Planet Latorre, RamonDíaz Piola, LautaroOrtín, Jordi, 1959-2020-04-292020-04-292020-04-082469-990Xhttps://hdl.handle.net/2445/157966We study experimentally the quasistatic displacement of an oil-air front across a localized constriction in a model open fracture. The front experiences capillary jumps at one end of the constriction in both imbibition and drainage, leading to a microscale pressure-saturation hysteresis cycle. At the other end the front is reversibly pinned. A condition of local mechanical equilibrium between the restoring elasticity of the front and the distortion produced by the local change in aperture captures all we measure quantitatively, in terms of material and geometrical properties only.10 p.application/pdfeng(c) American Physical Society, 2020Dinàmica de fluidsAnàlisi numèricaFluid dynamicsNumerical analysisinfo:eu-repo/semantics/article6990192020-04-29info:eu-repo/semantics/openAccess