GMT3D - coupling MT3D and MODPHRQ for modelling mulitcomponent reactive transport
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Date
1997-09-29
Journal Title
Journal ISSN
Volume Title
Publisher
World Scientific
Abstract
Reactive transport models have been undergoing development for several decades. Many codes have been documented in the literature and applied to various problems [3] especially in the natural resources, mining and radioactive waste disposal industries. GMT3D is a new three-dimensional multicomponent reactive transport model
developed to simulate the aqueous transport and equilibrium geochemistry of multiple chemical species in solution. The code couples MT3DMS [13], a multicomponent version of the three-dimensional transport code MT3D [12], with the equilibrium geochemical code MODPHRQ MODPHRQ is an extended and updated version of
the USGS code PHREEQE.
Three major conceptual choices were made in developing GMT3D. The first choice was for the type of geochemical model, the choices being kinetic or equilibrium type models. Equilibrium chemistry was chosen over kinetic chemistry since thermodynamic data is more extensive and much better documented than kinetic data. The
second choice was for a conceptual model for the transport of aqueous solutes. The deterministic PDE describing advective-dispersive transport was chosen. The final choice was on how to couple the transport PDE’s with the non-linear equations describing equilibrium chemistry. Details on the coupling are presented in Section 3. © World Scientific
Description
Physical copy held by ANSTO Library at DDC: 519.6/7
Keywords
Mining, Porosity, Geochemistry, Reaction kinetics, Equilibrium, Aqueous solutions, Equations
Citation
Guerin, M., & Zheng, C. (1997). GMT3D - coupling MT3D and MODPHRQ for modelling multicomponent reactive transport. Paper presented to Computational techniques and applications: CTAC 97: proceedings of the eighth biennial conference : University of Adelaide, Adelaide, Australia, 29 September-1 October 1997. In Noye, J. (ed) Computational techniques and applications: CTAC 97 : proceedings of the eighth biennial conference : University of Adelaide, Adelaide, Australia, 29 September-1 October 1997, (pp. 265-272).