Radial imbibition in paper under temperature differences

HIGUERA, F. J.; GOMBA, J. M.; LOPEZ VILLA, A.; MAC INTYRE, J.R.; MEDINA OVANDO, A.; PERAZZO, CARLOS ALBERTO

Fluids

MDPI

Lugar: Basel; Año: 2019 vol. 4

2311-5521

Spontaneous radial imbibition into thin circular samples of porous material when they have been subjected to radial temperature differences was analyzed theoretically and experimentally. The use of the Darcy equation allows us to take into account temperature variations in the dynamic viscosity and surface tension in order to found the one-dimensional equation for the imbibition fronts. Experiments in blotting paper show the good fit between the experimental data to theoretical profiles.