Viscoelastic fluid flow in circular narrow confinements driven by periodic pressure and potential gradients

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    Abstract

    We present an in-depth analysis and analytical solution for AC hydrodynamic flow (driven by a timedependent pressure gradient and/or electric fields) of viscoelastic fluid through cylindrical micro-, nanochannels. Particularly, for this purpose we solve the linearized Poisson-Boltzmann equation together with the incompressible Cauchy’s momentum equation under no-slip boundary conditions. The resulting solutions allow us to predict the electrical current and solution flow rate. The results satisfy the Onsager reciprocal relation. The validity of these Onsager relations is important since it enables an analogy between fluidic networks in this flow configuration and electric circuits. They especially are of interest in micro- and nanofluidic energy conversion applications [1]. We furthermore found that AC electrical actuation leads to a stronger flow enhancement than AC pressure actuation. The findings advance our understanding of AC electrokinetic phenomena of viscoelastic fluids and provide insight in flow characteristics as well as can assist the design of devices for lab-on-chip applications.
    Original languageUndefined
    Title of host publicationThe 19th International Conference on Miniaturized Systems for Chemistry and Life Sciences (uTAS 2015)
    PublisherChemical and Biological Micro Systems Society
    Pages1104-1106
    Number of pages1
    ISBN (Print)978-0-9798064-8-3
    Publication statusPublished - 25 Oct 2015
    Event19th International Conference on Miniaturized Systems for Chemistry and Life Sciences 2015 - Hwabaek International Convention Center (HICO), Gyeongju, Korea, Republic of
    Duration: 25 Oct 201529 Oct 2015
    Conference number: 19
    http://www.rsc.org/images/LOC/2015/PDFs/Copyrite.pdf

    Publication series

    NameProceedings International Conference on Miniaturized Systems for Chemistry and Life Sciences, μTAS
    PublisherChemical and Biological Microsystems Society
    ISSN (Print)1556-5904

    Conference

    Conference19th International Conference on Miniaturized Systems for Chemistry and Life Sciences 2015
    Abbreviated titleMicroTas 2015
    CountryKorea, Republic of
    CityGyeongju
    Period25/10/1529/10/15
    Internet address

    Keywords

    • EWI-26548
    • METIS-315085
    • IR-98725

    Cite this

    Nguyen, T., van den Berg, A., & Eijkel, J. C. T. (2015). Viscoelastic fluid flow in circular narrow confinements driven by periodic pressure and potential gradients. In The 19th International Conference on Miniaturized Systems for Chemistry and Life Sciences (uTAS 2015) (pp. 1104-1106). (Proceedings International Conference on Miniaturized Systems for Chemistry and Life Sciences, μTAS). Chemical and Biological Micro Systems Society.