Stability and convergence of a finite volume method for the space fractional advection-dispersion equation

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Abstract

We consider the space fractional advection-dispersion equation, which is obtained from the classical advection-diffusion equation by replacing the spatial derivatives with a generalised derivative of fractional order. We derive a finite volume method that utilises fractionally-shifted Grünwald formulae for the discretisation of the fractional derivative, to numerically solve the equation on a finite domain with homogeneous Dirichlet boundary conditions. We prove that the method is stable and convergent when coupled with an implicit timestepping strategy. Results of numerical experiments are presented that support the theoretical analysis. © 2013 Elsevier B.V. All rights reserved.

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Hejazi, H., Moroney, T., & Liu, F. (2014). Stability and convergence of a finite volume method for the space fractional advection-dispersion equation. Journal of Computational and Applied Mathematics, 255, 684–697. https://doi.org/10.1016/j.cam.2013.06.039

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