PIV技术及其在两相流测量中的应用

PIV Technique and Its Application in Two-phase Flow Measurement

作为一种瞬时全场速度测量方法,PIV测试技术已被广泛应用于液体或气体的单相流流场测定。对于两相流PⅣ技术,目前还处于起步与发展阶段。文章介绍了PIV技术的基本原理,并对其在气-固、气-液及液-固两相流领域中的研究应用状况做了总结与分析,同时指出了PIV技术的应用前景和未来发展方向。

Particle image velocimetry(PIV) is widely used in single-phase liquid flow as well as in gas flow as a method of instantaneous and whole-field velocity measurement,but the two-phase PIV measurement technique is still in the initial development stage at present.Firstly,the basic principle of PIV is introduced;secondly,the study and application of PIV is summarized and analyzed in the field of gas-solid,gas-liquid and liquid-solid two-phase flow;Finally,the application prospects and the trends of development of PIV are put forward.