Research Interests

Research Interests

$\bullet$ Numerical methods for partial differential equations
$\bullet$ Scoientific Computing
$\bullet$ High-Performance Computing
$\bullet$ Design and development of numerical software
$\bullet$ Cut-cell methods
$\bullet$ Numerical methods for surface PDEs and geometric PDEs
$\bullet$ Biomedical Applications

Current Cluster Publications

Current Cluster Publications of Prof. Dr. Christian Engwer

$\bullet $ Christian Engwer, Mario Ohlberger, and Lukas Renelt. Model order reduction of an ultraweak and optimally stable variational formulation for parametrized reactive transport problems. SIAM Journal on Scientific Computing, 46(5):A3205–A3229, October 2024. doi:10.1137/23m1613402.

$\bullet $ Tim Erdbrügger, Malte Höltershinken, Jan-Ole Radecke, Yvonne Buschermöhle, Fabrice Wallois, Sampsa Pursiainen, Joachim Gross, Rebekka Lencer, Christian Engwer, and Carsten Wolters. CutFEM-based MEG forward modeling improves source separability and sensitivity to quasi-radial sources: A somatosensory group study. Human Brain Mapping, 45(11):e26810, August 2024. doi:10.1002/hbm.26810.

$\bullet $ Christian Engwer, Mario Ohlberger, and Lukas Renelt. Construction of local reduced spaces for friedrichs' systems via randomized training. arXiv e-prints, April 2024. arXiv:2404.18839.

$\bullet $ Christian Engwer, Mario Ohlberger, and Lukas Renelt. Model order reduction of an ultraweak and optimally stable variational formulation for parametrized reactive transport problems. arXiv e-prints, October 2023. arXiv:2310.19674.

$\bullet $ Lukas Renelt, Christian Engwer, and Mario Ohlberger. An optimally stable approximation of reactive transport using discrete test and infinite trial spaces. In Emmanuel Franck, Jürgen Fuhrmann, Victor Michel-Dansac, and Laurent Navoret, editors, Finite Volumes for Complex Applications X—Volume 2, Hyperbolic and Related Problems, 289–298. Springer Nature Switzerland, October 2023. doi:10.1007/978-3-031-40860-1_30.

$\bullet $ Tim Erdbrügger, Andreas Westhoff, Malte Höltershinken, Jan-Ole Radecke, Yvonne Buschermöhle, Alena Buyx, Fabrice Wallois, Sampsa Pursiainen, Joachim Gross, Rebekka Lencer, Christian Engwer, and Carsten Wolters. CutFEM forward modeling for EEG source analysis. Frontiers in Human Neuroscience, August 2023. doi:10.3389/fnhum.2023.1216758.

$\bullet $ Takfarinas Medani, Juan Garcia-Prieto, Francois Tadel, Marios Antonakakis, Tim Erdbrügger, Malte Höltershinken, Wayne Mead, Sophie Schrader, Anand Joshi, Christian Engwer, Carsten H. Wolters, John C. Mosher, and Richard M. Leahy. Brainstorm-DUNEuro: An integrated and user-friendly finite element method for modeling electromagnetic brain activity. NeuroImage, 267:119851, February 2023. doi:10.1016/j.neuroimage.2022.119851.

$\bullet $ Gunnar Birke, Christian Engwer, Sandra May, and Florian Streitbürger. DoD stabilization of linear hyperbolic PDEs on general cut-cell meshes. arXiv e-prints, January 2023. arXiv:2301.02715.

$\bullet $ Florian Streitbürger, Gunnar Birke, Christian Engwer, and Sandra May. DoD stabilization for higher-order advection in two dimensions. arXiv e-prints, January 2023. arXiv:2301.02799.

$\bullet $ Gunnar Birke, Christian Engwer, Sandra May, and Florian Streitbürger. Domain of Dependence Stabilization for the Acoustic Wave Equation on 2D Cut-Cell Meshes, pages 53–61. Volume 433. Springer Nature Switzerland, 2023. doi:10.1007/978-3-031-40860-1_6.

$\bullet $ Tim Erdbrügger, Andreas Westhoff, Malte Hoeltershinken, Jan-Ole Radecke, Yvonne Buschermoehle, Alena Buyx, Fabrice Wallois, Sampsa Pursiainen, Joachim Gross, Rebekka Lencer, Christian Engwer, and Carsten Wolters. Cutfem forward modeling for EEG source analysis. arXiv e-prints, November 2022. arXiv:2211.17093.

$\bullet $ Nils-Arne Dreier and Christian Engwer. A hardware-aware and stable orthogonalization framework. arXiv e-prints, April 2022. arXiv:2204.13393.

$\bullet $ Nils-Arne Dreier and Christian Engwer. Strategies for the vectorized Block Conjugate Gradients method. In Numerical Mathematics and Advanced Applications ENUMATH 2019, Lecture Notes in Computational Science and Engineering, 381–388. August 2021. doi:10.1007/978-3-030-55874-1_37.

$\bullet $ Christian Engwer and Sebastian Westerheide. An unfitted dG scheme for coupled bulk-surface PDEs on complex geometries. Comp. Appl. Math., 21(3):569–591, July 2021. doi:10.1515/cmam-2020-0056.

$\bullet $ Alexander Grebhahn, Christian Kaltenecker, Christian Engwer, Norbert Siegmund, and Sven Apel. Lightweight, semi-automatic variability extraction: A case study on scientific computing. Empir. Softw. Eng., 26(2):23, February 2021. doi:10.1007/s10664-020-09922-8.

$\bullet $ Takfarinas Medani, Juan Garcia-Prieto, Francois Tadel, Sophie Schrader, Marios Antonakakis, Anand Joshi, Christian Engwer, Carsten H. Wolters, John C. Mosher, and Richard M. Leahy. Realistic head modeling of electromagnetic brain activity: an integrated Brainstorm-DUNEuro pipeline from MRI data to the FEM solutions. In Hilde Bosmans, Wei Zhao, and Lifeng Yu, editors, Medical Imaging 2021: Physics of Medical Imaging, volume 11595, 1321 – 1328. International Society for Optics and Photonics, February 2021. doi:10.1117/12.2580935.

$\bullet $ Christian Engwer and Michael Wenske. Estimating the extent of glioblastoma invasion. J. Math. Biol., 82(1):10, January 2021. doi:10.1007/s00285-021-01563-9.

$\bullet $ Mirco Altenbernd, Nils-Arne Dreier, Christian Engwer, and Dominik Göddeke. Towards local-failure local-recovery in PDE frameworks: The case of linear solvers. In Tomáš Kozubek, Peter Arbenz, Jiří Jaroš, Lubomír Říha, Jakub Šístek, and Petr Tichý, editors, High Performance Computing in Science and Engineering, Lecture Notes in Computer Science, 17–38. Springer International Publishing, January 2021. doi:10.1007/978-3-030-67077-1_2.

$\bullet $ Gregor Corbin, Axel Klar, Christina Surulescu, Christian Engwer, Michael Wenske, Juanjo Nieto, and Juan Soler. Modeling glioma invasion with anisotropy-and hypoxia-triggered motility enhancement: From subcellular dynamics to macroscopic PDEs with multiple taxis. Math. Models Methods Appl. Sci., January 2021. doi:10.1142/S0218202521500056.

$\bullet $ Peter Bastian, Markus Blatt, Andreas Dedner, Nils-Arne Dreier, Christian Engwer, René Fritze, Carsten Gräser, Christoph Grüninger, Dominic Kempf, Robert Klöfkorn, Mario Ohlberger, and Oliver Sander. The DUNE framework: Basic concepts and recent developments. Computers and Mathematics with Applications, 81:75–112, January 2021. doi:10.1016/j.camwa.2020.06.007.

$\bullet $ Natalie Emken and Christian Engwer. A reaction–diffusion–advection model for the establishment and maintenance of transport-mediated polarity and symmetry breaking. Frontiers in Applied Mathematics and Statistics, November 2020. doi:10.3389/fams.2020.570036.

$\bullet $ Christian Engwer, Iuliu Sorin Pop, and Thomas Wick. Dynamic and weighted stabilizations of the $L$-scheme applied to a phase-field model for fracture propagation. In Numerical Mathematics and Advanced Applications ENUMATH 2019, Lecture Notes in Computational Science and Engineering, 1177–1184. Springer International Publishing, August 2020. arXiv:1912.07096, doi:10.1007/978-3-030-55874-1_117.

$\bullet $ Peter Bastian, Mirco Altenbernd, Nils-Arne Dreier, Christian Engwer, Jorrit Fahlke, René Fritze, Markus Geveler, Dominik Göddeke, Oleg Iliev, Olaf Ippisch, Jan Mohring, Steffen Müthing, Mario Ohlberger, Dirk Ribbrock, Nikolay Shegunov, and Stefan Turek. Exa-dune—flexible PDE solvers, numerical methods and applications. In Hans-Joachim Bungartz, Severin Reiz, Benjamin Uekermann, Philipp Neumann, and Wolfgang E. Nagel, editors, Software for Exascale Computing - SPPEXA 2016-2019, pages 225–269. Cham, July 2020. doi:10.1007/978-3-030-47956-5_9.

$\bullet $ Christian Engwer, Sandra May, Andreas Nüßing, and Florian Streitbürger. A stabilized DG cut cell method for discretizing the linear transport equation. SIAM J. Sci. Comp., 42(6):A3677–A3703, January 2020. doi:10.1137/19M1268318.

$\bullet $ Mario Ohlberger, Andreas Buhr, Dennis Eikhorn, Christian Engwer, and Stephan Rave. Advances in model order reduction for large scale or multi-scale problems. Oberwolfach Rep., 2019:38–40, September 2019.

$\bullet $ Christian Engwer, Patrick Henning, Axel Målqvist, and Daniel Peterseim. Efficient implementation of the localized orthogonal decomposition method. Comput. Methods Appl. Mech. Engrg., 350:123–153, June 2019. doi:10.1016/j.cma.2019.02.040.

$\bullet $ Tuuli Miinalainen, Atena Rezaei, Defne Us, Andreas Nüßing, Christian Engwer, Carsten H. Wolters, and Sampsa Pursiainen. A realistic, accurate and fast source modeling approach for the EEG forward problem. NeuroImage, 184:56 – 67, January 2019. doi:10.1016/j.neuroimage.2018.08.054.