Phys Rev E Stat Nonlin Soft Matter Phys 2008 Nov 6;78(5 Pt 1):051302. Epub 2008 Nov 6.
Laboratoire de Physique et Mécanique des Milieux Hétégogènes (PMMH), UMR 7636 CNRS, ESPCI, Université Paris 6, Paris Cedex 05, France.
We compare quantitatively two experimental situations concerning injection of a miscible fluid into an initially jammed granular medium saturated with the same fluid, confined in a Hele-Shaw cell. The two experiments are identical, apart from the interstitial and injected fluid, which is in one case air injected into a dry granular packing, and in the other case silicone oil injected into a dense suspension. In spite of the strong differences regarding the nature of the two fluids, strikingly similar dynamical and geometrical features are identified as functions of the control parameters: cell thickness and applied fluid injection pressure. Read More