Results 31 to 40 of about 400,777 (180)

On a Novel Numerical Scheme for Riesz Fractional Partial Differential Equations

open access: yesMathematics, 2021
In this paper, we consider numerical solutions for Riesz space fractional partial differential equations with a second order time derivative. We propose a Galerkin finite element scheme for both the temporal and spatial discretizations.
Junjiang Lai, Hongyu Liu
doaj   +1 more source

Numerical analysis of the planewave discretization of some orbital-free and Kohn-Sham models [PDF]

open access: yes, 2010
We provide a priori error estimates for the spectral and pseudospectral Fourier (also called planewave) discretizations of the periodic Thomas-Fermi-von Weizs\"{a}cker (TFW) model and for the spectral discretization of the Kohn-Sham model, within the ...
Cancès, Eric   +2 more
core   +5 more sources

Discontinuous Galerkin method for an integro-differential equation modeling dynamic fractional order viscoelasticity [PDF]

open access: yes, 2015
An integro-differential equation, modeling dynamic fractional order viscoelasticity, with a Mittag-Leffler type convolution kernel is considered.
Larsson, Stig   +2 more
core   +2 more sources

Space-time adaptive finite elements for nonlocal parabolic variational inequalities [PDF]

open access: yes, 2019
This article considers the error analysis of finite element discretizations and adaptive mesh refinement procedures for nonlocal dynamic contact and friction, both in the domain and on the boundary. For a large class of parabolic variational inequalities
Gimperlein, Heiko, Stocek, Jakub
core   +2 more sources

A priori error estimates for a discretized poro-elastic–elastic system solved by a fixed-stress algorithm

open access: yesOil & Gas Science and Technology, 2019
We consider a poro-elastic region embedded into an elastic non-porous region. The elastic displacement equations are discretized by a continuous Galerkin scheme, while the flow equations for the pressure in the poro-elastic medium are discretized by ...
Girault Vivette   +3 more
doaj   +1 more source

Finite element approximation of non-Fickian polymer diffusion [PDF]

open access: yes, 2009
The problem of nonlinear non-Fickian polymer diffusion as modelled by a diffusion equation with an adjoined spatially local evolution equation for a viscoelastic stress is considered (see, for example, Cohen, White & Witelski, SIAM J. Appl. Math.
Bauermeister, N, Shaw, S
core   +1 more source

Method of Particular Solutions for Second-Order Differential Equation with Variable Coefficients via Orthogonal Polynomials

open access: yesJournal of Function Spaces, 2023
In this paper, with classic Legendre polynomials, a method of particular solutions (MPS, for short) is proposed to solve a kind of second-order differential equations with a variable coefficient on a unit interval.
Huantian Xie   +3 more
doaj   +1 more source

A two-layer Crank–Nicolson linear finite element methods for second-order hyperbolic optimal control problems

open access: yesResults in Applied Mathematics, 2023
In this paper, we consider a two-layer Crank–Nicolson scheme combined with linear finite element approximation for second-order hyperbolic optimal control problems with control constraints.
Xiaowu Li, Yuelong Tang
doaj   +1 more source

Robust a priori and a posteriori error analysis for the approximation of Allen–Cahn and Ginzburg–Landau equations past topological changes [PDF]

open access: yes, 2011
A priori and a posteriori error estimates are derived for the numerical approximation of scalar and complex valued phase field models. Particular attention is devoted to the dependence of the estimates on a small parameter and to the validity of the ...
Bartels, Sören   +2 more
core   +1 more source

A Priori Error Estimates for Approximation of Parabolic Boundary Value Problems [PDF]

open access: yesSIAM Journal on Numerical Analysis, 1975
The L2-error estimates are established for the continuous time Faedo-Galerkin approximation to solutions of a linear parabolic initial boundary value problem that has elliptic part of order 2m. Properties of analytic semigroups are used to obtain these estimates directly from the LZ-estimates for the corresponding steady state elliptic problem under ...
openaire   +2 more sources

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