circumferential propagation characteristics of pressure wave induced by unsteady tip leakage flow(TLF) in a low-speed isolated axial compressor rotor have been experimentally studied with different tip clearances and shaft speeds.The pressure signal at the tip region of the rotor was collected with dynamic pressure sensors aligned in circum-direction and chord-direction on the casing.And the changes of frequency,propagation speed and mode orders of the pressure wave were analyzed by methods such as Power Spectrum Density(PSD),filter,Spatial Fourier Transform(SFT) and so on.The results show that the unsteadiness of TLF is restrained when the tip clearance reduces.The reduction of tip clearance ata certain shaft speed and the improvement of shaft speed with a certain tip clearance will improve the frequency of the unsteadiness of TLF.As the compressor throttling,the speed of the rotating wave will increase and the mode orders will decrease withdifferent clearances and at different shaft speeds Decreasing clearance at a certain shaft speed will improve the propagation speed and mode orders of TLF unsteadiness at the same flow coefficient,but shaft speed has little effect on mode ordersand propagation speed when clearance and flow coefficient don’t change.
出处 《工程热物理学报》 EI CAS CSCD 北大核心 2016年第7期1404-1410,共7页 Journal of Engineering Thermophysics
基金 国家自学基金(No.50906080 No.51306178)
关键词 轴流压气机 叶顶泄漏流非定常性 周向传播 间隙 转速 实验研究 axial compressor unsteadiness of TLF circumferential propagation tip clearance shaft speed experimental study
  • 相关文献

参考文献4

二级参考文献75

  • 1孙晓峰 周盛.气动声学[M].北京:国防工业出版社,1994..
  • 2TAKATA H, NAGANO S. Nonlinear analysis of rotating stall[J]. Journal of Engineering for Power, 1972, 94(4): 279-293.
  • 3DAY I J, GREITZER E M, CUMPSTY N A. Prediction of compressor performance in rotating stall[J]. Journal of Turbomachinery, 1978, 100(1): 1-14.
  • 4GARNIER V H, EPSTEIN A H, GREITZER E M. Rotating waves as a stall inception indication in axial compressors[J]. Journal of Turbomachinery, 1991, 113(2): 290-302.
  • 5INOUE M, KUROUMARU M, IWAMOTO T, et al. Detection of a rotating stall precursor in isolated axial flow compressor rotors[J]. Journal of Turbomachinery, 1991, 113(2): 281-289.
  • 6TAHARA N, KUROSAKI M, OHTA Y, et al. Early stall warning techniques for axial-flow compressors[J]. Journal of Turbomachinery, 2007, 129(3): 448-456.
  • 7GENG Shaojuan, ZHANG Hongwu, CHEN Jingyi, et al. Numerical study on the response of tip leakage flow unsteadiness to micro tip injection in a low-speed isolated compressor rotor[C/CD]//American Society of Mecha- nical Engineers, Turbine Technical Conference & Exposition, May 14-17, 2007, Palais des Congres, Montreal, Canada, ASME GT2007-27729.
  • 8HOYING D A, TAN C S, VO H D, et al. Role of blade passage flow structures in axial compressor rotating stall inception[J]. Journal of Turbomachinery, 1999, 121 (4): 735-742.
  • 9VO H D, TAN C S, GREITZER E M. Criteria for spike initiated rotating stall[J]. Journal of Turbomaehinery,2008, 130(1): 011023.
  • 10HAH C, BERGNER J, SCHIFFER H Z. Short length-scale rotating stall inception in a transonic axial compressor-criteria and mechanism[C/CD]// American Society of Mechanical Engineers, Turbine Technical Conference & Exposition, May 8-11, 2006, Ccib, Barcelona, Spain, ASME GT2006-90045.

共引文献25

同被引文献52

引证文献2

二级引证文献2

相关作者

内容加载中请稍等...

相关机构

内容加载中请稍等...

相关主题

内容加载中请稍等...

浏览历史

内容加载中请稍等...
;
使用帮助 返回顶部