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LDV和PIV测速技术测量离心压气机内部流动的应用进展

尉星航 马宏伟 廖鑫

尉星航,马宏伟,廖 鑫. LDV和PIV测速技术测量离心压气机内部流动的应用进展[J]. 实验流体力学,2021,35(5):1-18 doi: 10.11729/syltlx20200106
引用本文: 尉星航,马宏伟,廖 鑫. LDV和PIV测速技术测量离心压气机内部流动的应用进展[J]. 实验流体力学,2021,35(5):1-18 doi: 10.11729/syltlx20200106
YU X H,MA H W,LIAO X. Application progress of LDV and PIV in measuring flow in centrifugal compressor[J]. Journal of Experiments in Fluid Mechanics, 2021,35(5):1-18. doi: 10.11729/syltlx20200106
Citation: YU X H,MA H W,LIAO X. Application progress of LDV and PIV in measuring flow in centrifugal compressor[J]. Journal of Experiments in Fluid Mechanics, 2021,35(5):1-18. doi: 10.11729/syltlx20200106

LDV和PIV测速技术测量离心压气机内部流动的应用进展

doi: 10.11729/syltlx20200106
基金项目: 国家自然科学基金(51776011);国家科技重大专项(2017-V-0016-0068);国防科技重点实验室基金(6142702)
详细信息
    作者简介:

    尉星航:(1994-),男,陕西西安人,硕士研究生。研究方向:离心压气机流场测量及气动热力学计算。通信地址:北京市昌平区北京航空航天大学能源与动力工程学院航空发动机气动热力国防科技重点实验室(100191)。E-mail:yu_xinghang@163.com

    通讯作者:

    E-mail:mhw@buaa.edu.cn

  • 中图分类号: V235.1

Application progress of LDV and PIV in measuring flow in centrifugal compressor

  • 摘要: 离心压气机流场的精细测量对深入理解内部流动特征极其重要。传统的接触式流场测量技术存在空间分辨率低、堵塞效应严重、测量位置单一等缺陷,已经不能满足现代先进离心压气机的测量需求。激光多普勒测速技术(Laser Doppler Velocimeter,LDV)和粒子图像测速技术(Particle Image Velocimeter,PIV)作为两种典型的非接触式测量技术,具有测量精度高、适用范围广、非接触测量等特点,在离心压气机内部流场测量方面展现出巨大潜力。通过梳理国内外LDV和PIV测速技术测量离心压气机内部流动应用现状,介绍了LDV和PIV测速技术在离心压气机内流场测试方面的应用进展,着眼于试验方案、试验细节和技术难点,结合测量技术的未来发展趋势,从实际应用角度出发,对LDV和PIV测速技术在离心压气机内流场测量方面的应用进行了总结和展望。
  • 图  1  离心压气机结构示意图及气流参数沿流程变化

    Figure  1.  Structure diagram of centrifugal compressor and variation of flow parameters along flow path

    图  2  LDV测速技术光路结构[36]

    Figure  2.  Optical configurations of Laser Doppler Velocimeter[36]

    图  3  LDV测量截面分布[41]

    Figure  3.  Arrangement of the LDV measurement planes[41]

    图  4  LDV测量截面分布[42]

    Figure  4.  Arrangement of the LDV measurement planes[42]

    图  5  低速离心压气机(LSCC)子午流道LDV测量位置示意图[45]

    Figure  5.  Meridional view of low-speed centrifugal compressor (LSCC) rotor showing laser anemometer measurement locations[45]

    图  6  光学窗口分布[46]

    Figure  6.  Arrangement of the optical window[46]

    图  7  LDV布置方式及测量区域[47]

    Figure  7.  Optical setup of the LDA system and measurement area [47]

    图  8  叶轮出口径向速度和切向速度[47]

    Figure  8.  Radial velocity and tangential velocity at impeller outlet[47]

    图  9  50%叶高处的径向速度和切向速度[47]

    Figure  9.  Measured contours of the radial and tangential velocities at midspan for the base line clearance ratio[47]

    图  10  光学窗口位置[49]

    Figure  10.  The diffuser access window of the test stage[49]

    图  11  关键测量位置[50]

    Figure  11.  Key measurement locations[50]

    图  12  85%叶高处的轴向瞬时速度分布[49]

    Figure  12.  Instantaneous axial velocity contours at 85% span[49]

    图  13  径向测量截面上轴向湍流强度分布[38]

    Figure  13.  Distribution of axial turbulence intensity on radial measure-ment section [38]

    图  14  PIV测速技术基本原理[36]

    Figure  14.  Schematic diagram of Particle Image Velocimeter[36]

    图  15  离心压气机子午流道示意[57]

    Figure  15.  Schematic cross section of centrifugal compressor facility[57]

    图  16  叶片扩压器和叶轮示意图[57]

    Figure  16.  Schematic drawing of vaned diffuser and impeller showing the optical viewing port and light sheet probe insertion locations [57]

    图  17  内窥探头的剖面图,显示透镜、反射镜和出射窗[57]

    Figure  17.  Cutaway view of the light sheet periscope probe showing lenses, mirror and exit window[57]

    图  18  叶尖间隙内瞬态流场[57]

    Figure  18.  Tip clearance transient flow field[57]

    图  19  压气机和PIV系统子午剖面视图[61]

    Figure  19.  Meridional profile of the test compressor and PIV system[61]

    图  20  光片投影仪[61]

    Figure  20.  light sheet projector[61]

    图  21  离心压气机及PIV系统[62]

    Figure  21.  Compressor facility and PIV set up[62]

    图  22  PIV安装示意图[62]

    Figure  22.  Schematic of the compressor stage including the PIV setup[62]

    图  23  PIV测量区域及测量结果(z/b=50%)[65]

    Figure  23.  PIV measurement area and measurement results at z/b=50%[65]

    图  24  PIV在离心压气机试验台的布置方案[65]

    Figure  24.  Implementation of PIV at centrifugal compressor test rig[65]

    图  25  PIV测速系统示意图[66]

    Figure  25.  stereoscopic PIV configuration schematics[66]

    图  26  从稳定状态到失速状态(从左到右)64000 r/min (上)和88000 r/min(下)的流线和平均vxy速度分量[66]

    Figure  26.  Streamlines and AVG vxy vector components at 64000 r/min (top) and 88000 r/min (down) from stable regime to stall regime)[66]

    图  27  几种不同的进口测量方案[66, 69]

    Figure  27.  Several different import measurement schemes[66, 69]

    图  28  压气机进口管道及PIV测量方案[70]

    Figure  28.  Compressor inlet pipe and the PIV setup[70]

    图  29  轻度喘振平均速度分布[70]

    Figure  29.  Time-averaged velocity distributions at mild surge[70]

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出版历程
  • 收稿日期:  2020-09-04
  • 修回日期:  2021-03-01
  • 网络出版日期:  2021-11-15
  • 刊出日期:  2021-10-25

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