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Water transport through (7,7) carbon nanotubes of different lengths using molecular dynamics

Nicholls, William and Borg, Matthew Karl and Lockerby, Duncan A. and Reese, Jason (2012) Water transport through (7,7) carbon nanotubes of different lengths using molecular dynamics. Microfluidics and Nanofluidics, 12 (1-4). pp. 257-264. ISSN 1613-4982

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    Abstract

    Non-equilibrium molecular dynamics simulations are used to investigate water transport through (7,7) CNTs, examining how changing the CNT length affects the internal flow dynamics. Pressure-driven water flow through CNT lengths ranging from 2.5 to 50 nm is simulated. We show that under the same applied pressure difference an increase in CNT length has a negligible effect on the resulting mass flow rate and fluid flow velocity. Flow enhancements over hydrodynamic expectations are directly proportional to the CNT length. Axial profiles of fluid properties demonstrate that entrance and exit effects are significant in the transport of water along CNTs. Large viscous losses in these entrance/exit regions lead into central “developed” regions in longer CNTs where the flow is effectively frictionless.

    Item type: Article
    ID code: 36707
    Keywords: carbon nanotubes , molecular dynamics, microfluidic , Mechanical engineering and machinery, Solid state physics. Nanoscience, Mechanical Engineering, Mechanics of Materials, Water Science and Technology
    Subjects: Technology > Mechanical engineering and machinery
    Science > Physics > Solid state physics. Nanoscience
    Department: Faculty of Engineering > Mechanical and Aerospace Engineering
    Technology and Innovation Centre > Advanced Engineering and Manufacturing
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      Depositing user: Pure Administrator
      Date Deposited: 13 Jan 2012 12:41
      Last modified: 02 May 2014 14:54
      URI: http://strathprints.strath.ac.uk/id/eprint/36707

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