Adaptive discontinuous Galerkin methods for solving an incompressible Stokes flow problem with slip boundary condition of frictional type

F Wang, M Ling, W Han, F Jing - Journal of Computational and Applied …, 2020 - Elsevier
We consider the numerical solution of a variational inequality arising in the study of an
incompressible Stokes flow with a nonlinear slip boundary condition of frictional type. We …

Recovery strategies, a posteriori error estimation, and local error indication for second‐order G/XFEM and FEM

MHC Bento, SPB Proença… - International Journal for …, 2023 - Wiley Online Library
This article presents a computationally efficient and straightforward to implement a posteriori
error estimator for second‐order G/XFEM and FEM approximations. The formulation is …

Mixed and stabilized finite element methods for the obstacle problem

T Gustafsson, R Stenberg, J Videman - SIAM Journal on Numerical Analysis, 2017 - SIAM
Mixed and Stabilized Finite Element Methods for the Obstacle Problem Page 1 Copyright © by
SIAM. Unauthorized reproduction of this article is prohibited. SIAM J. NUMER. ANAL. c 2017 …

Convergence analysis of a symmetric dual-wind discontinuous Galerkin method for a parabolic variational inequality

SB Boyana, T Lewis, A Rapp, Y Zhang - Journal of Computational and …, 2023 - Elsevier
This paper investigates a symmetric dual-wind discontinuous Galerkin (DG) method for
solving parabolic variational inequalities. By employing a symmetric dual-wind DG …

Pointwise a posteriori error analysis of a discontinuous Galerkin method for the elliptic obstacle problem

B Ayuso de Dios, T Gudi, K Porwal - IMA Journal of Numerical …, 2023 - academic.oup.com
We present a posteriori error analysis in the supremum norm for the symmetric interior
penalty discontinuous Galerkin method for the elliptic obstacle problem. We construct …

Pointwise a posteriori error analysis of quadratic finite element method for the elliptic obstacle problem

R Khandelwal, K Porwal - Journal of Computational and Applied …, 2022 - Elsevier
In this article, we study a posteriori error analysis of quadratic finite element method in the
maximum norm for the elliptic obstacle problem. We discuss the reliability and the efficiency …

Supremum-norm a posteriori error control of quadratic discontinuous Galerkin methods for the obstacle problem

R Khandelwal, K Porwal, R Singla - Computers & Mathematics with …, 2023 - Elsevier
We perform a posteriori error analysis in the supremum norm for the quadratic discontinuous
Galerkin method for the elliptic obstacle problem. We define two discrete sets (motivated by …

Pointwise adaptive non-conforming finite element method for the obstacle problem

K Porwal, R Singla - Computational and Applied Mathematics, 2024 - Springer
In this article, we develop a posteriori error analysis of a non-conforming finite element
method in the supremum norm for the elliptic obstacle problem. In the analysis, the proper …

Two new approaches for solving elliptic obstacle problems using discontinuous Galerkin methods

S Gaddam, T Gudi, K Porwal - BIT Numerical Mathematics, 2022 - Springer
The main aim of this article is to present two new ways to solve the elliptic obstacle problem
by using discontinuous Galerkin finite element methods. In Gaddam and Gudi (Comput …

An A Posteriori Analysis of Interior Penalty Methods for the Obstacle Problem of Clamped Kirchhoff Plates

SC Brenner, J Gedicke, LY Sung, Y Zhang - SIAM Journal on Numerical …, 2017 - SIAM
We develop an a posteriori analysis of C^0 interior penalty methods for the displacement
obstacle problem of clamped Kirchhoff plates. We show that a residual based error estimator …