粒子成像测速——非介入式全场技术

Abstract

粒子成像测速(PIV)作为一种新的流场测试技术,不同于传统的热线、探针、雷达等测速方法,是能够在不扰乱流场的情况下(非介入),迅速地捕捉到整个流场速度信息的测量技术。它的出现为复杂流场的研究提供了更直接有效的方法。本文介绍了粒子成像测速方法的工作原理,核心技术,讨论了PIV技术的发展趋势。

As an new technique for fluid flow measurement,Particle Image Velocimetry (PIV),which different from the conventional way to measure the flow velocity (pressure probes,hot wires,laser Doppler velocimety),allows for capturing velocity information of whole flow fields in fractions of a second without disturbs the flow.It brings a more efficient way to study the complex flow field.This paper introduced the principle,core technology of PIV,discussed the further development of this new technique.