抄録
A quantitative full-field velocity measurement system based on the digital image processing technique has been developed for analyzing high Reynolds fluid flow. The experimental system consists of a corded illumination source, a high speed image processing algorithm and a PC based image processing computer. Flow field visualized by fine tracer particles. By controlling synchronaization between the irradiation of a laser sheet and the NTSC video signal, descriptive information is obtained on consecutive TV images. Flow visualization images are generated using this optical technique which allows to track high-speed tracer particles. To confirm the ability and utility of this technique, the high Reynolds fluid flow (Re=1*10 4) inside a casting model has been investigated
