APPLICATIONS OF MICRO-PIV TECHNIQUE IN VISUALIZATION OF FLOW IN MICROSPACE
A micro-resolution particle image velocimetry (micro-PIV) technique for flow visualization in microspace is presented here. The micro-PIV system was constructed through adding an epi-fluorescence microscope, improving the light source and choosing suitable tracing particle. According to smaller characteristic length of the flow in microscale and higher precision prolepsis, an image process technique based on cross correlation algorithm was conducted. To eliminate the main error caused by Brown motion of tracer particle, an approach by averaging the velocities of the ensemble particles in same interrogation plot was brought forward. Micro-PIV measure-ments of three typical flows (in a micromixer, near barriers and in a micro-jet) were carried out. The experimental results show that the micro-PIV system is suitable to bothsteady and unsteady flow in microscale. It is helpful to design micro-devices and analysis on data collected from such micro-devices.
Ruijin Wang Jianzhong Lin Yifeng Wang
State Key Lab. Of Fluid Power Trans. And Contr., Zhejiang University, Hangzhou,cn;School of Mechanic China Jiliang University, Hangzhou, cn School of Mechanical Engineering, Zhejiang University of Science and Technology,Hangzhou,cn
国际会议
海南三亚
英文
2007-01-10（万方平台首次上网日期，不代表论文的发表时间）