Communications on Applied Mathematics and Computation ›› 2025, Vol. 7 ›› Issue (1): 392-408.doi: 10.1007/s42967-023-00295-5

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An Order Reduction Method for the Nonlinear Caputo-Hadamard Fractional Diffusion-Wave Model

Jieying Zhang1, Caixia Ou1, Zhibo Wang1, Seakweng Vong2   

  1. 1 School of Mathematics and Statistics, Guangdong University of Technology, Guangzhou 510006, Guangdong, China;
    2 Department of Mathematics, University of Macau, Macao 999078, China
  • Received:2023-03-06 Revised:2023-06-02 Accepted:2023-06-29 Online:2025-04-21 Published:2025-04-21
  • Supported by:
    This research is supported by the National Natural Science Foundation of China (No. 11701103), the Natural Science Foundation of Guangdong Province of China (Nos. 2022A1515012147, 2023A1515011504), and University of Macau (File Nos. MYRG2020-00035-FST, MYRG2018-00047-FST).

Abstract: In this paper, the numerical solutions of the nonlinear Hadamard fractional diffusion-wave model with the initial singularity are investigated. Firstly, the model is transformed into coupled equations by virtue of a symmetric fractional-order reduction method. Then the Llog,2-1σ formula on nonuniform grids is applied to approach to the time fractional derivative. In addition, the discrete fractional Grönwall inequality is used to analyze the optimal convergence of the constructed numerical scheme by the energy method. The accuracy of the theoretical analysis will be demonstrated by means of a numerical experiment at the end.

Key words: Caputo-Hadamard fractional differential equations (FDEs), Symmetric fractional-order reduction method, Nonuniform mesh, Stability and convergence

CLC Number: