The control volume radial basis function method CV-RBF with Richardson extrapolation in geochemical problems

W. F. Florez, M. Portapila, A. F. Hill, H. Power, P. Orsini, C. A. Bustamante

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    Resumen

    The aim of this paper is to present how to implement a control volume approach improved by Hermite radial basis functions (CV-RBF) for geochemical problems. A multi-step strategy based on Richardson extrapolation is proposed as an alternative to the conventional dual step sequential non-iterative approach (SNIA) for coupling the transport equations with the chemical model. Additionally, this paper illustrates how to use PHREEQC to add geochemical reaction capabilities to CV-RBF transport methods. Several problems with different degrees of complexity were solved including cases of cation exchange, dissolution, dissociation, equilibrium and kinetics at different rates for mineral species. The results show that the solution and strategies presented here are effective and in good agreement with other methods presented in the literature for the same cases.

    Idioma originalInglés
    Páginas (desde-hasta)151-163
    Número de páginas13
    PublicaciónComputers and Geosciences
    Volumen76
    DOI
    EstadoPublicada - 1 mar. 2015

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    © 2015 Elsevier Ltd.

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