亚声速扩压平面叶栅尾迹动态压力场测量与分析
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摘要
为研究叶片在不同攻角下引起的气流分离对叶栅出口气流紊流度的影响,借助动态压力测量设备和测试技术,完成了某扩压平面叶栅在进口马赫数为0.677,攻角分别为0°、-10°和+8°三种典型工况下,尾迹非定常流动的测量。通过测量尾迹区域沿栅距方向和轴向的尾迹动态压力,并对动态压力数据进行时域分析,得到叶栅尾迹非定常流动的时均总压和压力脉动云图,揭示出尾迹区流动过程,同时还与叶栅的气动性能和气流稳定性进行了关联。
Using dynamic pressure measuring equipment and technology, dynamic pressure in the wake re-gion of plane compressor cascade under the incidence of 0°,-10°, + 8° with 0.677 inlet Mach number wasmeasured to study the impact of flow separation on cascade outlet flow turbulence. Pressure measured in thetangential direction and axial direction was processed in time-domain analysis. Dimensionless time averagetotal pressure and pressure fluctuation contour were obtained through the process. Flow structure in thewake region was revealed and related to aerodynamic characteristics and flow stability.
Using dynamic pressure measuring equipment and technology, dynamic pressure in the wake re-gion of plane compressor cascade under the incidence of 0°,-10°, + 8° with 0.677 inlet Mach number wasmeasured to study the impact of flow separation on cascade outlet flow turbulence. Pressure measured in thetangential direction and axial direction was processed in time-domain analysis. Dimensionless time averagetotal pressure and pressure fluctuation contour were obtained through the process. Flow structure in thewake region was revealed and related to aerodynamic characteristics and flow stability.
引文
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[2]侯安平,姜正礼,凌代军,等.亚音压气机平面叶栅内流动的声激励试验研究[J].北京航空航天大学学报,2005,31(11):56—59.
[3]刘艳明,关朝斌,孙拓,等.合成射流激励对压气机叶栅气动性能的影响[J].工程热物理学报,2011,32(5):750—754.
[4]程忠宇,吴学忠,李圣怡.基于MEMS的流动主动控制技术及其研究进展[J].力学进展,2011,35(4):577—584.
[5]Hilgenfeld L,Pfitzner M.Unsteady Boundary Layer Devel-opment due to Wake Passing Effects on a Highly LoadedLinear Compressor Cascade[R].ASME GT2004-53186,2004.
[6]张燎原,胡俊.轴流压气机叶片排流场非定常频谱特性试验技术[J].燃气涡轮试验与研究,2004,17(1):46—49.
[7]刘波,马昌友,王掩刚,等.转子叶尖间隙非定常压力场频谱分析[J].实验流体力学,2007,21(2):93—97.
[8]敖永平,单智超,何毅娜,等.高速轴流压气机叶尖流动特性试验[J].燃气涡轮试验与研究,2013,26(4):13—18.
[9]万钎君,石小江,李浩.某小型轴流压气机转子尖区流动测量[J].燃气涡轮试验与研究,2010,23(1):22—25.
[10]凌代军,姜正礼,仲永兴.平面叶栅非定常流动试验方法研究[J].燃气涡轮试验与研究,2006,19(3):24—36.
[11]姜正礼.平面叶栅尾迹测量数据的处理方法[J].燃气涡轮试验与研究,1993,6(2):38—44.