<p>This paper proposes a high-accuracy algorithm for time fractional differential equations with Caputo-Hadamard derivative. It is well known that the nonlocality inherent in fractional derivatives imposes a significant computational burden. To mitigate this issue, a spectral collocation method is adopted to preliminarily enhance computational efficiency. The resulting numerical scheme is further extended to a multi-domain framework, which enables the parallel implementation. Building upon this, a parallel algorithm is developed for the Caputo-Hadamard type initial value problem. Stability characteristics of the proposed multi-domain spectral collocation scheme is numerically discussed. Numerical examples illustrate the feasibility, stability, and convergence of the multi-domain spectral collocation method in solving both time fractional and time-space fractional differential equations with temporal Caputo-Hadamard derivative. The comparison between the proposed scheme in parallel and in sequence demonstrates the high-efficiency of the parallel multi-domain spectral collocation algorithm.</p>

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A parallel multi-domain spectral collocation algorithm for the Caputo-Hadamard type time fractional differential equation

  • Min Cai,
  • Jingjing Cao,
  • Changpin Li

摘要

This paper proposes a high-accuracy algorithm for time fractional differential equations with Caputo-Hadamard derivative. It is well known that the nonlocality inherent in fractional derivatives imposes a significant computational burden. To mitigate this issue, a spectral collocation method is adopted to preliminarily enhance computational efficiency. The resulting numerical scheme is further extended to a multi-domain framework, which enables the parallel implementation. Building upon this, a parallel algorithm is developed for the Caputo-Hadamard type initial value problem. Stability characteristics of the proposed multi-domain spectral collocation scheme is numerically discussed. Numerical examples illustrate the feasibility, stability, and convergence of the multi-domain spectral collocation method in solving both time fractional and time-space fractional differential equations with temporal Caputo-Hadamard derivative. The comparison between the proposed scheme in parallel and in sequence demonstrates the high-efficiency of the parallel multi-domain spectral collocation algorithm.