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Nordic Pulp & Paper Research Journal

The international research journal on sustainable utilization of forest bioresources

Editor-in-Chief: Lindström, Tom

IMPACT FACTOR 2018: 0.929
5-year IMPACT FACTOR: 1.255

CiteScore 2018: 0.92

SCImago Journal Rank (SJR) 2018: 0.386
Source Normalized Impact per Paper (SNIP) 2018: 0.585

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Volume 27, Issue 2


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

Hanna Wiklund / Tetsu Uesaka
Published Online: 2018-11-09 | DOI: https://doi.org/10.3183/npprj-2012-27-02-p403-408


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.

Keywords: Micro-fluidics; Edge-wicking; Porous structure; Lattice Boltzmann

About the article

Published Online: 2018-11-09

Published in Print: 2012-05-01

Citation Information: Nordic Pulp & Paper Research Journal, Volume 27, Issue 2, Pages 403–408, ISSN (Online) 2000-0669, ISSN (Print) 0283-2631, DOI: https://doi.org/10.3183/npprj-2012-27-02-p403-408.

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