HR: 1330h
AN: H42F-1146    [PDF]
TI: Numerical simulations of the dissolution of calcite fractures
AU: * Ladd, T
EM: ladd@che.ufl.edu
AF: Chemical Engineering Department, University of Florida PO Box 116005, Gainesville, FL 32611-6005 United States
AU: Szymczak, P
EM: pszymczak@che.ufl.edu
AF: Chemical Engineering Department, University of Florida PO Box 116005, Gainesville, FL 32611-6005 United States
AB: The dissolution of fractured calcite in aqueous solutions of carbon dioxide is investigated numerically. The chemical kinetics is described by Plummer-Wigley-Parkhurst (PWP) model, in which the dissolution of calcite is a result of simultaneous reactions with hydrogen ions, carbonic acid and water. The velocity field in the fracture is calculated using a lattice-Boltzmann technique, while the transport of dissolved species is modeled by a random walk algorithm. The numerically modeled morphological changes in the fracture are compared with laboratory experiments on dissolution of Carrara marble.
DE: 1815 Erosion and sedimentation
DE: 1869 Stochastic processes
DE: 3230 Numerical solutions
SC: Hydrology [H]
MN: 2003 Fall Meeting