Particle migration and single-line particle focusing in microscale pipe flow of viscoelastic fluids
SCIE
SCOPUS
- Title
- Particle migration and single-line particle focusing in microscale pipe flow of viscoelastic fluids
- Authors
- Seo, KW; Byeon, HJ; Huh, HK; Lee, SJ
- Date Issued
- 2014-02
- Publisher
- ROYAL SOC CHEMISTRY
- Abstract
- The elasto-migration of microparticles across a streamline induced by elasticity and inertia in microscale pipe flow of viscoelastic fluids was investigated using a holographic technique. The effects of blockage ratio (d/D), flow rate (Q), and entry length (L) on particle migration induced by fluid elasticity were evaluated. Single-line particle focusing was demonstrated for an elasticity-dominant fluid. Furthermore, shear-thinning effect on particle migration was evaluated. Finally, we propose the focusing number, a non-dimensional parameter, to estimate the focusing state of particles in elasticity-dominant fluids. This criterion can be used to accurately estimate the design parameters, such as rheological properties, channel length, and particle diameter, for microfluidic devices using elasto-migration.
- Keywords
- CONTINUOUS SEPARATION; SPHERICAL-PARTICLES; INERTIAL MIGRATION; POISEUILLE FLOW; SHEAR-FLOW; DISTRIBUTIONS; MOTION
- URI
- https://oasis.postech.ac.kr/handle/2014.oak/12864
- DOI
- 10.1039/C3RA43522A
- ISSN
- 2046-2069
- Article Type
- Article
- Citation
- RSC ADVANCES, vol. 4, no. 7, page. 3512 - 3520, 2014-02
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