三维PIV原理及其实现方法

Principle and technology of three-dimensional PIV

粒子图像测量技术(PIV)在现代流场测量中发挥了重要作用,是流场测速研究的发展方向之一。随着二维PIV日益完善,新课题对流场测速技术提出更高的要求,推动了三维PIV的深入研究,但该技术的复杂性使得流场的三维速度测量更为困难。笔者以PIV技术为对象,重点阐述基于针孔相机模型的三维PIV原理和实现方法,并探讨了三维PIV研究工作的若干进展。

PIV （Particle Image Velocimetry） plays an important tendencies in modem flow field research and becomes one of the tendencies in flow velocity survey. With the performance of two-dimensional PIV increasingly perfected, three-dimensional PIV is further impelled by higher demands of the new tasks, but it is more complicated and more difficult to come true. On basis of PIV technique, the principle and realization of three-dimensional PIV based on pinhde camera model are mainly introduced and the advances of three-dimensional PIV are discussed at the end of this paper.