title: Intrusion of nonwetting liquid in paper.
abstract: The saturation curve of a sample of paper board was measured with mercury-intrusion porosimetry, and the three-dimensional structure of its pore space was determined by x-ray tomographic imaging. Ab initio numerical simulation of intrusion on the tomographic reconstruction, based on the lattice-Boltzmann method, was in excellent agreement with the measured saturation curve. A numerical invasion-percolation simulation in the same tomographic reconstruction showed good agreement with the lattice-Boltzmann simulation. The access function of the sample, determined from the saturation curve and the pore-throat distribution determined from the tomographic reconstruction, indicated that the ink-bottle effect is significant in paperlike materials.
authors.affiliation: Department of Physics, University of Jyväskylä, FI-40014 Jyväskylä, Finland.
authors.forename: J
authors.initials: J
authors.lastname: Hyväluoma
authors.forename: T
authors.initials: T
authors.lastname: Turpeinen
authors.forename: P
authors.initials: P
authors.lastname: Raiskinmäki
authors.forename: A
authors.initials: A
authors.lastname: Jäsberg
authors.forename: A
authors.initials: A
authors.lastname: Koponen
authors.forename: M
authors.initials: M
authors.lastname: Kataja
authors.forename: J
authors.initials: J
authors.lastname: Timonen
authors.forename: S
authors.initials: S
authors.lastname: Ramaswamy