Numerical methods for nonlocal and fractional models

M D'Elia, Q Du, C Glusa, M Gunzburger, X Tian… - Acta Numerica, 2020 - cambridge.org
Partial differential equations (PDEs) are used with huge success to model phenomena
across all scientific and engineering disciplines. However, across an equally wide swath …

Analytic approaches of the anomalous diffusion: A review

MAF Dos Santos - Chaos, Solitons & Fractals, 2019 - Elsevier
This review article aims to stress and reunite some of the analytic formalism of the
anomalous diffusive processes that have succeeded in their description. Also, it has the …

Towards a unified theory of fractional and nonlocal vector calculus

M D'Elia, M Gulian, H Olson… - Fractional Calculus and …, 2021 - degruyter.com
Nonlocal and fractional-order models capture effects that classical partial differential
equations cannot describe; for this reason, they are suitable for a broad class of engineering …

On tempered fractional calculus with respect to functions and the associated fractional differential equations

AD Mali, KD Kucche, A Fernandez… - … Methods in the …, 2022 - Wiley Online Library
The prime aim of the present paper is to continue develo** the theory of tempered
fractional integrals and derivatives of a function with respect to another function. This theory …

[BOG][B] Modeling anomalous diffusion: from statistics to mathematics

W Deng, R Hou, W Wang, P Xu - 2020 - World Scientific
Let us now consider the Fokker-Planck equation, which is a partial differential equation that
describes the time evolution of the PDF of the positions of particles, and was introduced in …

Spectral analysis and multigrid methods for finite volume approximations of space-fractional diffusion equations

M Donatelli, M Mazza, S Serra-Capizzano - SIAM Journal on Scientific …, 2018 - SIAM
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 …

High-order numerical algorithm and error analysis for the two-dimensional nonlinear spatial fractional complex Ginzburg–Landau equation

H Ding, C Li - Communications in Nonlinear Science and Numerical …, 2023 - Elsevier
In this paper, we first construct an appropriate new generating function, and then based on
this function, we establish a fourth-order numerical differential formula approximating the …

Spectral analysis and multigrid preconditioners for two-dimensional space-fractional diffusion equations

H Moghaderi, M Dehghan, M Donatelli… - Journal of Computational …, 2017 - Elsevier
Fractional diffusion equations (FDEs) are a mathematical tool used for describing some
special diffusion phenomena arising in many different applications like porous media and …

Local modification of subdiffusion by initial Fickian diffusion: multiscale modeling, analysis, and computation

X Zheng, Y Li, W Qiu - Multiscale Modeling & Simulation, 2024 - SIAM
We propose a local modification of the standard subdiffusion model by introducing the initial
Fickian diffusion, which results in a multiscale diffusion model. The developed model …

Boundary conditions for two-sided fractional diffusion

JF Kelly, H Sankaranarayanan… - Journal of Computational …, 2019 - Elsevier
This paper develops appropriate boundary conditions for the two-sided fractional diffusion
equation, where the usual second derivative in space is replaced by a weighted average of …