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An Efficient Parallel Approximate Algorithm for Solving Time Fractional Reaction-Diffusion Equations

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  • Xiaozhong Yang
  • Lifei Wu

Abstract

In this paper, we construct pure alternative segment explicit-implicit (PASE-I) and implicit-explicit (PASI-E) difference algorithms for time fractional reaction-diffusion equations (FRDEs). They are a kind of difference schemes with intrinsic parallelism and based on classical explicit scheme and classical implicit scheme combined with alternating segment technology. The existence and uniqueness analysis of solutions of the parallel difference schemes are given. Both the theoretical proof and the numerical experiment show that PASE-I and PASI-E schemes are unconditionally stable and convergent with second-order spatial accuracy and order time accuracy. Compared with implicit scheme and E-I (I-E) scheme, the computational efficiency of PASE-I and PASI-E schemes is greatly improved. PASE-I and PASI-E schemes have obvious parallel computing properties, which shows that the difference schemes with intrinsic parallelism in this paper are feasible to solve the time FRDEs.

Suggested Citation

  • Xiaozhong Yang & Lifei Wu, 2020. "An Efficient Parallel Approximate Algorithm for Solving Time Fractional Reaction-Diffusion Equations," Mathematical Problems in Engineering, Hindawi, vol. 2020, pages 1-17, August.
    • Handle: RePEc:hin:jnlmpe:4524387
    DOI: 10.1155/2020/4524387
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