Avalanche dynamics in fluid imbibition near the depinning transition

Pradas, Marc; López, Juan M. and Hernández-Machado, A. (2009). Avalanche dynamics in fluid imbibition near the depinning transition. Physical Review E, 80(5) 050101.

DOI: https://doi.org/10.1103/PhysRevE.80.050101

Abstract

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.

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