HR: 09:45h
AN: H11I-07    [Abstracts]
TI: Steady-state two phase flow in porous media: experiments and simulations
AU: * Lovoll, G
EM: grunde.lovoll@fys.uio.no
AF: Department of Physics, University of Oslo, PB 1048 Blindern, Oslo, NO-0216, Norway
AU: Tallakstad, K T
EM: k.t.tallakstad@fys.uio.no
AF: Department of Physics, University of Oslo, PB 1048 Blindern, Oslo, NO-0216, Norway
AU: Ramstad, T
EM: homaram@tf.phys.ntnu.no
AF: Department of Physics, Norwegian University of Science and Technology, Hoegskoleringen 5, Trondheim, NO-7491, Norway
AU: Knudsen, H A
EM: h.a.knudsen@fys.uio.no
AF: Department of Physics, University of Oslo, PB 1048 Blindern, Oslo, NO-0216, Norway
AU: Maloy, K J
EM: k.j.maloy@fys.uio.no
AF: Department of Physics, University of Oslo, PB 1048 Blindern, Oslo, NO-0216, Norway
AU: Hansen, A
EM: alex.hansen@phys.ntnu.no
AF: Department of Physics, Norwegian University of Science and Technology, Hoegskoleringen 5, Trondheim, NO-7491, Norway
AB: We report on experimental and numerical studies of steady-state two-phase flow in a two-dimensional porous medium. Experimentally the wetting and the non-wetting phase are injected simultaneously from alternating inlet points into a porous Hele-Shaw cell initially filled with wetting fluid. Transient behavior is observed in time and space, such that a certain distance behind the front, fully developed fragmented steady-state flow develops. Numerical studies confirm this transition and support the conclusion that the steady-state phase is fragmented and dominated by bubble dynamics, allowing for a statistical description on the macroscopic-scale in terms of effective behavior and on the pore-scale in terms of cluster-size distributions. The latter is shown to obey a scaling-law with the Darcy velocity.
DE: 1832 Groundwater transport
DE: 1847 Modeling
DE: 1875 Vadose zone
DE: 1894 Instruments and techniques: modeling
DE: 1895 Instruments and techniques: monitoring
SC: Hydrology [H]
MN: 2007 Fall Meeting