Tracking microparticle motions in three-dimensional flow around a microcubic array fabricated on the wall surface

Tracking microparticle motions in three-dimensional flow around a microcubic array fabricated on... This paper describes the application of a microscopic defocusing image system to track 3D particle motions in microflow around a microcubic array near a microchannel wall surface. The measurement principle and calibration method were evaluated to provide accurate 3D microparticle location. Particle trajectories were measured in two microchannels. Measured velocity profiles of Hele–Shaw flows for two Reynolds numbers agreed well with theoretical profiles. Three-dimensional particle tracking in fluid flow around a microcubic array exhibited quasi-periodic and non-periodic trajectory modes. The experimental results indicated that 3D particle motions are spatially and time dependent even when the flow rate is constant, and microparticle trajectories may deviate from steady flow streamlines. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Microfluids and Nanofluids Springer Journals

Tracking microparticle motions in three-dimensional flow around a microcubic array fabricated on the wall surface

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Publisher
Springer Journals
Copyright
Copyright © 2018 by The Author(s)
Subject
Engineering; Engineering Fluid Dynamics; Biomedical Engineering; Analytical Chemistry; Nanotechnology and Microengineering
ISSN
1613-4982
eISSN
1613-4990
D.O.I.
10.1007/s10404-018-2047-3
Publisher site
See Article on Publisher Site

Abstract

This paper describes the application of a microscopic defocusing image system to track 3D particle motions in microflow around a microcubic array near a microchannel wall surface. The measurement principle and calibration method were evaluated to provide accurate 3D microparticle location. Particle trajectories were measured in two microchannels. Measured velocity profiles of Hele–Shaw flows for two Reynolds numbers agreed well with theoretical profiles. Three-dimensional particle tracking in fluid flow around a microcubic array exhibited quasi-periodic and non-periodic trajectory modes. The experimental results indicated that 3D particle motions are spatially and time dependent even when the flow rate is constant, and microparticle trajectories may deviate from steady flow streamlines.

Journal

Microfluids and NanofluidsSpringer Journals

Published: Feb 24, 2018

References

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