• CN：11-2187/TH
  • ISSN：0577-6686
机械工程学报

›› 1988, Vol. 24 ›› Issue (1): 8-14.

• 论文 • 上一篇    下一篇

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激光测速技术在叶轮机械内的应用

梁锡智   

  1. 中国科学院工程热物理研究所
  • 发布日期:1988-01-01

APPLICATIONS OF LASER MEASUREMENTAL TECHNIQUES IN TURBOMACHINERY

Liang Xizhi   

  1. Institute of Engineering Thermophysics Chinese Academy of Sciences
  • Published:1988-01-01

摘要： 为了进一步提高叶轮机械的性能，发展可靠的设计方法并验证数值解的精确性，需要深入了解流过叶片通道包括边界层内的复杂三元流动现象，特别是转子叶片通道内的流动。非接触式激光测速技术，可在转子高速旋转下，测量叶片通道内的速度和湍流度的数据。因而在过去十多年来有两种激光测速仪成功地被应用到叶轮机械的测量中。本文对这两种激光技术、激光多普勒测速仪（LDA）和激光双焦距测速仪（L2VF）进行了系统的分析和比较，给出了每种系统的特性参数和一些典型的应用例子，给出了它们的优缺点和使用范围。

关键词: 激光测速仪, 激光技术, 激光应用, 叶轮机械

Abstract: The research and development of turbomachines requires the understanding of the complex three dimensional flow through blade passages including the boundary layers. The non-intrusive laser anemometry provide the necessary information concerning the velocity and turbulence components even within rotors operating at. High rotational speed. This paper mainly reviews systems of laser anemometry having been applied successfully to turbomachinery over last ten years. Laser-Dopplar anemometry (LDA) and laser-two-focus velocimeter (L2FY).The characteristic parameters of each system and typical examples are shown. Finally, some conclusions are drawn considering the advantages and disadvantages of LDA and L2FY for this special application.

Key words: 激光测速仪, 激光技术, 激光应用, 叶轮机械

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