Molecular Dynamics Simulation of Valveless Pumping in a Closed Nanofluidic Tube System: A Study of the Local Streaming Velocity

Jesper S. Hansen, Johnny T. Ottesen

Publikation: Bidrag til tidsskriftTidsskriftartikelForskningpeer review

Resumé

In this paper we perform a realistic nonequilibrium molecular dynamics simulation of valveless pumping in a closed nanofluidic tube system. It is shown that the simple pumping mechanism can generate a uni-directional mean flow on very small length and times scales, thereby overcoming the technical difficulties often encountered when manufacturing more complex pumping devices. From the molecular dynamics simulation we obtain the spatio temporal dynamics of the pressure. The molecular dynamics results are substituted into the Navier-Stokes equation and we are then able to extract the local streaming velocity profiles sufficiently far away from the pumping device. The mean streaming velocity is compared with molecular dynamics data showing excellent agreement. Detailed knowledge about these profiles will be valuable for future investigation of this remarkable system.

OriginalsprogEngelsk
TidsskriftJournal of Computational and Theoretical Nanoscience
Vol/bind6
Udgave nummer3
Sider (fra-til)593-598
Antal sider6
ISSN1546-1955
DOI
StatusUdgivet - 2009

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    abstract = "In this paper we perform a realistic nonequilibrium molecular dynamics simulation of valveless pumping in a closed nanofluidic tube system. It is shown that the simple pumping mechanism can generate a uni-directional mean flow on very small length and times scales, thereby overcoming the technical difficulties often encountered when manufacturing more complex pumping devices. From the molecular dynamics simulation we obtain the spatio temporal dynamics of the pressure. The molecular dynamics results are substituted into the Navier-Stokes equation and we are then able to extract the local streaming velocity profiles sufficiently far away from the pumping device. The mean streaming velocity is compared with molecular dynamics data showing excellent agreement. Detailed knowledge about these profiles will be valuable for future investigation of this remarkable system.",
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    author = "Hansen, {Jesper S.} and Ottesen, {Johnny T.}",
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    Molecular Dynamics Simulation of Valveless Pumping in a Closed Nanofluidic Tube System : A Study of the Local Streaming Velocity. / Hansen, Jesper S.; Ottesen, Johnny T.

    I: Journal of Computational and Theoretical Nanoscience, Bind 6, Nr. 3, 2009, s. 593-598.

    Publikation: Bidrag til tidsskriftTidsskriftartikelForskningpeer review

    TY - JOUR

    T1 - Molecular Dynamics Simulation of Valveless Pumping in a Closed Nanofluidic Tube System

    T2 - A Study of the Local Streaming Velocity

    AU - Hansen, Jesper S.

    AU - Ottesen, Johnny T.

    PY - 2009

    Y1 - 2009

    N2 - In this paper we perform a realistic nonequilibrium molecular dynamics simulation of valveless pumping in a closed nanofluidic tube system. It is shown that the simple pumping mechanism can generate a uni-directional mean flow on very small length and times scales, thereby overcoming the technical difficulties often encountered when manufacturing more complex pumping devices. From the molecular dynamics simulation we obtain the spatio temporal dynamics of the pressure. The molecular dynamics results are substituted into the Navier-Stokes equation and we are then able to extract the local streaming velocity profiles sufficiently far away from the pumping device. The mean streaming velocity is compared with molecular dynamics data showing excellent agreement. Detailed knowledge about these profiles will be valuable for future investigation of this remarkable system.

    AB - In this paper we perform a realistic nonequilibrium molecular dynamics simulation of valveless pumping in a closed nanofluidic tube system. It is shown that the simple pumping mechanism can generate a uni-directional mean flow on very small length and times scales, thereby overcoming the technical difficulties often encountered when manufacturing more complex pumping devices. From the molecular dynamics simulation we obtain the spatio temporal dynamics of the pressure. The molecular dynamics results are substituted into the Navier-Stokes equation and we are then able to extract the local streaming velocity profiles sufficiently far away from the pumping device. The mean streaming velocity is compared with molecular dynamics data showing excellent agreement. Detailed knowledge about these profiles will be valuable for future investigation of this remarkable system.

    KW - Valveless Pumping

    KW - Nanofluids

    KW - Molecular Dynamics

    KW - Streaming Velocity

    U2 - 10.1166/jctn.2009.1077

    DO - 10.1166/jctn.2009.1077

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    JO - Journal of Computational and Theoretical Nanoscience

    JF - Journal of Computational and Theoretical Nanoscience

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