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