Communications on Applied Mathematics and Computation ›› 2025, Vol. 7 ›› Issue (1): 315-346.doi: 10.1007/s42967-023-00282-w

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Numerical Approach for Solving Two-Dimensional Time-Fractional Fisher Equation via HABC-N Method

Ren Liu, Lifei Wu   

  1. Institute of Information and Computation, School of Mathematics and Physics, North China Electric Power University, Beijing 102206, China
  • Received:2023-02-21 Revised:2023-04-19 Accepted:2023-05-02 Online:2025-04-21 Published:2025-04-21
  • Supported by:
    LW is supported by the National Natural Science Foundation of China (No.11371135) and the Fundamental Research Funds for the Central Universities (No.2021MS045).

Abstract: For the two-dimensional time-fractional Fisher equation (2D-TFFE), a hybrid alternating band Crank-Nicolson (HABC-N) method based on the parallel finite difference technique is proposed. The explicit difference method, implicit difference method, and C-N difference method are used simultaneously with the alternating band technique to create the HABC-N method. The existence of the solution and unconditional stability for the HABC-N method, as well as its uniqueness, are demonstrated by theoretical study. The HABC-N method’s convergence order is O(τ2-α + h12 + h22). The theoretical study is bolstered by numerical experiments, which establish that the 2D-TFFE can be solved using the HABC-N method.

Key words: Two-dimensional time-fractional Fisher equation (2D-TFFE), Hybrid alternating band Crank-Nicolson (HABC-N) method, Unconditional stability, Convergence order, Parallel computing

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