Browse > Article
http://dx.doi.org/10.3795/KSME-B.2004.28.9.1015

Analysis of Flow in a Microchannel Branch by Using Micro-PIV Method  

Yoon, Sang-Youl (부산대학교 대학원 기계공학과)
Kim, Kyung-Chun (부산대학교 기계공학부)
Publication Information
Transactions of the Korean Society of Mechanical Engineers B / v.28, no.9, 2004 , pp. 1015-1021 More about this Journal
Abstract
Micro-resolution Particle Image Velocimetry(Micro-PIV) was used to measure the flow in a micro-branch(Micro-Bypass). In this paper, effects of particle lump at the tip of a Micro-branch and difficulties of Micro-PIV measurements for microfluidics with branch passage were described. Micro-bypass was composed of a straight channel(200(100)${\mu}$m width ${\times}$ 80${\mu}$m height) and two branches which has 100(50)${\mu}$m width ${\times}$ 80${\mu}$m height. One of branches was straight and the other was curved. Experiments were performed at three regions along streamwise direction(entrance, middle and exit of branch) and five planes along vertical direction (0, ${\pm}$10, ${\pm}$20 ${\mu}$m) for the range of Re=0.24, 1.2, 2.4. Numerical simulation was done to compare with the measurements and understand the effects of particle lump at the tip of branch. And another fluid(3% poly vinyl Alcohol aqueous solution) were adapted for this study, so there were no particle sticking. In this case, we could get velocity difference between straight and curved branches.
Keywords
Microfludics; Micro-PIV; Micro-Branch; Flow Analysis;
Citations & Related Records
연도 인용수 순위
  • Reference
1 Out-of-Focus Effects on Particle Image Visibility and Correlation in Micoroscopic Particle Image Velocimetry /
[ Olsen, M. G.;Adrian, R. J. ] / Experiments in Fluids   DOI
2 Lee, D., Su, J. M. and Liang, H. Y., 2001, 'A Numerical Simulation of Steady Flow Fields in a Bypass Tube,' J. Biomechanics, Vol. 34, pp. 1407-1416   DOI   ScienceOn
3 Santiago, J. G., Were ley, S. T., Meinhart, C. D., Beebe, D. J. and Adrian, R. J., 1998, 'A Particle Image Velocimetry System for Microfluidics,' Experiments in Fluids, Vol. 25, No.4, pp. 316-319   DOI
4 Meinhart, C. D., Wereley, S. T. and Santiago, J. G., 1999, 'PIV Measurements of a Microchannel Flow,' Experiments in Fluids, Vol. 27, pp. 414-419   DOI
5 Sharp, K. V., 'Experimental Investigation of Liquid and Particle-Laden Flows in Microtubes,' Ph. D. Thesis in Univ. of Illinois
6 Olsen, M. G. and Adrian R. J., 2000, 'Out-of-Focus Effects on Particle Image Visibility and Correlation in Microscopic Particle Image Velocimetry,' Experiments ill Fluids, Vol. 2917, pp. 166-174   DOI