RESEARCH ON THE ALGORITHM OF BINARY IMAGE CROSS-CORRELATION FOR UNSTEADY FLOW FIELD MEASUREMENT

摘要

In the present paper,the algorithm of Binary Image Cross-Correlation(BICC)was developed to measure the unsteady flow field.A vortexflow field was used to test the algorithm by numerical simulation.The results showthat BICC is an effective algorithm for particle identification from consecutive im-ages, the accurate velocity vector field can be obtained.The real velocity field ina valve chamber was measured by BICC in this study.From the full-field velocityinformation,the pressure and vorticity fields were also extracted by post-processing.