Ulrich Langer

According to our database, Ulrich Langer authored at least 66 papers between 1991 and 2024.

Collaborative distances:

• Dijkstra number of four.
• Erdős number of four.

2024

Robust space-time finite element methods for parabolic distributed optimal control problems with energy regularization.

Ulrich Langer, Olaf Steinbach, Huidong Yang

Adv. Comput. Math., April, 2024

2023

Robust Finite Element Discretization and Solvers for Distributed Elliptic Optimal Control Problems.

Ulrich Langer, Richard Löscher, Olaf Steinbach, Huidong Yang

Comput. Methods Appl. Math., October, 2023

Recent Advances in Boundary Element Methods.

Ulrich Langer, Olaf Steinbach

Comput. Methods Appl. Math., April, 2023

Parallel iterative solvers for discretized reduced optimality systems.

Ulrich Langer, Richard Löscher, Olaf Steinbach, Huidong Yang

CoRR, 2023

Goal-Oriented Adaptive Space-Time Finite Element Methods for Regularized Parabolic p-Laplace Problems.

Bernhard Endtmayer, Ulrich Langer, Andreas Schafelner

CoRR, 2023

Mass-lumping discretization and solvers for distributed elliptic optimal control problems.

Ulrich Langer, Richard Löscher, Olaf Steinbach, Huidong Yang

CoRR, 2023

2022

Adaptive space-time finite element methods for parabolic optimal control problems.

Ulrich Langer, Andreas Schafelner

J. Num. Math., 2022

An adaptive finite element method for distributed elliptic optimal control problems with variable energy regularization.

Ulrich Langer, Richard Löscher, Olaf Steinbach, Huidong Yang

CoRR, 2022

Robust space-time finite element error estimates for parabolic distributed optimal control problems with energy regularization.

Ulrich Langer, Olaf Steinbach, Huidong Yang

CoRR, 2022

Matrix-free Monolithic Multigrid Methods for Stokes and Generalized Stokes Problems.

Daniel Jodlbauer, Ulrich Langer, Thomas Wick, Walter Zulehner

CoRR, 2022

Robust Discretization and Solvers for Elliptic Optimal Control Problems with Energy Regularization.

Ulrich Langer, Olaf Steinbach, Huidong Yang

Comput. Methods Appl. Math., 2022

2021

Efficient Direct Space-Time Finite Element Solvers for Parabolic Initial-Boundary Value Problems in Anisotropic Sobolev Spaces.

Ulrich Langer, Marco Zank

SIAM J. Sci. Comput., 2021

Unstructured Space-Time Finite Element Methods for Optimal Control of Parabolic Equations.

Ulrich Langer, Olaf Steinbach, Fredi Tröltzsch, Huidong Yang

SIAM J. Sci. Comput., 2021

Space-Time Finite Element Discretization of Parabolic Optimal Control Problems with Energy Regularization.

Ulrich Langer, Olaf Steinbach, Fredi Tröltzsch, Huidong Yang

SIAM J. Numer. Anal., 2021

Space-time finite element methods for the initial temperature reconstruction.

Ulrich Langer, Olaf Steinbach, Fredi Tröltzsch, Huidong Yang

CoRR, 2021

Space-time hexahedral finite element methods for parabolic evolution problems.

Ulrich Langer, Andreas Schafelner

CoRR, 2021

Reliability and Efficiency of DWR-Type A Posteriori Error Estimates with Smart Sensitivity Weight Recovering.

Bernhard Endtmayer, Ulrich Langer, Thomas Wick

Comput. Methods Appl. Math., 2021

Simultaneous Space-Time Finite Element Methods for Parabolic Optimal Control Problems.

Ulrich Langer, Andreas Schafelner

Proceedings of the Large-Scale Scientific Computing - 13th International Conference, 2021

2020

Two-Side a Posteriori Error Estimates for the Dual-Weighted Residual Method.

Bernhard Endtmayer, Ulrich Langer, Thomas Wick

SIAM J. Sci. Comput., 2020

Parallel matrix-free higher-order finite element solvers for phase-field fracture problems.

Daniel Jodlbauer, Ulrich Langer, Thomas Wick

CoRR, 2020

Unstructured Space-Time Finite Element Methods for Optimal Sparse Control of Parabolic Equations.

Ulrich Langer, Olaf Steinbach, Fredi Tröltzsch, Huidong Yang

CoRR, 2020

Adaptive Space-Time Finite Element Methods for Non-autonomous Parabolic Problems with Distributional Sources.

Ulrich Langer, Andreas Schafelner

Comput. Methods Appl. Math., 2020

Multigoal-oriented optimal control problems with nonlinear PDE constraints.

Bernhard Endtmayer, Ulrich Langer, Ira Neitzel, Thomas Wick, Winnifried Wollner

Comput. Math. Appl., 2020

2019

Isogeometric analysis on non-matching segmentation: discontinuous Galerkin techniques and efficient solvers.

Christoph Hofer, Ulrich Langer, Ioannis Toulopoulos

J. Appl. Math. Comput., October, 2019

Parallel and Robust Preconditioning for Space-Time Isogeometric Analysis of Parabolic Evolution Problems.

Christoph Hofer, Ulrich Langer, Martin Neumüller, Rainer Schneckenleitner

SIAM J. Sci. Comput., 2019

Multigoal-oriented error estimates for non-linear problems.

Bernhard Endtmayer, Ulrich Langer, Thomas Wick

J. Num. Math., 2019

Hierarchical DWR Error Estimates for the Navier Stokes Equation: h and p Enrichment.

Bernhard Endtmayer, Ulrich Langer, Jan Philipp Thiele, Thomas Wick

CoRR, 2019

Guaranteed error bounds and local indicators for adaptive solvers using stabilised space-time IgA approximations to parabolic problems.

Ulrich Langer, Svetlana Matculevich, Sergey I. Repin

Comput. Math. Appl., 2019

Space-Time Finite Element Methods for Parabolic Initial-Boundary Value Problems with Non-smooth Solutions.

Ulrich Langer, Andreas Schafelner

Proceedings of the Large-Scale Scientific Computing - 12th International Conference, 2019

Hierarchical DWR Error Estimates for the Navier-Stokes Equations: h and p Enrichment.

Bernhard Endtmayer, Ulrich Langer, Jan Philipp Thiele, Thomas Wick

Proceedings of the Numerical Mathematics and Advanced Applications ENUMATH 2019 - European Conference, Egmond aan Zee, The Netherlands, September 30, 2019

2018

Numerical simulation of fluid-structure interaction problems with hyperelastic models: A monolithic approach.

Ulrich Langer, Huidong Yang

Math. Comput. Simul., 2018

2017

Guaranteed error control bounds for the stabilised space-time IgA approximations to parabolic problems.

Ulrich Langer, Svetlana Matculevich, Sergey I. Repin

CoRR, 2017

Multipatch Space-Time Isogeometric Analysis of Parabolic Diffusion Problems.

Ulrich Langer, Martin Neumüller, Ioannis Toulopoulos

Proceedings of the Large-Scale Scientific Computing - 11th International Conference, 2017

Functional Type Error Control for Stabilised Space-Time IgA Approximations to Parabolic Problems.

Ulrich Langer, Svetlana Matculevich, Sergey I. Repin

Proceedings of the Large-Scale Scientific Computing - 11th International Conference, 2017

2016

Discontinuous Galerkin Isogeometric Analysis of Elliptic Diffusion Problems on Segmentations with Gaps.

Christoph Hofer, Ulrich Langer, Ioannis Toulopoulos

SIAM J. Sci. Comput., 2016

2015

Shape Optimization of an Electric Motor Subject to Nonlinear Magnetostatics.

Peter Gangl, Ulrich Langer, Antoine Laurain, Houcine Meftahi, Kevin Sturm

SIAM J. Sci. Comput., 2015

Partitioned solution algorithms for fluid-structure interaction problems with hyperelastic models.

Ulrich Langer, Huidong Yang

J. Comput. Appl. Math., 2015

Analysis of multipatch discontinuous Galerkin IgA approximations to elliptic boundary value problems.

Ulrich Langer, Ioannis Toulopoulos

Comput. Vis. Sci., 2015

Functional A Posteriori Error Estimates for Parabolic Time-Periodic Boundary Value Problems.

Ulrich Langer, Sergey I. Repin, Monika Wolfmayr

Comput. Methods Appl. Math., 2015

Mesh grading in isogeometric analysis.

Ulrich Langer, Angelos Mantzaflaris, Stephen Edward Moore, Ioannis Toulopoulos

Comput. Math. Appl., 2015

Algebraic Multigrid Based Preconditioners for Fluid-Structure Interaction and Its Related Sub-problems.

Ulrich Langer, Huidong Yang

Proceedings of the Large-Scale Scientific Computing - 10th International Conference, 2015

Dirichlet-Dirichlet Domain Decomposition Methods for Elliptic Problems - <i>h</i> and <i>hp</i> Finite Element Discretizations

Vadim Glebovich Korneev, Ulrich Langer

WorldScientific, ISBN: 9789814578479, 2015

2014

Matrix Generation in Isogeometric Analysis by Low Rank Tensor Approximation.

Angelos Mantzaflaris, Bert Jüttler, Boris N. Khoromskij, Ulrich Langer

Proceedings of the Curves and Surfaces, 2014

2013

A Robust FEM-BEM Solver for Time-Harmonic Eddy Current Problems.

Michael Kolmbauer, Ulrich Langer

Proceedings of the Domain Decomposition Methods in Science and Engineering XX, 2013

Multiharmonic finite element analysis of a time-periodic parabolic optimal control problem.

Ulrich Langer, Monika Wolfmayr

J. Num. Math., 2013

A Robust Preconditioned MinRes Solver for Time-periodic Eddy Current Problems.

Michael Kolmbauer, Ulrich Langer

Comput. Methods Appl. Math., 2013

A robust finite element solver for a multiharmonic parabolic optimal control problem.

Markus Kollmann, Michael Kolmbauer, Ulrich Langer, Monika Wolfmayr, Walter Zulehner

Comput. Math. Appl., 2013

2012

A Robust Preconditioned MinRes Solver for Distributed Time-Periodic Eddy Current Optimal Control Problems.

Michael Kolmbauer, Ulrich Langer

SIAM J. Sci. Comput., 2012

Topology optimization of electric machines based on topological sensitivity analysis.

Peter Gangl, Ulrich Langer

Comput. Vis. Sci., 2012

Editorial.

Vadim G. Korneev, Yuri Kuznetsov, Ulrich Langer, Aleksandr M. Matsokin

Comput. Methods Appl. Math., 2012

2011

A Non-standard Finite Element Method Based on Boundary Integral Operators.

Clemens Hofreither, Ulrich Langer, Clemens Pechstein

Proceedings of the Large-Scale Scientific Computing - 8th International Conference, 2011

2010

Domain decomposition solvers for nonlinear multiharmonic finite element equations.

Dylan M. Copeland, Ulrich Langer

J. Num. Math., 2010

2009

Boundary Element Simulation of Linear Water Waves in a Model Basin.

Clemens Hofreither, Ulrich Langer, Satyendra K. Tomar

Proceedings of the Large-Scale Scientific Computing, 7th International Conference, 2009

2008

Primal and Dual Interface Concentrated Iterative Substructuring Methods.

Sven Beuchler, Tino Eibner, Ulrich Langer

SIAM J. Numer. Anal., 2008

2007

Inexact Data-Sparse Boundary Element Tearing and Interconnecting Methods.

Ulrich Langer, Günther Of, Olaf Steinbach, Walter Zulehner

SIAM J. Sci. Comput., 2007

GStokes: A Grid-enabled Solver for the 3D Stokes/Navier-Stokes System on Hybrid Meshes.

Ulrich Langer, Walter Zulehner, Huidong Yang, Markus Baumgartner

Proceedings of the 6th International Symposium on Parallel and Distributed Computing (ISPDC 2007), 2007

A robust PDE solver for the 3D Stokes/Navier-Stokes systems on the grid environment.

Huidong Yang, Walter Zulehner, Ulrich Langer, Markus Baumgartner

Proceedings of the 8th IEEE/ACM International Conference on Grid Computing (GRID 2007), 2007

2005

Numerical analysis of nonlinear multiharmonic eddy current problems.

Florian Bachinger, Ulrich Langer, Joachim Schöberl

Numerische Mathematik, 2005

Comparison of Geometrical and Algebraic Multigrid Preconditioners for Data-Sparse Boundary Element Matrices.

Ulrich Langer, D. Pusch

Proceedings of the Large-Scale Scientific Computing, 5th International Conference, 2005

2003

Boundary Element Tearing and Interconnecting Methods.

Ulrich Langer, Olaf Steinbach

Computing, 2003

2001

Parallel multigrid 3D Maxwell solvers.

Gundolf Haase, Michael Kuhn, Ulrich Langer

Parallel Comput., 2001

Algebraic multigrid methods based on element preconditioning.

Gundolf Haase, Ulrich Langer, Stefan Reitzinger, Joachim Schöberl

Int. J. Comput. Math., 2001

Symbolic Methods for the Element Preconditioning Technique.

Ulrich Langer, Stefan Reitzinger, Josef Schicho

Proceedings of the Symbolic and Numerical Scientific Computation, 2001

1997

Editorial.

Ulrich Langer

Numer. Linear Algebra Appl., 1997

1991

The approximate Dirichlet Domain Decomposition method. Part II: Applications to 2nd-order Elliptic B.V.P.s.

Gundolf Haase, Ulrich Langer, Arnd Meyer

Computing, 1991

The approximate Dirichlet Domain Decomposition method. Part I: An algebraic approach.

Gundolf Haase, Ulrich Langer, Arnd Meyer

Computing, 1991