A PIV system for two-phase flow with nanoparticles

作者：Xu, Xuefeng; Luo, Jianbin^*; Yan, Jing

来源：International Journal of Surface Science and Engineering, 2008, 2(1-2): 168-175.

DOI：10.1504/IJSURFSE.2008.018975

• two-phase flow with nanoparticles
• fluorescent core-shell nanoparticle
• PIV

The two-phase flow with nanoparticles (the solid-liquid two-phase flow in which solid particles are from 1 nm to 100 nm) has been widely used in industries. A fundamental understanding of dynamics of nanoparticles in the flow is important and critical. In this study, a Particle Image Velocimetry (PIV) system has been developed to measure the movement of nanoparticles in the flow. The system utilises fluorescent core-shell SiO2 nanoparticles with a diameter around 55 nm as tracing particles. The error analysis of the system shows that the Brownian motion of particles plays a significant role in the accuracy of velocity measurements. By using the system, the velocity profile of nanoparticles in a channel flow is obtained and analysed.

• 出版日期2008
• 单位清华大学