1. High-order algorithms for riesz derivative and their applications (IV).
- Author
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Ding, Hengfei and Li, Changpin
- Subjects
- *
ADVECTION-diffusion equations , *RIESZ spaces , *FINITE differences , *DIFFERENTIAL-difference equations , *GENERATING functions , *FINITE difference method , *ALGORITHMS - Abstract
The main goal of this article is to establish a new 4th-order numerical differential formula to approximate Riesz derivatives which is obtained by means of a newly established generating function. Then the derived formula is used to solve the Riesz space fractional advection-dispersion equation. Meanwhile, by the energy method, it is proved that the difference scheme is unconditionally stable and convergent with order 𝓞(τ2 + h4). Finally, several numerical examples are given to show that the numerical convergence orders of the numerical differential formulas and the finite difference scheme are in line with the theoretical analysis. [ABSTRACT FROM AUTHOR]
- Published
- 2020
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