摘要
显微PIV系统可用于流体微观层次以及微流体流动的测量,可获得流体速度的场信息以及其中颗粒的场信息。本文主要介绍显微PIV系统所涉及的显微图像获取技术以及图像处理算法。该系统由硬件与相应软件系统组成。其中,硬件主要包括放大倍数为1000倍的光学显微镜以及最大拍摄速度为10000帧/秒的高速摄像系统;IMPACT软件为自行开发的基于C++系统的面向对象程序,其中内嵌多种数据处理与分析算法。通过对尺寸为1μm颗粒运动的测量,对不同数据处理算法进行了检验,结果表明:建立的显微PIV系统可有效获得微观流体流动的图像并可准确进行数据的处理,该系统完全可用于微观流体流动的测量。
Micro-PIV system can be used in the measurement of micro-scale flows and micro flows. The flow velocity and particle information will be obtained via this system. This paper developed a Micro-PIV system and its process software. The hardware part is composed of microscope with 1000x magnification and high-speed camera with 10000 frame/s. IMPACT software developed by ourselves is an Object Oriented program, which includes some advanced processing algorithms for the PIV technique. This paper measured motion of particle of 1μm diameter and validated the algorithms used in the software. It can be seen that Micro-PIV system developed in the paper can efficiently acquire the image of moving particles and process them, it can be used to the measurement of micro flow completely.
出处
《流体力学实验与测量》
CSCD
北大核心
2003年第4期84-88,共5页
Experiments and Measurements in Fluid Mechanics
基金
国家重点基础研究发展规划项目(2002CB2116)
