Application of laser-velocity-measuring on diagnosis of structure of car's wake

摘要

This paper discusses the method of using the technique of laser-Doppler-Velocity-Meter to study the streamline of three-dimensional separating flow of car's wake and to measure the distribution of velocity. The experiment results show that itis effective, by combining the method of using laser to display flow regime with the technique fo digital picture, to reveal the structure of car's wake and to detemrine the resource of drag. This paper provides the foundation to establish the theoretical model of dynamics stimulation of three-dimensional separating flow of car.