Abstract
Modelling fluid–rock interactions is important across a broad range of geological areas. Any realistic model must consider heterogeneous porosity, mineral dissolution and precipitation and the feedback between these reactions and porosity. To model fluid flow in heterogeneous media we use the lattice Bhatnagar–Gross–Krook method, which is a discrete method for solving the Navier–Stokes equation. Modelling chemical interactions involves dissolution/precipitation and transport of the dissolved species. The dissolution/precipitation of species follows chemical mass balance equations and rate laws while the transport of dissolved material is modelled by solving the advection–diffusion equation. The numerically modelled geochemistry is being validated against laboratory flow-through column experiments.
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