Journal article

Edge-wicking : Micro-fluidics of two-dimensional liquid penetrationinto porous structures

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Subtitle: Micro-fluidics of two-dimensional liquid penetrationinto porous structures

Author list: Uesaka, Tetsu;Wiklund, Hanna

Publication year: 2012

Start page: 403

End page: 408

Number of pages: 6

ISSN: 0283-2631

DOI: http://dx.doi.org/10.3183/NPPRJ-2012-27-02-p403-408

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Abstract

We have performed free-energy-based two-dimensional lattice Boltzmann simulations of the penetration of liquid into the edge of a porous material. The purpose was to gain further insight into possible mechanisms involved in the penetration of liquid into the unsealed edges of paper and paper board. In order to identify the fundamental mechanisms we have focused on a model structure that consists of a network of interconnected capillaries. Two different mechanisms were identified: pinning at corners of solid surfaces and increased pressure in dead-end pores. These mechanisms significantly decelerate or even stop the liquid penetration into the porous structures.


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