Abstract
We consider a finite volume scheme, using the general mesh of [8], for the TFDE (time fractional diffusion equation) in any space dimension. The time discretization is performed using a uniform mesh. We prove a new discrete \(L^\infty (H^1)\)–a priori estimate. Such a priori estimate is proved thanks to the use of the new tool of the discrete Laplace operator developed recently in [7]. Thanks to this a priori estimate, we prove a new optimal convergence order in the discrete \(L^\infty (H^1)\)–norm. These results improve the ones of [1, 4] which dealt respectively with finite volume and GDM (Gradient Discretization Method) for the TFDE. In [4], we only proved a priori estimate and error estimate in the discrete \(L^\infty (L^2)\)–norm whereas in [1] we proved a priori estimate and error estimate in the discrete \(L^2(H^1)\)–norm. The a priori estimate as well as the error estimate presented here were stated without proof for the first time in [3, Remark 1, p. 443] in the context of the general framework of GDM and [2, Remark 1, p. 205] in the context of finite volume methods. They also were mentioned, as future works, in [1, Remark 4.1].
Access this chapter
Tax calculation will be finalised at checkout
Purchases are for personal use only
References
Bradji, A.: A new analysis for the convergence of the gradient discretization method for multidimensional time fractional diffusion and diffusion-wave equations. Comput. Math. Appl. 79(2), 500–520 (2020)
Bradji, A.: A second order time accurate SUSHI method for the time-fractional diffusion equation. In: Nikolov, G. et al. (ed.) Numerical Methods and Applications. 9th International Conference, NMA 2018, Borovets, Bulgaria, August 20–24, 2018. Revised Selected Papers. Lecture Notes in Computer Science, vol. 11189, pp. 197-206. Cham: Springer (2019)
Bradji, A.: Notes on the convergence order of gradient schemes for time fractional differential equations. C. R. Math. Acad. Sci. Paris 356(4), 439–448 (2018)
Bradji, A., Fuhrmann, J.: Convergence order of a finite volume scheme for the time-fractional diffusion equation. In: Numerical Analysis and Its Applications. Lecture Notes in Computer Science, vol. 10187, pp. 33–45. Springer, Cham (2017)
Bradji, A., Fuhrmann, J.: Some abstract error estimates of a finite volume scheme for a nonstationary heat equation on general nonconforming multidimensional spatial meshes. Appl. Math. 58(1), 1–38 (2013)
Droniou, J., Eymard, R., Gallouët, T., Guichard, C., Herbin, R.: The Gradient Discretisation Method. Mathématiques et Applications, vol. 82. Springer Nature Switzerland AG, Basel, Switzerland (2018)
Eymard, R., Gallouët, T., Herbin, R., Linke, A.: Finite volume schemes for the biharmonic problem on general meshes. Math. Comput. 81(280), 2019–2048 (2012)
Eymard, R., Gallouët, T., Herbin, R.: Discretization of heterogeneous and anisotropic diffusion problems on general nonconforming meshes. IMA J. Numer. Anal. 30(4), 1009–1043 (2010)
Jin, B., Lazarov, R., Liu, Y., Zhou, Z.: The Galerkin finite element method for a multi-term time-fractional diffusion equation. J. Comput. Phys. 281, 825–843 (2015)
Lin, Y., Xu, C.: Finite difference/spectral approximations for the time-fractional diffusion equation. J. Comput. Phys. 225, 1533–1552 (2007)
Sidi Ammi, M.R., Jamiai, I., Torres, D.F.M.: A finite element approximation for a class of Caputo time-fractional diffusion equations. Comput. Math. Appl. 78(5), 1334–1344 (2019)
Xu, Q., Zheng, Z.: Discontinuous Galerkin method for time fractional diffusion equation. J. Inf. Comput. Sci. 10(11), 3253–3264 (2013)
Author information
Authors and Affiliations
Corresponding author
Editor information
Editors and Affiliations
Rights and permissions
Copyright information
© 2020 The Editor(s) (if applicable) and The Author(s), under exclusive license to Springer Nature Switzerland AG
About this paper
Cite this paper
Bradji, A. (2020). A New Optimal \(L^{\infty }(H^1)\)–Error Estimate of a SUSHI Scheme for the Time Fractional Diffusion Equation. In: Klöfkorn, R., Keilegavlen, E., Radu, F.A., Fuhrmann, J. (eds) Finite Volumes for Complex Applications IX - Methods, Theoretical Aspects, Examples. FVCA 2020. Springer Proceedings in Mathematics & Statistics, vol 323. Springer, Cham. https://doi.org/10.1007/978-3-030-43651-3_27
Download citation
DOI: https://doi.org/10.1007/978-3-030-43651-3_27
Published:
Publisher Name: Springer, Cham
Print ISBN: 978-3-030-43650-6
Online ISBN: 978-3-030-43651-3
eBook Packages: Mathematics and StatisticsMathematics and Statistics (R0)