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arXiv 1010.4152cond-mat.mes-hallphysics.flu-dyn
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纳米尺度上流体动力学的分子模拟

Molecular simulation of fluid dynamics on the nanoscale

Jadran Vrabec, Elmar Baumhögger, Andreas Elsner, Martin Horsch, Zheng Liu, Svetlana Miroshnichenko, Azer Nazdrajić, Thorsten Windmann

摘要:

分子动力学模拟应用于液体甲烷在平面石墨通道中的Poillille流动,覆盖3和135 nm之间的通道直径。在这个长度尺度上,过渡被发现之间的政权,其中局部有序诱导的壁占主导地位的整个系统和较大的通道直径的边界滑移的影响仍然存在,但在更有限的程度。达西定律对于压力驱动的多孔介质渗流的有效性不受这些区域之间的过渡的影响。

英文摘要:

Molecular dynamics simulation is applied to Poiseuille flow of liquid methane in planar graphite channels, covering channel diameters between 3 and 135 nm. On this length scale, a transition is found between the regime where local ordering induced by the wall dominates the entire system and larger channel diameters where the influence of boundary slip is still present, but of a more limited extent. The validity of Darcy's law for pressure-driven flow through porous media is not affected by the transition between these regimes.

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