A posteriori single-and multi-goal error control and adaptivity for partial differential equations

B Endtmayer, U Langer, T Richter, A Schafelner… - arXiv preprint arXiv …, 2024 - arxiv.org
This work reviews goal-oriented a posteriori error control, adaptivity and solver control for
finite element approximations to boundary and initial-boundary value problems for stationary …

Isogeometric analysis with C1-smooth functions over multi-patch surfaces

A Farahat, B Jüttler, M Kapl, T Takacs - Computer Methods in Applied …, 2023 - Elsevier
We present a framework for the construction of a globally C 1-smooth isogeometric spline
space over a particular class of G 1-smooth multi-patch surfaces called analysis-suitable G 1 …

Two-side a posteriori error estimates for the dual-weighted residual method

B Endtmayer, U Langer, T Wick - SIAM Journal on Scientific Computing, 2020 - SIAM
In this work, we derive two-sided a posteriori error estimates for the dual-weighted residual
(DWR) method. We consider both single and multiple goal functionals. Using a saturation …

Convergence of adaptive stochastic Galerkin FEM

A Bespalov, D Praetorius, L Rocchi, M Ruggeri - SIAM Journal on Numerical …, 2019 - SIAM
We propose and analyze novel adaptive algorithms for the numerical solution of elliptic
partial differential equations with parametric uncertainty. Four different marking strategies …

Reliability and efficiency of DWR-type a posteriori error estimates with smart sensitivity weight recovering

B Endtmayer, U Langer, T Wick - Computational Methods in Applied …, 2021 - degruyter.com
We derive efficient and reliable goal-oriented error estimations, and devise adaptive mesh
procedures for the finite element method that are based on the localization of a posteriori …

A painless automatic hp-adaptive strategy for elliptic problems

V Darrigrand, D Pardo, T Chaumont-Frelet… - Finite Elements in …, 2020 - Elsevier
In this work, we introduce a novel hp-adaptive strategy. The main goal is to minimize the
complexity and implementational efforts hence increasing the robustness of the algorithm …

Two-level a posteriori error estimation for adaptive multilevel stochastic Galerkin finite element method

A Bespalov, D Praetorius, M Ruggeri - SIAM/ASA Journal on Uncertainty …, 2021 - SIAM
The paper considers a class of parametric elliptic partial differential equations (PDEs),
where the coefficients and the right-hand side function depend on infinitely many (uncertain) …

Continuum damage dynamic model combined with transient elastic equation and heat conduction equation to solve RPV stress

W Chen, S Dai, B Zheng - Fractal and Fractional, 2022 - mdpi.com
The development of the world cannot be separated from energy: the energy crisis has
become a major challenge in this era, and nuclear energy has been applied to many fields …

A general finite element method: Extension of variational analysis for nonlinear heat conduction with temperature-dependent properties and boundary conditions, and …

X Yao, Y Wang, J Leng - Computers & Mathematics with Applications, 2021 - Elsevier
In simulation of heat conduction with temperature-independent physical properties and
boundary conditions (BCs), Galerkin residual analysis and variational analysis yield …

Instance-optimal goal-oriented adaptivity

M Innerberger, D Praetorius - Computational Methods in Applied …, 2021 - degruyter.com
We consider an adaptive finite element method with arbitrary but fixed polynomial degree
p≥ 1, where adaptivity is driven by an edge-based residual error estimator. Based on the …