Avalanche dynamics in fluid imbibition near the depinning transition.
We study avalanche dynamics and local activity of forced-flow imbibition fronts in disordered media. We focus on the front dynamics as the mean velocity of the interface v is decreased and the pinning state is approached. Scaling arguments allow us to obtain the statistics of avalanche sizes and durations, which become power-law distributed due to the existence of a critical point at v=0 . Results are compared with phase-field numerical simulations.
Pradas
Marc
M
Departament d'Estructura i Constituents de la Matèria, Universitat de Barcelona, Avinguda Diagonal 647, E-08028 Barcelona, Spain.
López
Juan M
JM
Hernández-Machado
A
A
D003198:Computer Simulation; D008956:Models, Chemical; D015233:Models, Statistical; D017711:Nonlinear Dynamics; D012212:Rheology / Q000379:methods*