Spectral analysis and multigrid methods for finite volume approximations of space-fractional diffusion equations
We consider a boundary value problem in weak form of a steady-state Riesz space-
fractional diffusion equation (FDE) of order 2-α with 0<α<1. By using a finite volume …
fractional diffusion equation (FDE) of order 2-α with 0<α<1. By using a finite volume …
Nonuniform difference schemes for multi-term and distributed-order fractional parabolic equations with fractional Laplacian
In this paper, the multi-term temporal fractional order and temporal distributed-order
parabolic equations with fractional Laplacian are numerically investigated. Several …
parabolic equations with fractional Laplacian are numerically investigated. Several …
On τ-preconditioner for a novel fourth-order difference scheme of two-dimensional Riesz space-fractional diffusion equations
YY Huang, W Qu, SL Lei - Computers & Mathematics with Applications, 2023 - Elsevier
In this paper, a τ-preconditioner for a novel fourth-order finite difference scheme of two-
dimensional Riesz space-fractional diffusion equations (2D RSFDEs) is considered, in …
dimensional Riesz space-fractional diffusion equations (2D RSFDEs) is considered, in …
[HTML][HTML] A rational preconditioner for multi-dimensional Riesz fractional diffusion equations
L Aceto, M Mazza - Computers & Mathematics with Applications, 2023 - Elsevier
We propose a rational preconditioner for an efficient numerical solution of linear systems
arising from the discretization of multi-dimensional Riesz fractional diffusion equations. In …
arising from the discretization of multi-dimensional Riesz fractional diffusion equations. In …
Simulation of nonlinear fractional dynamics arising in the modeling of cognitive decision making using a new fractional neural network
AH Hadian Rasanan, N Bajalan… - … Methods in the …, 2020 - Wiley Online Library
By the rapid growth of available data, providing data‐driven solutions for nonlinear
(fractional) dynamical systems becomes more important than before. In this paper, a new …
(fractional) dynamical systems becomes more important than before. In this paper, a new …
A novel physics-based preconditioner for nodal integral method using JFNK for 2D Burgers equation
Abstract Nodal Integral Methods (NIM) are prevalent for solving neutron transport equations.
Due to the success of this method for solving neutron transport problems, the method was …
Due to the success of this method for solving neutron transport problems, the method was …
A new FV scheme and fast cell-centered multigrid solver for 3D anisotropic diffusion equations with discontinuous coefficients
In this paper, an efficient cell-centered extrapolation cascadic multigrid (CEXCMG) method
is proposed for solving large linear system of equations resulting from finite volume (FV) …
is proposed for solving large linear system of equations resulting from finite volume (FV) …
A spatial fourth-order maximum principle preserving operator splitting scheme for the multi-dimensional fractional Allen-Cahn equation
In this paper, we consider the numerical study for the multi-dimensional fractional-in-space
Allen-Cahn equation with homogeneous Dirichlet boundary condition. By utilizing Strang's …
Allen-Cahn equation with homogeneous Dirichlet boundary condition. By utilizing Strang's …
Preconditioners for fractional diffusion equations based on the spectral symbol
N Barakitis, SE Ekström… - Numerical Linear Algebra …, 2022 - Wiley Online Library
It is well known that the discretization of fractional diffusion equations with fractional
derivatives α∈(1, 2) α ∈\left (1, 2\right), using the so‐called weighted and shifted Grünwald …
derivatives α∈(1, 2) α ∈\left (1, 2\right), using the so‐called weighted and shifted Grünwald …
Multigrid preconditioners for anisotropic space-fractional diffusion equations
We focus on a two-dimensional time-space diffusion equation with fractional derivatives in
space. The use of Crank-Nicolson in time and finite differences in space leads to dense …
space. The use of Crank-Nicolson in time and finite differences in space leads to dense …