基于Micro-PIV的微观流场检测技术

›› 2005, Vol. 41 ›› Issue (9): 106-111.

基于Micro-PIV的微观流场检测技术

谢海波;傅新;杨华勇

浙江大学流体传动及控制国家重点实验室

发布日期:2005-09-15

MICRO-PIV BASED MIRO FLOW VISUALIZATION TECHNOLOGY

Xie Haibo;Fu Xin;Yang Huayong

State Key Laboratory of Fluid Power Transmission and Control, Zhejiang University

Published:2005-09-15

摘要/Abstract

摘要： 介绍了一种针对微观流场检测数字粒子图像测速技术，通过添加荧光显微装置，改进激光入射与照明方式、聚焦平面控制以及纳米级示踪粒子布朗运动误差消除算法等软硬件方面的技术创新，解决了微观检测的关键问题。针对微流体特征尺度小、精度要求高的特点，建立了具有自主知识产权的Micro－PIV微流场测试平台，并就几种典型微观流场进行了检测。试验结果表明该测试技术可对微米级稳态、瞬变流场进行全流场速度分布的检测，各项性能指标达到国际先进水平。

关键词: Micro－PIV, 布朗运动, 示踪粒子, 微流控系统

Abstract: A new particle image velocimetry technology for microfluidic device made by micro system technology is presented. The Micro-PIV system is setup by adding an epi-fluorescence microscope and improving the light source and choosing the special type of tracing particle. According to micron dimension flow scale and high precision request, an image processing based on cross correlation algorithm is discussed. Aim at eliminating the main error caused by Brown motion of tracing particle, a method by averaging velocities of ensemble particles in the same interrogation plot is also advanced. Three classic flow fields are detected by Micro-PIV system. The results show that this device is fit for steady and transient flow with micron dimension scales.

Key words: Brown motion, Micro fluidic system, Micro-PIV, Tracing particle

中图分类号:

TH137 TH39

谢海波;傅新;杨华勇. 基于Micro-PIV的微观流场检测技术[J]. , 2005, 41(9): 106-111.

Xie Haibo;Fu Xin;Yang Huayong. MICRO-PIV BASED MIRO FLOW VISUALIZATION TECHNOLOGY[J]. , 2005, 41(9): 106-111.

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