The high-order shifted boundary method and its analysis

NM Atallah, C Canuto, G Scovazzi - Computer Methods in Applied …, 2022 - Elsevier
Abstract The Shifted Boundary Method (SBM) is an approximate domain method for
boundary value problems, in the broader class of unfitted/embedded/immersed methods …

An unfitted interface penalty finite element method for elliptic interface problems

P Huang, H Wu, Y **ao - Computer Methods in Applied Mechanics and …, 2017 - Elsevier
An unfitted interface penalty finite element method (UIPFEM) is proposed for the elliptic
interface problems, in which Nitsche's method together with the ideas of merging elements …

Isogeometric analysis on V-reps: first results

P Antolin, A Buffa, M Martinelli - Computer Methods in Applied Mechanics …, 2019 - Elsevier
Inspired by the introduction of Volumetric Modeling via volumetric representations (V-reps)
by Massarwi and Elber in 2016, in this paper we present a novel approach for the …

An unfitted hybrid high-order method for elliptic interface problems

E Burman, A Ern - SIAM Journal on Numerical Analysis, 2018 - SIAM
We design and analyze a hybrid high-order (HHO) method on unfitted meshes to
approximate elliptic interface problems. The curved interface can cut through the mesh cells …

Finite element discretization methods for velocity-pressure and stream function formulations of surface Stokes equations

P Brandner, T Jankuhn, S Praetorius, A Reusken… - SIAM Journal on …, 2022 - SIAM
In this paper we study parametric trace finite element (TraceFEM) and parametric surface
finite element (SFEM) discretizations of a surface Stokes problem. These methods are …

An unfitted hybrid high-order method with cell agglomeration for elliptic interface problems

E Burman, M Cicuttin, G Delay, A Ern - SIAM Journal on Scientific Computing, 2021 - SIAM
We design and analyze a Hybrid High-Order (HHO) method on unfitted meshes to
approximate elliptic interface problems by means of a consistent penalty method à la …

[PDF][PDF] Higher order unfitted isoparametric space-time FEM on moving domains

J Preuß - Master's thesis, University of Gottingen, 2018 - cpde.math.uni-goettingen.de
Solving partial differential equations (PDE) on evolving geometries is a challenging and
useful task. The geometry that has to be treated in applications is often quite complicated …

An unfitted hp-interface penalty finite element method for elliptic interface problems

H Wu, Y **ao - Journal of Computational Mathematics, 2019 - JSTOR
An hp version of interface penalty finite element method (hp-IPFEM) is proposed to solve the
elliptic interface problems in two and three dimensions on unfitted meshes. Error estimates …

High-order extended finite element methods for solving interface problems

Y **ao, J Xu, F Wang - Computer Methods in Applied Mechanics and …, 2020 - Elsevier
In this paper, we study arbitrary order extended finite element (XFE) methods based on two
discontinuous Galerkin (DG) schemes in order to solve elliptic interface problems in two and …

An arbitrarily high order unfitted finite element method for elliptic interface problems with automatic mesh generation

Z Chen, Y Liu - Journal of Computational Physics, 2023 - Elsevier
We consider the reliable implementation of high-order unfitted finite element methods on
Cartesian meshes with hanging nodes for elliptic interface problems. We construct a reliable …