PIV应用于气液两相流的研究现状

Research advances of PIV in gas-liquid phase flow

作为一种全新的无扰、瞬态、全场速度测量技术,粒子图像测速(PIV)技术近年来在单相流和多相流领域得到了广泛的应用。对于气液两相流PIV技术,目前还处于起步与发展阶段。着重概述了两相示踪粒子的采样技术,并对近年来国外PIV技术在气液两相流动领域中的研究现状做了总结与分析,指出PIV技术在气液两相流体特性研究中具有很好的应用前景。

Particle image velocimetry （PIV） is widely used in single-phase flow as well as in muhiphase flow as an accurate high-quality, non-invasive and instantaneous measurement technique of full-field. But the gas-liquid two-phase PIV measurement technique is still in its developing stage. Sampling technique of two-phase trace particle is described. Especially, the research advances of PIV in gas-liquid two-phase flow in recent years are summarized. In the meantime, the expansive prospect about PIV in the research of flow characteristic of gas-liquid two-phase flow is pointed out.