HR: 12:05h
AN: H32A-08    [Abstracts]
TI: Pore-Scale Simulation of Multiphase Flow in Porous and Fractured Media Using Smoothed Particle Hydrodynamics.
AU: * Tartakovsky, A M
EM: sasha@hwr.arizona.edu
AF: INEEL, PO Box 1625 MS 2025 , Idaho Falls, ID 83415-2025 United States
AU: Meakin, P
EM: meakp@inel.gov
AF: INEEL, PO Box 1625 MS 2025 , Idaho Falls, ID 83415-2025 United States
AB: A two-dimensional numerical model based on smoothed particle hydrodynamics (SPH) was used to simulate unsaturated and multiphase flow on a pore scale in porous and fractured media. A combination of standard SPH equations with pair-wise fluid-fluid and fluid-solid particle-particle interactions allowed surface tension and realistic three-phase contact dynamics to be simulated. The accuracy of the model was verified by calculating the surface tension from simulations of small-amplitude fluid drop oscillations, capillary rise and drop movement between two parallel plates. All three experiments led to a consistent value for the surface tension. The dependency of receding and advancing contact angles on droplet velocity was studied. Incorporation of surface tension and fluid-solid interactions allowed unsaturated and multiphase flow in porous and fractured media to be realistically simulated. The simulation results compare well with laboratory experiments and analytical solutions.
DE: 5104 Fracture and flow
DE: 5112 Microstructure
DE: 5114 Permeability and porosity
DE: 5139 Transport properties
DE: 3210 Modeling
SC: Hydrology [H]
MN: 2004 AGU Fall Meeting