HR: 11:50h
AN: H32A-07    [Abstracts]
TI: Lattice Boltzmann Methods and Their Boundary Conditions for Solute Transport
AU: * Sukop, M C
EM: sukopm@fiu.edu
AF: Florida International University, University Park, MIAMI, FL 33199 United States
AU: Thorne, D T
EM: thorned@fiu.edu
AF: Florida International University, University Park, MIAMI, FL 33199 United States
AU: Anwar, S
EM: sanwa001@fiu.edu
AF: Florida International University, University Park, MIAMI, FL 33199 United States
AB: Lattice Boltzmann methods (LBM) are proving exceptionally versatile for modeling flow and solute transport in porous media. A number of authors have demonstrated solute transport capabilities, but little appears to have been done to evaluate these solutions in the context of well-known analytical solutions of the convection-dispersion equation, boundary conditions, and concentration detection modes. We consider LBM simulations of Taylor dispersion and dispersion in porous media in light of four 'classical' analytical solutions and their boundary conditions (BCs). 'First type' BCs are simple constant concentration boundaries while 'third type' BCs specify solute flux and allow for simultaneous convective and dispersive flux across the boundary. We also impose a zero dispersive/diffusive flux BC. We use resident and flux-averaged concentration detection modes. We explore different LBM boundary formulations.
DE: 3210 Modeling
DE: 3230 Numerical solutions
DE: 1832 Groundwater transport
SC: Hydrology [H]
MN: 2004 AGU Fall Meeting