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Title: Lattice gas automata for flow and transport in geochemical systems

Lattice gas automata models are described, which couple solute transport with chemical reactions at mineral surfaces within pore networks. Diffusion in a box calculations are illustrated, which compare directly with Fickian diffusion. Chemical reactions at solid surfaces, including precipitation/dissolution, sorption, and catalytic reaction, can be examined with the model because hydrodynamic transport, solute diffusion and mineral surface processes are all treated explicitly. The simplicity and flexibility of the approach provides the ability to study the interrelationship between fluid flow and chemical reactions in porous materials, at a level of complexity that has not previously been computationally possible.
Authors:
; ; ; ;
Publication Date:
OSTI Identifier:
10136722
Report Number(s):
LA-UR--92-924; CONF-920761--11
ON: DE92011236
DOE Contract Number:
W-7405-ENG-36
Resource Type:
Conference
Resource Relation:
Conference: 7. water-rock interaction conference,Park City, UT (United States),9-23 Jul 1992; Other Information: PBD: [1992]
Research Org:
Los Alamos National Lab., NM (United States)
Sponsoring Org:
USDOE, Washington, DC (United States)
Country of Publication:
United States
Language:
English
Subject:
54 ENVIRONMENTAL SCIENCES; 58 GEOSCIENCES; FLUID FLOW; GEOCHEMISTRY; HEXAGONAL LATTICES; HYDRODYNAMIC MODEL; GEOLOGY; DIAGENESIS; WEATHERING; COMPUTERIZED SIMULATION; CHEMICAL REACTIONS; RADIONUCLIDE MIGRATION; GROUND WATER; POROSITY 540210; 580000; BASIC STUDIES; GEOSCIENCES