用高速摄影技术研究液膜从透平静叶出口边的撕裂

TUDIES ON TEARING OF THE LIQUID FILM FROM THE EXIT-EDGE OF A STEAM TURBINE STATIONARY BLADE BY USING HIGH-SPEED PHOTOGRAPHY TECHNIQUE

用高速摄影技术研究了液膜从透平静叶出口边的撕裂现象；设计了实际可靠的实验装置；得到了一系列关于高速气流速度ｖ∞和液膜流量Ｑ对液膜撕裂长度ｌ和临界韦伯数Ｗｅｃｒ影响的结果。

Tearing of the liquid film from the exit-edge of a steam turbine stationary blade is studied by us-ing high-speed photography technique. A practical and reliable test rig is designed.A series of experi-mental results concerned with the effects of the high-speed flow velocity V∞ and the liquid-film flowrate Q on the liquid-film tearing length l and critical Webb number Wecr,are obtained.