液体流过有缺陷的层状膜:一种现象学描述

A. Quandt, A. Kyrylchuk, G. Seifert, David Tom'anek
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引用次数: 2

摘要

我们提出了一个现实的现象学描述液体运输通过缺陷,分层膜。我们在传统层流模型的基础上推导出一般表达式,并对其形式进行扩展以适应滑动流。我们考虑了不同类型的缺陷,包括提供通过膜的无激活弯曲路径的层内空位。在影响流动的诸多因素中,最重要的是层内空位缺陷半径,它在通量密度表达式中处于四次方。我们将我们的形式应用于水通过有缺陷的多层氧化石墨烯膜的运输,发现流动仍然处于层流状态。我们的研究结果表明,该体系中观察到的高渗透率可以定量地解释为层内孔隙的足够密度缩短了有效扩散路径。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Liquid Flow through Defective Layered Membranes: A Phenomenological Description
We present a realistic phenomenological description of liquid transport through defective, layered membranes. We derive general expressions based on conventional models of laminar flow and extend the formalism to accommodate slip flow. We consider different types of defects including in-layer vacancies that provide an activation-free tortuous path through the membrane. Of the many factors that affect flow, the most important is the radius of in-layer vacancy defects, which enters in the fourth power in expressions for the flux density. We apply our formalism to water transport through defective multilayer graphene oxide membranes and find that the flow remains in the laminar regime. Our results show that observed high water permeability in this system can be explained quantitatively by a sufficient density of in-layer pores that shorten the effective diffusion path.
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