Lateral migration and focusing of microspheres in a microchannel flow of viscoelastic fluids
SCIE
SCOPUS
- Title
- Lateral migration and focusing of microspheres in a microchannel flow of viscoelastic fluids
- Authors
- Seo, KW; Kang, YJ; Lee, SJ
- Date Issued
- 2014-06
- Publisher
- AMER INST PHYSICS
- Abstract
- The lateral migration of microspheres across streamlines induced by elasticity and inertia in a square microchannel flow of viscoelastic fluids is investigated using a holographic microscopy technique. We experimentally demonstrate the exact particle positions driven by the elasticity of fluid in the channel cross-section. The effects of the blockage ratio, flow rate, and shear-thinning property of the viscoelastic fluids on particle migration are evaluated. In particular, the focusing patterns of microspheres in three-dimensional volume are analyzed under different conditions, namely, dominant inertia, dominant elasticity, and the combined effects of inertia and elasticity. (C) 2014 AIP Publishing LLC.
- Keywords
- MICROSCALE PIPE-FLOW; INERTIAL MIGRATION; POISEUILLE FLOW; SPHERICAL-PARTICLES; RIGID SPHERES; ENTRY FLOW; SHEAR-FLOW; SIMULATIONS; GEOMETRIES; MOTION
- URI
- https://oasis.postech.ac.kr/handle/2014.oak/12560
- DOI
- 10.1063/1.4882265
- ISSN
- 1070-6631
- Article Type
- Article
- Citation
- PHYSICS OF FLUIDS, vol. 26, no. 6, 2014-06
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