Intrusion of nonwetting liquid in paper.
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.
Hyväluoma
J
J
Department of Physics, University of Jyväskylä, FI-40014 Jyväskylä, Finland.
Turpeinen
T
T
Raiskinmäki
P
P
Jäsberg
A
A
Koponen
A
A
Kataja
M
M
Timonen
J
J
Ramaswamy
S
S