Abstract
In this paper, finite difference schemes for solving time-space fractional diffusion equations in one dimension and two dimensions are proposed. The temporal derivative is in the Caputo-Hadamard sense for both cases. The spatial derivative for the one-dimensional equation is of Riesz definition and the two-dimensional spatial derivative is given by the fractional Laplacian. The schemes are proved to be unconditionally stable and convergent. The numerical results are in line with the theoretical analysis.
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Acknowledgements
The authors would like to thank Prof. Changpin Li for his valuable suggestions and pointing out several typos in an earlier version of this paper. This research was partially supported by the National Natural Science Foundation of China under Grant Nos. 12271339 and 12201391.
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Wang, Y., Cai, M. Finite Difference Schemes for Time-Space Fractional Diffusion Equations in One- and Two-Dimensions. Commun. Appl. Math. Comput. 5, 1674–1696 (2023). https://doi.org/10.1007/s42967-022-00244-8
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DOI: https://doi.org/10.1007/s42967-022-00244-8
Keywords
- Time-space fractional diffusion equation
- Caputo-Hadamard derivative
- Riesz derivative
- Fractional Laplacian
- Numerical analysis