Preferred Flow Path Development in Heterogeneous Porous Media During Reactive Flow: A Macro-Scale Lattice-Boltzmann Method

MO Saar, SD Walsh

Research output: Contribution to conferenceAbstract


This presentation introduces a method for simulating reactive solute transport as macro-scale lattice- Boltzmann models that incorporate material permeability as a model parameter. We demonstrate that the correct constitutive behavior for solute transport is obtained using a Chapman-Enskog expansion of the governing equations. Two methods for improving the model's stability in low permeability flows are also discussed: a) an implicit formulation of the model; and b) a formulation based on the partial-bounceback approach. The model's performance is evaluated through a comparison of simulated results with analytical solutions for one- and two-dimensional flows, as well as comparing the model's predictions to advection- diffusion simulations by TOUGH2. We conclude by applying this model to reactive flow through heterogeneous porous media, simulating host-rock dissolution and formation of preferred fluid pathways.
Original languageEnglish
Publication statusPublished - 2008
Externally publishedYes
EventFall Meeting of the American-Geophysical-Union 2008 - San Francisco, United States of America
Duration: 15 Dec 200819 Dec 2008


ConferenceFall Meeting of the American-Geophysical-Union 2008
Abbreviated titleAGU 2008
Country/TerritoryUnited States of America
CitySan Francisco

Cite this