Schuster, Michael ; Strauch, Elisa ; Gugat, Martin ; Lang, Jens (2022)
Probabilistic constrained optimization on flow networks.
In: Optimization and Engineering, 23 (2)
doi: 10.1007/s11081-021-09619-x
Artikel, Bibliographie

Lang, Jens ; Domschke, Pia ; Strauch, Elisa
Hrsg.: Sevilla, Rubén ; Perotto, Simona ; Morgan, Kenneth (2022)
Adaptive Single- and Multilevel Stochastic Collocation Methods for Uncertain Gas Transport in Large-Scale Networks.
In: Mesh Generation and Adaptation
doi: 10.1007/978-3-030-92540-6_6
Buchkapitel, Bibliographie

Lang, Jens ; Schmitt, Bernhard A. (2022)
Implicit A-Stable Peer Triplets for ODE Constrained Optimal Control Problems.
In: Algorithms, 15 (9)
doi: 10.3390/a15090310
Artikel, Bibliographie

Steinbach, Philipp ; Schulte, Daniel Otto ; Welsch, Bastian ; Sass, Ingo ; Lang, Jens (2021)
Quantification of bore path uncertainty in borehole heat exchanger arrays using adaptive anisotropic stochastic collocation.
In: Geothermics, 97
doi: 10.1016/j.geothermics.2021.102194
Artikel, Bibliographie

Ullmann, Sebastian ; Müller, Christopher ; Lang, Jens (2021)
Stochastic Galerkin Reduced Basis Methods for Parametrized Linear Convection−Diffusion−Reaction Equations.
In: Fluids, 6 (8)
doi: 10.3390/fluids6080263
Artikel, Bibliographie

Sun, Zhen ; Braack, Malte ; Lang, Jens (2020)
An adaptive moving finite element method for steady low Mach number compressible combustion problems.
In: International Journal for Numerical Methods in Fluids, 92 (9)
doi: 10.1002/fld.4818
Artikel, Bibliographie

Weber, Marie-Christin ; Fischer, Lisa ; Damerau, Alexandra ; Ponomarev, Igor ; Pfeiffenberger, Moritz ; Gaber, Timo ; Götschel, Sebastian ; Lang, Jens ; Röblitz, Susanna ; Buttgereit, Frank ; Ehrig, Rainald ; Lang, Annemarie (2020)
Macroscale mesenchymal condensation to study cytokine-driven cellular and matrix-related changes during cartilage degradation.
In: Biofabrication, 12 (4)
doi: 10.1088/1758-5090/aba08f
Artikel, Bibliographie

Gräßle, Carmen ; Hinze, Michael ; Lang, Jens ; Ullmann, Sebastian (2019)
POD model order reduction with space-adapted snapshots for incompressible flows.
In: Advances in Computational Mathematics, 45
doi: 10.1007/s10444-019-09716-7
Artikel, Bibliographie

Müller, Christopher ; Ullmann, Sebastian ; Lang, Jens (2019)
A Bramble--Pasciak Conjugate Gradient Method for Discrete Stokes Equations with Random Viscosity.
In: SIAM/ASA Journal on Uncertainty Quantification, 7 (3)
doi: 10.1137/18m1163920
Artikel, Bibliographie

Ullmann, Sebastian ; Lang, Jens (2018)
Stochastic Galerkin reduced basis methods for parametrized linear elliptic PDEs.
In: SIAM / ASA Journal on Uncertainty Quantification, (submitted)
Artikel, Bibliographie

Mindt, Pascal ; Lang, Jens ; Domschke, Pia (2018)
Entropy-Preserving Coupling of Hierarchical Gas Models.
doi: 10.48550/arXiv.1812.05927
Report, Bibliographie

Müller, Christopher ; Ullmann, Sebastian ; Lang, Jens
Hrsg.: Schäfer, Michael ; Behr, Marek ; Mehl, Miriam ; Wohlmuth, Barbara (2018)
A Bramble-Pasciak conjugate gradient method for discrete Stokes problems with lognormal random viscosity.
In: Recent Advances in Computational Engineering
doi: 10.1007/978-3-319-93891-2_5
Buchkapitel, Bibliographie

Spannring, Christopher ; Ullmann, Sebastian ; Lang, Jens
Hrsg.: Schäfer, Michael ; Behr, Marek ; Mehl, Miriam ; Wohlmuth, Barbara (2018)
A weighted reduced basis method for parabolic PDEs with random data.
In: Recent Advances in Computational Engineering
doi: 10.1007/978-3-319-93891-2_9
Buchkapitel, Bibliographie

Müller, Christopher ; Ullmann, Sebastian ; Lang, Jens (2018)
A Bramble-Pasciak conjugate gradient method for discrete Stokes equations with random viscosity.
In: SIAM/ASA Journal on Uncertainty Quantification (JUQ), 7 (3)
Artikel, Bibliographie

Domschke, Pia ; Dua, Aseem ; Stolwijk, Jeroen J. ; Lang, Jens ; Mehrmann, Volker (2018)
Adaptive refinement strategies for the simulation of gas flow in networks using a model hierarchy.
In: Electronic Transactions on Numerical Analysis, 48
doi: 10.1553/etna_vol48s97
Artikel, Bibliographie

Lang, Jens ; Mindt, Pascal (2018)
Entropy-preserving coupling conditions for one-dimensional Euler systems at junctions.
In: Networks & Heterogeneous Media, 13 (1)
doi: 10.3934/nhm.2018008
Artikel, Bibliographie

Schneider, Moritz ; Lang, Jens ; Hundsdorfer, Willem (2018)
Extrapolation-based super-convergent implicit-explicit Peer methods with A-stable implicit part.
In: Journal of Computational Physics, 367
doi: 10.1016/j.jcp.2018.04.006
Artikel, Bibliographie

Müller, Christopher ; Ullmann, Sebastian ; Lang, Jens (2017)
Conjugate gradient methods for stochastic Galerkin finite element matrices with saddle point structure.
Quantification of Uncertainty: Improving Efficiency and Technology (QUIET). Triest, Italy (18.07.2017-21.07.2017)
Konferenzveröffentlichung, Bibliographie

Spannring, Christopher ; Ullmann, Sebastian ; Lang, Jens (2017)
Reduced Basis Method for Linear Parabolic Problems with Random Data.
FoMICS-Workshop. Lugano, Switzerland (15.12.2016-19.12.2016)
Konferenzveröffentlichung, Bibliographie

Spannring, Christopher ; Ullmann, Sebastian ; Lang, Jens (2017)
Reduced Basis Method for Parabolic Problems with Random Data.
SIMAI (Societa Italiana Di Matematica Applicata E Industriale) 2016. Milano, Italy (13.09.2016-16.09.2016)
Konferenzveröffentlichung, Bibliographie

Spannring, Christopher ; Ullmann, Sebastian ; Lang, Jens (2017)
Weighted Reduced Basis Method for Parabolic PDEs with Random Data.
Quantification of Uncertainty: Improving Efficiency and Technology (QUIET). Triest, Italy (18.07.2017-21.07.2017)
Konferenzveröffentlichung, Bibliographie

Lang, Jens ; Hundsdorfer, Willem (2017)
Extrapolation-based implicit–explicit Peer methods with optimised stability regions.
In: Journal of Computational Physics, 337
doi: 10.1016/j.jcp.2017.02.034
Artikel, Bibliographie

Domschke, Pia ; Hiller, Benjamin ; Lang, Jens ; Tischendorf, Caren (2017)
Modellierung von Gasnetzwerken: Eine Übersicht.
Report, Bibliographie

Spannring, Christopher ; Ullmann, Sebastian ; Lang, Jens (2017)
A Weighted Reduced Basis Method for Parabolic PDE with Random Data.
Reduced Basis Summer School 2017. Goslar, Germany (19.09.2017-22.09.2017)
Konferenzveröffentlichung, Bibliographie

Spannring, Christopher ; Ullmann, Sebastian ; Lang, Jens (2017)
A Weighted Reduced Basis Method for Parabolic PDE with Random Data.
4th International Conference on Computational Engineering (ICCE 2017). Darmstadt, Germany (28.09.2017-29.09.2017)
Konferenzveröffentlichung, Bibliographie

Spannring, Christopher ; Ullmann, Sebastian ; Lang, Jens (2017)
A Weighted Reduced Basis Method for Parabolic PDEs with Random Data.
SIAM Conference on Uncertainty Quantification, Garden Grove 2018. Garden Grove, California, USA (16.04.2017-19.04.2017)
Konferenzveröffentlichung, Bibliographie

Domschke, Pia ; Kolb, Oliver ; Lang, Jens (2016)
Adaptive Modelling, Simulation and Optimization of Gas and Water Supply Networks.
In: PAMM, 16 (1)
doi: 10.1002/pamm.201610408
Artikel, Bibliographie

Ullmann, Sebastian ; Rotkvic, Marko ; Lang, Jens (2016)
POD-Galerkin reduced-order modeling with adaptive finite element snapshots.
In: Journal of Computational Physics, 325
Artikel, Bibliographie

Spannring, Christopher ; Ullmann, Sebastian ; Lang, Jens (2016)
Reduced Basis Method for Parabolic Problems with Random Data.
Reduced Basis Summer School 2016. Hedersleben, Germany (04.10.2016-07.10.2016)
Konferenzveröffentlichung, Bibliographie

Huang, Weizhang ; Kamenski, Lennard ; Lang, Jens (2016)
STABILITY OF EXPLICIT ONE-STEP METHODS FOR P1-FINITE ELEMENT APPROXIMATION OF LINEAR DIFFUSION EQUATIONS ON ANISOTROPIC MESHES.
In: Siam Journal on Numerical Analysis, 54 (3)
Artikel, Bibliographie

Domschke, Pia ; Kolb, Oliver ; Lang, Jens (2015)
Adjoint-based error control for the simulation and optimization of gas and water supply networks.
In: Applied Mathematics and Computation, 259
doi: 10.1016/j.amc.2015.03.029
Artikel, Bibliographie

Debrabant, Kristian ; Lang, Jens (2015)
On asymptotic global error estimation and control of finite difference solutions for semilinear parabolic equations.
In: Computer Methods in Applied Mechanics and Engineering, 288
Artikel, Bibliographie

Liu, Shengyuan ; Gerisch, Alf ; Rahimi, Mohammad ; Lang, Jens ; Boehm, Michael C. ; Mueller-Plathe, Florian (2015)
Robustness of a new molecular dynamics-finite element coupling approach for soft matter systems analyzed by uncertainty quantification.
In: Journal of Chemical Physics, 142 (10)
Artikel, Bibliographie

Kuhn, Karen ; Lang, Jens (2014)
Comparison of the asymptotic stability for multirate Rosenbrock methods.
In: Journal of Computational and Applied Mathematics, 262
Artikel, Bibliographie

Schroeder, Dirk ; Lang, Jens ; Weiner, Ruediger (2014)
Stability and consistency of discrete adjoint implicit peer methods.
In: Journal of Computational and Applied Mathematics, 262
Artikel, Bibliographie

Clever, Debora ; Lang, Jens ; Schröder, Dirk (2014)
Model hierarchy-based optimal control of radiative heat transfer.
In: International Journal of Computational Science and Engineering, 9 (5/6)
doi: 10.1504/IJCSE.2014.064536
Artikel, Bibliographie

Bott, Stefanie ; Clever, Debora ; Lang, Jens ; Ulbrich, Stefan ; Ziems, Jan ; Schröder, D.
Hrsg.: Leugering, G. ; Benner, P. ; Engell, S. ; Griewank, A. ; Harbrecht, H. ; Hinze, Michael ; Rannacher, R. ; Ulbrich, Stefan (2014)
On a Fully Adaptive SQP Method for PDAE-Constrained Optimal Control Problems with Control and State Constraints.
In: Trends in PDE Constrained Optimization
Buchkapitel, Bibliographie

Ullmann, Sebastian ; Lang, Jens
Hrsg.: Garcke, J. ; Pflüger, D. (2014)
POD-Galerkin Modeling and Sparse-Grid Collocation for a Natural Convection Problem with Stochastic Boundary Conditions.
In: Sparse Grids and Applications - Munich 2012
Buchkapitel, Bibliographie

Liersch, Claudia ; Frankenbach, Matthias ; Froehlich, Jochen ; Lang, Jens (2014)
Recent progress in designing moving meshes for complex turbulent flows.
In: Meteorologische Zeitschrift, 23 (4)
Artikel, Bibliographie

Hertel, Claudia ; Schuemichen, Michel ; Lang, Jens ; Froehlich, Jochen (2013)
Using a Moving Mesh PDE for Cell Centres to Adapt a Finite Volume Grid.
In: Flow Turbulence and Combustion, 90
Artikel, Bibliographie

Braack, Malte ; Lang, Jens ; Taschenberger, Nico (2013)
Stabilized finite elements for transient flow problems on varying spatial meshes.
In: Computer Methods in Applied Mechanics and Engineering, 253
Artikel, Bibliographie

Ullmann, Sebastian ; Löbig, Stefan ; Lang, Jens
Hrsg.: Janicka, J. ; Sadiki, Amsini ; Schäfer, Michael ; Heeger, Christof (2013)
Adaptive Large Eddy Simulation and Reduced-Order Modeling.
In: Flow and Combustion in Advanced Gas Turbine Combustors
doi: 10.1007/978-94-007-5320-4_12
Buchkapitel, Bibliographie

Ullmann, Sebastian ; Lang, Jens (2012)
POD and CVT Galerkin reduced-order modeling of the flow around a cylinder.
In: Proceedings in Applied Mathematics and Mechanics (PAMM), 12 (1)
Artikel, Bibliographie

Clever, Debora ; Lang, Jens ; Ulbrich, Stefan ; Ziems, Jan
Hrsg.: Leugering, Guenter (2012)
Generalized Multilevel SQP- methods for PDAE-constrained Optimization Based on Space-Time Adaptive PDAE Solvers.
In: Constrained Optimization and Optimal Control for Partial Differential Equations
Buchkapitel, Bibliographie

Geissler, Bjoern ; Kolb, Oliver ; Lang, Jens ; Leugering, Guenter ; Martin, Alexander ; Morsi, Antonio (2011)
Mixed integer linear models for the optimization of dynamical transport networks.
In: Mathematical Methods of Operations Research, 73
Artikel, Bibliographie

Frank, Martin ; Lang, Jens ; Schäfer, Matthias (2011)
Adaptive Finite Element Simulation of the Time-dependent Simplified P N Equations.
In: Journal of Scientific Computing
doi: 10.1007/s10915-011-9466-6
Artikel, Bibliographie

Domschke, Pia ; Kolb, Oliver ; Lang, Jens
Hrsg.: Yang, X.-S. ; Koziel, S. (2011)
Adjoint-Based Control of Model and Discretization Errors for Gas and Water Supply Networks.
In: Computational Optimization and Applications in Engineering and Industry
doi: 10.1007/978-3-642-20986-4_1
Buchkapitel, Bibliographie

Domschke, Pia ; Kolb, Oliver ; Lang, Jens
Hrsg.: Aubry, D. ; Diéz, P. ; Tie, B. ; Parés, N. (2011)
Adjoint-Based Error Control for the Simulation of Gas and Water Supply Networks.
In: Adaptive Modeling and Simulation 2011
Buchkapitel, Bibliographie

Domschke, Pia ; Kolb, Oliver ; Lang, Jens (2011)
Adjoint-based control of model and discretisation errors for gas flow in networks.
In: International Journal of Mathematical Modelling and Numerical Optimisation, 2 (2)
doi: 10.1504/IJMMNO.2011.039427
Artikel, Bibliographie

Lang, Jens ; Lilienthal, Martin ; Schnepp, Sascha (2011)
Effizienz durch adaptive Simulationsverfahren.
In: forschen, Wissenschaftsmagazin der Technischen Universität Darmstadt
Artikel, Bibliographie

Domschke, Pia ; Geissler, Björn ; Kolb, Oliver ; Lang, Jens ; Martin, Alexander ; Morsi, Antonio (2010)
Combination of Nonlinear and Linear Optimization of Transient Gas Networks.
In: INFORMS Journal on Computing
doi: 10.1287/ijoc.1100.0429
Artikel, Bibliographie

Clever, Debora ; Lang, Jens ; Ulbrich, Stefan ; Ziems, Jan (2010)
Combination of an Adaptive Multilevel SQP Method and a Space-Time Adaptive PDAE Solver for Optimal Control Problems.
Procedia Computer Science.
Konferenzveröffentlichung, Bibliographie

Kolb, Oliver ; Domschke, Pia ; Lang, Jens (2010)
Modified QR decomposition to avoid non-uniqueness in water supply networks with extension to adjoint calculus.
In: Procedia Computer Science, 1 (1)
doi: 10.1016/j.procs.2010.04.158
Artikel, Bibliographie

Kolb, Oliver ; Domschke, Pia ; Lang, Jens
Hrsg.: Fitt, Alistair D. ; Norbury, John ; Ockendon, Hilary ; Wilson, Eddie (2010)
Moving Penalty Functions for Optimal Control with PDEs on Networks.
In: Progress in Industrial Mathematics at ECMI 2008
doi: 10.1007/978-3-642-12110-4_148
Buchkapitel, Bibliographie

Ullmann, Sebastian ; Lang, Jens
A POD-Galerkin Reduced Model with Updated Coefficients for Smagorinsky LES.
In: Proceedings of the V European Conference on Computational Fluid Dynamics ECCOMAS CFD 2010
Artikel, Bibliographie

Domschke, Pia ; Kolb, Oliver ; Lang, Jens (2010)
An adaptive model switching and discretization algorithm for gas flow on networks.
In: Procedia Computer Science, 1 (1)
doi: 10.1016/j.procs.2010.04.148
Artikel, Bibliographie

Kolb, Oliver ; Lang, Jens ; Bales, Pia (2010)
An implicit box scheme for subsonic compressible flow with dissipative source term.
In: Numerical Algorithms, 53 (2-3)
doi: 10.1007/s11075-009-9287-y
Artikel, Bibliographie

Huang, Weizhang ; Kamenski, Lennard ; Lang, Jens (2010)
A new anisotropic mesh adaptation method based upon hierarchical a posteriori error estimates.
In: Journal of Computational Physics, 229 (6)
doi: 10.1016/j.jcp.2009.11.029
Artikel, Bibliographie

Bales, Pia ; Kolb, Oliver ; Lang, Jens
Hrsg.: Allen, G. ; Nabrzyski, J. ; Seidel, E. ; Albada, G. D. van ; Dongarra, J. ; Sloot, P. M. A. (2009)
Hierarchical modelling and model adaptivity for gas flow on networks.
In: Computational Science — ICCS 2009
doi: 10.1007/978-3-642-01970-8_33
Buchkapitel, Bibliographie

Wimmer, G. ; Clemens, M. ; Lang, Jens (2008)
Calculation of magnetic fields with finite elements.
In: From nano to space : applied mathematics inspired by Roland Bulirsch
Buchkapitel, Bibliographie

Kolb, Oliver ; Lang, Jens ; Bales, Pia (2007)
Adaptive linearized models for optimization of gas networks.
Konferenzveröffentlichung, Bibliographie

Lang, Jens ; Debrabant, Kristian ; Verwer, Jan (2007)
On global error control for parabolic PDEs.
In: Oberwolfach reports, 4
Artikel, Bibliographie

Lang, Jens ; Verwer, J. (2007)
On global error estimation and control for initial value problems.
In: SIAM Journal on Scientific Computing, 29
Artikel, Bibliographie

Teleaga, Ioan ; Lang, Jens (2005)
Towards the description of modelling and numerical errors in LES.
Konferenzveröffentlichung, Bibliographie

Lang, Jens ; Cao, Weiming ; Huang, Weizhang ; Russell, Robert (2002)
D. a two-dimensional moving finite element method with local refinement based on a posteriori error estimates.
Buch, Bibliographie