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Visualization and measurements of flows in micro silicon Y-channels

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Abstract

Velocities and accelerations are measured and visualized in silicon microchannels using particle tracking velocimetry (PTV). Both pulsatile and stationary flows are generated in channels with different geometry. Distinct differences between flow regimes and geometries are shown. Flow separation occurred at Re = 84 for the channel with an expanded bifurcation shown by streamlines from long exposed images. Moving least squares are used to find the ensemble-averaged positions of the measured velocities from tracking. This is needed to find the local and convective accelerations.

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Authors and Affiliations

  1. Hydrodynamics laboratory, Department of Mathematics, University of Oslo, 0851, Oslo, Norway

    Jostein Kolaas & Atle Jensen

  2. SINTEF ICT, Microsystems and Nanotechnology (MiNaLab), 0373, Oslo, Norway

    Michal Mielnik

Authors
  1. Jostein Kolaas
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  2. Atle Jensen
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  3. Michal Mielnik
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Kolaas, J., Jensen, A. & Mielnik, M. Visualization and measurements of flows in micro silicon Y-channels. Eur. Phys. J. E 36, 19 (2013). https://doi.org/10.1140/epje/i2013-13019-x

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  • DOI: https://doi.org/10.1140/epje/i2013-13019-x

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