HR: 1330h
AN: H32A-0531    [PDF]
TI: Multi-Phase Flow at the Pore-Scale: Making Lattice Boltzmann Simulations fit Experimental Data
AU: * Schaap, M G
EM: mschaap@ussl.ars.usda.gov
AF: GEBJ Salinity Laboratory, 450 W. Big Springs Road, Riverside, CA 92507 United States
AU: de Willigen, P
EM: p.willigen@science.uva.nl
AF: Institute for Biodiversity and Ecosystem Dynamics, University of Amsterdam, Nieuwe Achtergracht 166, Amsterdam, 1018 VZ Netherlands
AU: Christensen, B S
EM: brc@er.dtu.dk
AF: Environment & Resources, Technical University of Denmark, Building 115, Lyngby, DK-2800 Denmark
AU: Wildenschild, D
EM: wildend@geo.orst.edu
AF: Department of Geosciences, Oregon State University, 255 Wilkinson Hall, Corvalis, OR 97331 United States
AU: Culligan, K A
EM: kculliga@nd.edu
AF: Department of Civil Engineering, University of Notre Dame, University of Notre Dame. Notre dame, Notre Dame, IN 46556 United States
AU: Bouten, W
EM: w.bouten@science.uva.nl
AF: Institute for Biodiversity and Ecosystem Dynamics, University of Amsterdam, Nieuwe Achtergracht 166, Amsterdam, 1018 VZ Netherlands
AU: Hogh Jensen, K
EM: khj@geo.geol.ku.dk
AF: Geological Institute, University of Copenhagen, Oster Voldgade 10, Copenhagen, DK-1350 Denmark
AB: In recent years significant progress has been made in the development of numerical models to describe flow and transport at the pore-scale. A promising modeling technique is the lattice Boltzmann method. However, the problem of how to identify appropriate lattice Boltzmann parameters and how to scale the simulations to comply with physical data is often not addressed. By looking at simple multi-phase flow systems we discuss the parametization and scaling issues. We make the link to real physical data by comparing simulations with observations of pore-scale two-phase flow. The experimental data consist of three-dimensional pore-scale images of oil-water drainage and imbibition experiments in a glass bead porous medium. The images were obtained at a resolution of 17 microns per voxel using the GSECARS microtomography beamline at the Advanced Photon Source, Argonne National Laboratory. From the images we compute fluid saturations and fluid-fluid interfacial areas enabling both a qualitative and quantitative comparison with lattice Boltzmann simulation results.
DE: 1875 Unsaturated zone
DE: 1894 Instruments and techniques
SC: Hydrology [H]
MN: 2003 Fall Meeting