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
View additional information: View in Web of Science™

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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