Abstract
Error estimates of some high-order numerical methods for solving time fractional partial differential equations are studied in this paper. We first provide the detailed error estimate of a high-order numerical method proposed recently by Li et al. [21] for solving time fractional partial differential equation. We prove that this method has the convergence order O(τ3−α) for all α ∈ (0, 1) when the first and second derivatives of the solution are vanish at t = 0, where τ is the time step size and α is the fractional order in the Caputo sense. We then introduce a new time discretization method for solving time fractional partial differential equations, which has no requirements for the initial values as imposed in Li et al. [21]. We show that this new method also has the convergence order O(τ3−α) for all α ∈ (0, 1). The proofs of the error estimates are based on the energy method developed recently by Lv and Xu [26]. We also consider the space discretization by using the finite element method. Error estimates with convergence order O(τ3−α + h2) are proved in the fully discrete case, where h is the space step size. Numerical examples in both one- and two-dimensional cases are given to show that the numerical results are consistent with the theoretical results.
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© 2018 Diogenes Co., Sofia
Articles in the same Issue
- Frontmatter
- Editorial
- FCAA related news, events and books (FCAA–Volume 21–3–2018)
- Research Paper
- Hardy-Littlewood, Bessel-Riesz, and fractional integral operators in anisotropic Morrey and Campanato spaces
- Novel polarization index evaluation formula and fractional-order dynamics in electric motor insulation resistance
- The effect of the smoothness of fractional type operators over their commutators with Lipschitz symbols on weighted spaces
- Parallel algorithms for modelling two-dimensional non-equilibrium salt transfer processes on the base of fractional derivative model
- Some iterated fractional q-integrals and their applications
- Lebesgue regularity for nonlocal time-discrete equations with delays
- Multiple positive solutions for a boundary value problem with nonlinear nonlocal Riemann-Stieltjes integral boundary conditions
- Error estimates of high-order numerical methods for solving time fractional partial differential equations
- The Laplace transform induced by the deformed exponential function of two variables
- Attractivity for fractional evolution equations with almost sectorial operators
- The multiplicity solutions for nonlinear fractional differential equations of Riemann-Liouville type
- Well-posedness of general Caputo-type fractional differential equations
- Lyapunov-type inequalities for nonlinear fractional differential equation with Hilfer fractional derivative under multi-point boundary conditions
- Inverse source problem for a space-time fractional diffusion equation
- Erratum
- Erratum to: Invariant subspace method: A tool for solving fractional partial differential equations, in: FCAA-20-2-2017
Articles in the same Issue
- Frontmatter
- Editorial
- FCAA related news, events and books (FCAA–Volume 21–3–2018)
- Research Paper
- Hardy-Littlewood, Bessel-Riesz, and fractional integral operators in anisotropic Morrey and Campanato spaces
- Novel polarization index evaluation formula and fractional-order dynamics in electric motor insulation resistance
- The effect of the smoothness of fractional type operators over their commutators with Lipschitz symbols on weighted spaces
- Parallel algorithms for modelling two-dimensional non-equilibrium salt transfer processes on the base of fractional derivative model
- Some iterated fractional q-integrals and their applications
- Lebesgue regularity for nonlocal time-discrete equations with delays
- Multiple positive solutions for a boundary value problem with nonlinear nonlocal Riemann-Stieltjes integral boundary conditions
- Error estimates of high-order numerical methods for solving time fractional partial differential equations
- The Laplace transform induced by the deformed exponential function of two variables
- Attractivity for fractional evolution equations with almost sectorial operators
- The multiplicity solutions for nonlinear fractional differential equations of Riemann-Liouville type
- Well-posedness of general Caputo-type fractional differential equations
- Lyapunov-type inequalities for nonlinear fractional differential equation with Hilfer fractional derivative under multi-point boundary conditions
- Inverse source problem for a space-time fractional diffusion equation
- Erratum
- Erratum to: Invariant subspace method: A tool for solving fractional partial differential equations, in: FCAA-20-2-2017