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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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.
|Keywords:||carbon nanotubes , molecular dynamics, microfluidic , Mechanical engineering and machinery, Solid state physics. Nanoscience|
|Subjects:||Technology > Mechanical engineering and machinery|
Science > Physics > Solid state physics. Nanoscience
|Department:||Faculty of Engineering > Mechanical and Aerospace Engineering|
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|Depositing user:||Pure Administrator|
|Date Deposited:||13 Jan 2012 12:41|
|Last modified:||15 Dec 2013 09:43|
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