10.1007/s40096-021-00397-2

Gaussian radial basis function and quadrature Sinc method for two-dimensional space-fractional diffusion equations

  1. Department of Applied Mathematics, Ferdowsi University of Mashhad, Mashhad, IR
  2. Department of Applied Mathematics, School of Mathematical Sciences, Ferdowsi University of Mashhad, Mashhad, IR

Published in Issue 2021-04-11

How to Cite

Noghrei, N., Kerayechian, A., & Soheili, A. R. (2021). Gaussian radial basis function and quadrature Sinc method for two-dimensional space-fractional diffusion equations. Mathematical Sciences, 16(1 (March 2022). https://doi.org/10.1007/s40096-021-00397-2

Abstract

Abstract The combination of Sinc quadrature method and double exponential transformation (DE) is a powerful tool to approximate the singular integrals, and radial basis functions (RBFs) are useful for the higher-dimensional space problem. In this study, we develop a numerical method base on Gaussian-RBF combined with QR-factorization of arising matrix and DE-quadrature Sinc method to approximate the solution of two-dimensional space-fractional diffusion equations. When the number of central nodes increases, the ill-conditioning of resultant matrix can be eliminated by using GRBF-QR method. Two numerical examples have been presented to test the efficiency and accuracy of the method.

Keywords

  • Space-fractional diffusion equations,
  • Riemann–Liouville fractional derivatives,
  • DE-Sinc quadrature method,
  • Gaussian-RBF

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