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Gläser, Dennis

Dennis Gläser

Dr.-Ing.

Departure in February 2024

Contact

Business card (VCF)

Office Hours

By appointment only

Teaching

Summer semester 2016 - Summer semester 2018
Ringvorlesung SimTech"

Vita

Abitur

2006 at Goethe-Gymnasium in Ludwigsburg (Germany)

Akademic Degrees

2011: B.Sc. in Environmental Engineering, University of Stuttgart (Germany)
2014: M.Sc. in Environmental Engineering, University of Stuttgart (Germany)
2020: Promotion (Dr.-Ing.), University of Stuttgart (Germany)

Akademic Career

2016 - 2020: Doctoral Researcher, Institute for Modelling Hydraulic and Environmental Systems, University of Stuttgart (Germany)
since 2020: Postdoctoral Researcher, Institute for Modelling Hydraulic and Environmental Systems, University of Stuttgart (Germany)

Miscellaneous

2013 - 2014: Erasmus Exchange Program (1 semester), Escuela Técnica Superior de Ingenieros Industriales, Madrid (Spain)

2014: Student Researcher (6-months scholarship), Institute for Environmental Assessment and Water Studies (IDEAE), Barcelona (Spain)

2015: Research Assistant (12 months), Institute for Environmental Assessment and Water Studies (IDEAE), Barcelona (Spain)

Publications

Journal Articles
1. Boon, W. M., Gläser, D., Helmig, R., Weishaupt, K., & Yotov, I. (2024). A mortar method for the coupled Stokes-Darcy problem using the MAC scheme for Stokes and mixed finite elements for Darcy. Computational Geosciences, 28, Article 3. https://doi.org/10.1007/s10596-023-10267-6
  Abstract
  A discretization method with non-matching grids is proposed for the coupled Stokes-Darcy problem that uses a mortar variable at the interface to couple the marker and cell (MAC) method in the Stokes domain with the Raviart-Thomas mixed finite element pair in the Darcy domain. Due to this choice, the method conserves linear momentum and mass locally in the Stokes domain and exhibits local mass conservation in the Darcy domain. The MAC scheme is reformulated as a mixed finite element method on a staggered grid, which allows for the proposed scheme to be analyzed as a mortar mixed finite element method. We show that the discrete system is well-posed and derive a priori error estimates that indicate first order convergence in all variables. The system can be reduced to an interface problem concerning only the mortar variables, leading to a non-overlapping domain decomposition method. Numerical examples are presented to illustrate the theoretical results and the applicability of the method.
  BibTeX
  @article{boon_mortar_2024, abstract = {A discretization method with non-matching grids is proposed for the coupled Stokes-Darcy problem that uses a mortar variable at the interface to couple the marker and cell (MAC) method in the Stokes domain with the Raviart-Thomas mixed finite element pair in the Darcy domain. Due to this choice, the method conserves linear momentum and mass locally in the Stokes domain and exhibits local mass conservation in the Darcy domain. The MAC scheme is reformulated as a mixed finite element method on a staggered grid, which allows for the proposed scheme to be analyzed as a mortar mixed finite element method. We show that the discrete system is well-posed and derive a priori error estimates that indicate first order convergence in all variables. The system can be reduced to an interface problem concerning only the mortar variables, leading to a non-overlapping domain decomposition method. Numerical examples are presented to illustrate the theoretical results and the applicability of the method.}, author = {Boon, Wietse M. and Gläser, Dennis and Helmig, Rainer and Weishaupt, Kilian and Yotov, Ivan}, doi = {10.1007/s10596-023-10267-6}, issn = {1573-1499}, journal = {Computational Geosciences}, month = {06}, number = 3, pages = {413--430}, title = {A mortar method for the coupled Stokes-Darcy problem using the MAC scheme for Stokes and mixed finite elements for Darcy}, url = {https://doi.org/10.1007/s10596-023-10267-6}, volume = 28, year = 2024 }
  Link
  https://doi.org/10.1007/s10596-023-10267-6
2. Schneider, M., Gläser, D., Weishaupt, K., Coltman, E., Flemisch, B., & Helmig, R. (2023). Coupling staggered-grid and vertex-centered finite-volume methods for coupled porous-medium free-flow problems. Journal of Computational Physics, 482, 112042. https://doi.org/10.1016/j.jcp.2023.112042
  Abstract
  A new discretization approach for coupled free and porous-medium flows is introduced, which uses a finite-volume staggered-grid method for the discretization of the Navier-Stokes equations in the free-flow subdomain, while a vertex-centered finite-volume method is employed in the porous medium. The latter allows for the use of unstructured grids to discretize the porous medium, and the presented method is capable of handling non-matching grids at the interface. Moreover, the basis functions of the vertex-centered finite-volume method, with their degrees of freedom located at the interface, allow for an accurate evaluation of the coupling terms and of additional nonlinear velocity-dependent terms in the porous medium. The available advantages of this coupling method are investigated in a series of tests: a convergence test for various grid types, an evaluation of the implementation of the coupling conditions, and an example using the velocity-dependent Forchheimer term in the porous-medium subdomain.
  BibTeX
  @article{SCHNEIDER2023112042, abstract = {A new discretization approach for coupled free and porous-medium flows is introduced, which uses a finite-volume staggered-grid method for the discretization of the Navier-Stokes equations in the free-flow subdomain, while a vertex-centered finite-volume method is employed in the porous medium. The latter allows for the use of unstructured grids to discretize the porous medium, and the presented method is capable of handling non-matching grids at the interface. Moreover, the basis functions of the vertex-centered finite-volume method, with their degrees of freedom located at the interface, allow for an accurate evaluation of the coupling terms and of additional nonlinear velocity-dependent terms in the porous medium. The available advantages of this coupling method are investigated in a series of tests: a convergence test for various grid types, an evaluation of the implementation of the coupling conditions, and an example using the velocity-dependent Forchheimer term in the porous-medium subdomain.}, author = {Schneider, Martin and Gläser, Dennis and Weishaupt, Kilian and Coltman, Edward and Flemisch, Bernd and Helmig, Rainer}, doi = {https://doi.org/10.1016/j.jcp.2023.112042}, issn = {0021-9991}, journal = {Journal of Computational Physics}, month = {07}, pages = 112042, title = {Coupling staggered-grid and vertex-centered finite-volume methods for coupled porous-medium free-flow problems}, url = {https://www.sciencedirect.com/science/article/pii/S0021999123001377}, volume = 482, year = 2023 }
  Link
  https://www.sciencedirect.com/science/article/pii/S0021999123001377
3. Gläser, D., Koch, T., & Flemisch, B. (2023). GridFormat: header-only C++-library for grid file I/O. Journal of Open Source Software, 8, Article 90. https://doi.org/10.21105/joss.05778
  - BibTeX
  - Link
  BibTeX
  @article{paper-2023-gridformat, author = {Gläser, Dennis and Koch, Timo and Flemisch, Bernd}, doi = {10.21105/joss.05778}, journal = {Journal of Open Source Software}, month = {10}, number = 90, pages = 5778, publisher = {The Open Journal}, title = {GridFormat: header-only C++-library for grid file I/O}, url = {https://doi.org/10.21105/joss.05778}, volume = 8, year = 2023 }
  Link
  https://doi.org/10.21105/joss.05778
4. Boon, W. M., Gläser, D., Helmig, R., & Yotov, I. (2023). Flux-mortar mixed finite element methods with multipoint flux approximation. Computer Methods in Applied Mechanics and Engineering, 405, 115870. https://doi.org/10.1016/j.cma.2022.115870
  Abstract
  The flux-mortar mixed finite element method was recently developed in Boon et al. (2022) for a general class of domain decomposition saddle point problems on non-matching grids. In this work we develop the method for Darcy flow using the multipoint flux approximation as the subdomain discretization. The subdomain problems involve solving positive definite cell-centered pressure systems. The normal flux on the subdomain interfaces is the mortar coupling variable, which plays the role of a Lagrange multiplier to impose weakly continuity of pressure. We present well-posedness and error analysis based on reformulating the method as a mixed finite element method with a quadrature rule. We develop a non-overlapping domain decomposition algorithm for the solution of the resulting algebraic system that reduces it to an interface problem for the flux-mortar, as well as an efficient interface preconditioner. A series of numerical experiments is presented illustrating the performance of the method on general grids, including applications to flow in complex porous media.
  BibTeX
  @article{paper-2023-boon-flux-mortar, abstract = {The flux-mortar mixed finite element method was recently developed in Boon et al. (2022) for a general class of domain decomposition saddle point problems on non-matching grids. In this work we develop the method for Darcy flow using the multipoint flux approximation as the subdomain discretization. The subdomain problems involve solving positive definite cell-centered pressure systems. The normal flux on the subdomain interfaces is the mortar coupling variable, which plays the role of a Lagrange multiplier to impose weakly continuity of pressure. We present well-posedness and error analysis based on reformulating the method as a mixed finite element method with a quadrature rule. We develop a non-overlapping domain decomposition algorithm for the solution of the resulting algebraic system that reduces it to an interface problem for the flux-mortar, as well as an efficient interface preconditioner. A series of numerical experiments is presented illustrating the performance of the method on general grids, including applications to flow in complex porous media.}, author = {Boon, Wietse M. and Gläser, Dennis and Helmig, Rainer and Yotov, Ivan}, doi = {10.1016/j.cma.2022.115870}, issn = {0045-7825}, journal = {Computer Methods in Applied Mechanics and Engineering}, pages = 115870, title = {Flux-mortar mixed finite element methods with multipoint flux approximation}, url = {https://www.sciencedirect.com/science/article/pii/S004578252200826X}, volume = 405, year = 2023 }
  Link
  https://www.sciencedirect.com/science/article/pii/S004578252200826X
5. Koch, T., Gläser, D., Seeland, A., Roy, S., Schulze, K., Weishaupt, K., Boehringer, D., Hermann, S., & Flemisch, B. (2023). A sustainable infrastructure concept for improved accessibility, reusability, and archival of research software. arXiv. https://doi.org/10.48550/arXiv.2301.12830
  - BibTeX
  BibTeX
  @article{Koch:2023:SIC, author = {Koch, Timo and Gläser, Dennis and Seeland, Anett and Roy, Sarbani and Schulze, Katharina and Weishaupt, Kilian and Boehringer, David and Hermann, Sibylle and Flemisch, Bernd}, doi = {10.48550/arXiv.2301.12830}, journal = {arXiv}, title = {A sustainable infrastructure concept for improved accessibility, reusability, and archival of research software}, year = 2023 }
6. Boon, W. M., Gläser, D., Helmig, R., & Yotov, I. (2022). Flux-Mortar Mixed Finite Element Methods on NonMatching Grids. SIAM Journal on Numerical Analysis, 60, Article 3. https://doi.org/10.1137/20M1361407
  Abstract
  We investigate a mortar technique for mixed finite element approximations of a class of domain decomposition saddle point problems on nonmatching grids in which the variable associated with the essential boundary condition, referred to as flux, is chosen as the coupling variable. It plays the role of a Lagrange multiplier to impose weakly continuity of the variable associated with the natural boundary condition. The flux-mortar variable is incorporated with the use of a discrete extension operator. We present well-posedness and error analysis in an abstract setting under a set of suitable assumptions, followed by a nonoverlapping domain decomposition algorithm that reduces the global problem to a positive definite interface problem. The abstract theory is illustrated for Darcy flow, where the normal flux is the mortar variable used to impose continuity of pressure, and for Stokes flow, where the velocity vector is the mortar variable used to impose continuity of normal stress. In both examples, suitable discrete extension operators are developed and the assumptions from the abstract theory are verified. Numerical studies illustrating the theoretical results are presented for Darcy flow.
  BibTeX
  @article{doi:10.1137/20M1361407, abstract = { We investigate a mortar technique for mixed finite element approximations of a class of domain decomposition saddle point problems on nonmatching grids in which the variable associated with the essential boundary condition, referred to as flux, is chosen as the coupling variable. It plays the role of a Lagrange multiplier to impose weakly continuity of the variable associated with the natural boundary condition. The flux-mortar variable is incorporated with the use of a discrete extension operator. We present well-posedness and error analysis in an abstract setting under a set of suitable assumptions, followed by a nonoverlapping domain decomposition algorithm that reduces the global problem to a positive definite interface problem. The abstract theory is illustrated for Darcy flow, where the normal flux is the mortar variable used to impose continuity of pressure, and for Stokes flow, where the velocity vector is the mortar variable used to impose continuity of normal stress. In both examples, suitable discrete extension operators are developed and the assumptions from the abstract theory are verified. Numerical studies illustrating the theoretical results are presented for Darcy flow. }, author = {Boon, Wietse M. and Gläser, Dennis and Helmig, Rainer and Yotov, Ivan}, doi = {10.1137/20M1361407}, eprint = {https://doi.org/10.1137/20M1361407}, journal = {SIAM Journal on Numerical Analysis}, month = {05}, number = 3, pages = {1193-1225}, title = {Flux-Mortar Mixed Finite Element Methods on NonMatching Grids}, url = {https://doi.org/10.1137/20M1361407}, volume = 60, year = 2022 }
  Link
  https://doi.org/10.1137/20M1361407
7. Gläser, D., Schneider, M., Flemisch, B., & Helmig, R. (2022). Comparison of cell- and vertex-centered finite-volume schemes for flow in fractured porous media. Journal of Computational Physics, 448, 110715. https://doi.org/10.1016/j.jcp.2021.110715
  Abstract
  Flow in fractured porous media is of high relevance in a variety of geotechnical applications, given the fact that they ubiquitously occur in nature and that they can have a substantial impact on the hydraulic properties of rock. As a response to this, an active field of research has developed over the past decades, focusing on the development of mathematical models and numerical methods to describe and simulate the flow processes in fractured rock. In this work, we present a comparison of different finite volume-based numerical schemes for the simulation of flow in fractured porous media by means of numerical experiments. Two novel vertex-centered approaches are presented and compared to well-established numerical schemes in terms of convergence behavior and their performance on benchmark studies taken from the literature. The new schemes show to produce results that are in good agreement with those of established methods while leading to less degrees of freedom on unstructured simplex grids.
  BibTeX
  @article{paper-2021-glaeser-boxdfm, abstract = {Flow in fractured porous media is of high relevance in a variety of geotechnical applications, given the fact that they ubiquitously occur in nature and that they can have a substantial impact on the hydraulic properties of rock. As a response to this, an active field of research has developed over the past decades, focusing on the development of mathematical models and numerical methods to describe and simulate the flow processes in fractured rock. In this work, we present a comparison of different finite volume-based numerical schemes for the simulation of flow in fractured porous media by means of numerical experiments. Two novel vertex-centered approaches are presented and compared to well-established numerical schemes in terms of convergence behavior and their performance on benchmark studies taken from the literature. The new schemes show to produce results that are in good agreement with those of established methods while leading to less degrees of freedom on unstructured simplex grids.}, author = {Gläser, Dennis and Schneider, Martin and Flemisch, Bernd and Helmig, Rainer}, doi = {https://doi.org/10.1016/j.jcp.2021.110715}, journal = {Journal of Computational Physics}, month = {01}, pages = 110715, publisher = {Elsevier {BV}}, title = {Comparison of cell- and vertex-centered finite-volume schemes for flow in fractured porous media}, url = {https://www.sciencedirect.com/science/article/pii/S0021999121006100}, volume = 448, year = 2022 }
  Link
  https://www.sciencedirect.com/science/article/pii/S0021999121006100
8. Koch, T., Gläser, D., Weishaupt, K., Ackermann, S., Beck, M., Becker, B., Burbulla, S., Class, H., Coltman, E., Emmert, S., Fetzer, T., Grüninger, C., Heck, K., Hommel, J., Kurz, T., Lipp, M., Mohammadi, F., Scherrer, S., Schneider, M., et al. (2021). DuMux 3 – an open-source simulator for solving flow and transport problems in porous media with a focus on model coupling. Computers & Mathematics with Applications. https://doi.org/10.1016/j.camwa.2020.02.012
  Abstract
  We present version 3 of the open-source simulator for flow and transport processes in porous media DuMux. DuMux is based on the modular C++ framework Dune (Distributed and Unified Numerics Environment) and is developed as a research code with a focus on modularity and reusability. We describe recent efforts in improving the transparency and efficiency of the development process and community-building, as well as efforts towards quality assurance and reproducible research. In addition to a major redesign of many simulation components in order to facilitate setting up complex simulations in DuMux, version 3 introduces a more consistent abstraction of finite volume schemes. Finally, the new framework for multi-domain simulations is described, and three numerical examples demonstrate its flexibility.
  BibTeX
  @article{Version3Dumux, abstract = {We present version 3 of the open-source simulator for flow and transport processes in porous media DuMux. DuMux is based on the modular C++ framework Dune (Distributed and Unified Numerics Environment) and is developed as a research code with a focus on modularity and reusability. We describe recent efforts in improving the transparency and efficiency of the development process and community-building, as well as efforts towards quality assurance and reproducible research. In addition to a major redesign of many simulation components in order to facilitate setting up complex simulations in DuMux, version 3 introduces a more consistent abstraction of finite volume schemes. Finally, the new framework for multi-domain simulations is described, and three numerical examples demonstrate its flexibility.}, author = {Koch, Timo and Gl\"{a}ser, Dennis and Weishaupt, Kilian and Ackermann, Sina and Beck, Martin and Becker, Beatrix and Burbulla, Samuel and Class, Holger and Coltman, Edward and Emmert, Simon and Fetzer, Thomas and Gr\"{u}ninger, Christoph and Heck, Katharina and Hommel, Johannes and Kurz, Theresa and Lipp, Melanie and Mohammadi, Farid and Scherrer, Samuel and Schneider, Martin and Seitz, Gabriele and Stadler, Leopold and Utz, Martin and Weinhardt, Felix and Flemisch, Bernd}, doi = {10.1016/j.camwa.2020.02.012}, issn = {0898-1221}, journal = {Computers {\&} Mathematics with Applications}, month = {01}, publisher = {Elsevier {BV}}, title = {{DuMux} 3 {\textendash} an open-source simulator for solving flow and transport problems in porous media with a focus on model coupling}, url = {https://doi.org/10.1016/j.camwa.2020.02.012}, year = 2021 }
  Link
  https://doi.org/10.1016/j.camwa.2020.02.012
9. Schneider, M., Weishaupt, K., Gläser, D., Boon, W. M., & Helmig, R. (2020). Coupling staggered-grid and MPFA finite volume methods for free flow/porous-medium flow problems. Journal of Computational Physics, 401. https://doi.org/10.1016/j.jcp.2019.109012
  - BibTeX
  BibTeX
  @article{schneider.etAl2019, author = {Schneider, M. and Weishaupt, K. and Gläser, D. and Boon, W. M. and Helmig, R.}, doi = {https://doi.org/10.1016/j.jcp.2019.109012}, issn = {0021-9991}, journal = {Journal of Computational Physics}, title = {Coupling staggered-grid and MPFA finite volume methods for free flow/porous-medium flow problems}, volume = 401, year = 2020 }
10. Gläser, D., Flemisch, B., Class, H., & Helmig, R. (2020). Frackit: a framework for stochastic fracture network generation and analysis. Journal of Open Source Software, 5. https://doi.org/10.21105/joss.02291
  - BibTeX
  - Link
  BibTeX
  @article{frackit-2020-glaeser, author = {Gläser, Dennis and Flemisch, Bernd and Class, Holger and Helmig, Rainer}, doi = {10.21105/joss.02291}, journal = {Journal of Open Source Software}, month = {12}, page = {2291}, title = {Frackit: a framework for stochastic fracture network generation and analysis}, url = {https://joss.theoj.org/papers/10.21105/joss.02291}, volume = 5, year = 2020 }
  Link
  https://joss.theoj.org/papers/10.21105/joss.02291
11. Gläser, D., Flemisch, B., Helmig, R., & Class, H. (2019). A hybrid-dimensional discrete fracture model for non-isothermal two-phase flow in fractured porous media. GEM - International Journal on Geomathematics, 10, Article 1. https://doi.org/10.1007/s13137-019-0116-8
  - BibTeX
  - Link
  BibTeX
  @article{Glaeser-Glaeser-2019-01, author = {Gläser, Dennis and Flemisch, Bernd and Helmig, Rainer and Class, Holger}, doi = {10.1007/s13137-019-0116-8}, issn = {1869-2680}, journal = {GEM - International Journal on Geomathematics}, language = {en}, month = {01}, number = 1, pages = 5, title = {A hybrid-dimensional discrete fracture model for non-isothermal two-phase flow in fractured porous media}, url = {https://doi.org/10.1007/s13137-019-0116-8}, urldate = {2020-01-10}, volume = 10, year = 2019 }
  Link
  https://doi.org/10.1007/s13137-019-0116-8
12. Schneider, M., Gläser, D., Flemisch, B., & Helmig, R. (2018). Comparison of finite-volume schemes for diffusion problems. Oil & Gas Science and Technology – Revue d’IFP Energies Nouvelles, 73. https://ogst.ifpenergiesnouvelles.fr/articles/ogst/pdf/2018/01/ogst180050.pdf
  - BibTeX
  - Link
  BibTeX
  @article{NULL, author = {Schneider, Martin and Gläser, Dennis and Flemisch, Bernd and Helmig, Rainer}, journal = {Oil & Gas Science and Technology – Revue d'IFP Energies nouvelles}, month = {12}, note = {, IWS2ID=4565 , Partnerinstitution: IFP Energies nouvelles , Partneraddress: Rueil Malmaison }, title = {Comparison of finite-volume schemes for diffusion problems}, url = {https://ogst.ifpenergiesnouvelles.fr/articles/ogst/pdf/2018/01/ogst180050.pdf}, volume = 73, year = 2018 }
  Link
  https://ogst.ifpenergiesnouvelles.fr/articles/ogst/pdf/2018/01/ogst180050.pdf
13. Koch, T., Gläser, D., Weishaupt, K., Ackermann, S., Beck, M., Becker, B., Burbulla, S., Class, H., Coltman, E., Fetzer, T., Flemisch, B., Grüninger, C., Heck, K., Hommel, J., Kurz, T., Lipp, M., Mohammadi, F., Schneider, M., Seitz, G., et al. (2018). DuMuX 3.0.0. https://doi.org/10.5281/zenodo.2479595
  - BibTeX
  BibTeX
  @article{koch2018dumux, author = {Koch, Timo and Gläser, Dennis and Weishaupt, Kilian and Ackermann, Sina and Beck, Martin and Becker, Beatrix and Burbulla, S. and Class, Holger and Coltman, Edward and Fetzer, Thomas and Flemisch, Bernd and Grüninger, Christoph and Heck, Katharina and Hommel, Johannes and Kurz, Theresa and Lipp, Melanie and Mohammadi, Farid and Schneider, Martin and Seitz, Gabriele and Scholz, Simon and Weinhardt, Felix}, doi = {10.5281/zenodo.2479595}, title = {DuMuX 3.0.0}, year = 2018 }
14. Gläser, D., Helmig, R., Flemisch, B., & Class, H. (2017). A discrete fracture model for two-phase flow in fractured porous media. Advances in Water Resources, 110. https://doi.org/10.1016/j.advwatres.2017.10.031
  - BibTeX
  BibTeX
  @article{NULL, author = {Gläser, Dennis and Helmig, Rainer and Flemisch, Bernd and Class, Holger}, doi = {10.1016/j.advwatres.2017.10.031}, journal = {Advances in Water Resources}, month = {12}, note = {, IWS2ID=4485 }, page = {335-348}, title = {A discrete fracture model for two-phase flow in fractured porous media}, volume = 110, year = 2017 }
15. Gläser, D., Dell’Oca, A., Tatomir, A., Bensabat, J., Class, H., Guadagnini, A., Helmig, R., McDermott, C., Riva, M., & Sauter, M. (2016). An Approach Towards a FEP-based Model for Risk Assessment for Hydraulic Fracturing Operations. Energy Procedia, 97, 387–394. https://doi.org/10.1016/j.egypro.2016.10.030
  - BibTeX
  - Link
  BibTeX
  @article{Glaeser-Glaeser-2016-01, author = {Gläser, D. and Dell’Oca, A. and Tatomir, A. and Bensabat, J. and Class, H. and Guadagnini, A. and Helmig, R. and McDermott, C. and Riva, M. and Sauter, M.}, doi = {10.1016/j.egypro.2016.10.030}, issn = {1876-6102}, journal = {Energy Procedia}, language = {en}, month = {11}, note = {European Geosciences Union General Assembly 2016, EGU Division Energy, Resources \& the Environment (ERE)}, pages = {387--394}, series = {European {Geosciences} {Union} {General} {Assembly} 2016, {EGU} {Division} {Energy}, {Resources} \& the {Environment} ({ERE})}, title = {An {Approach} {Towards} a {FEP}-based {Model} for {Risk} {Assessment} for {Hydraulic} {Fracturing} {Operations}}, url = {http://www.sciencedirect.com/science/article/pii/S187661021630978X}, urldate = {2020-01-14}, volume = 97, year = 2016 }
  Link
  http://www.sciencedirect.com/science/article/pii/S187661021630978X
Datasets
1. Oukili, H., Ackermann, S., Buntic, I., Class, H., Coltman, E., Flemisch, B., Ghosh, T., Gläser, D., Grüninger, C., Hommel, J., Jupe, T., Keim, L., Kelm, M., Kiemle, S., Koch, T., Kostelecky, A. M., Pallam, H. V., Schneider, M., Stadler, L., et al. (2023). DuMux 3.7.0 [DaRUS]. https://doi.org/10.18419/DARUS-3405
  - BibTeX
  - Link
  BibTeX
  @dataset{DARUS-3405_2023, author = {Oukili, Hamza and Ackermann, Sina and Buntic, Ivan and Class, Holger and Coltman, Edward and Flemisch, Bernd and Ghosh, Tufan and Gläser, Dennis and Grüninger, Christoph and Hommel, Johannes and Jupe, Tim and Keim, Leon and Kelm, Mathis and Kiemle, Stefanie and Koch, Timo and Kostelecky, Anna Mareike and Pallam, Harsha Vardhan and Schneider, Martin and Stadler, Leopold and Utz, Martin and Wang, Yue and Wendel, Kai and Winter, Roman and Wu, Hanchuan}, doi = {10.18419/DARUS-3405}, publisher = {DaRUS}, title = {{DuMux 3.7.0}}, url = {https://doi.org/10.18419/DARUS-3405}, version = {V1}, year = 2023 }
  Link
  https://doi.org/10.18419/DARUS-3405
Anthology Chapters
1. Schneider, M., Gläser, D., Flemisch, B., & Helmig, R. (2017). Nonlinear finite-volume scheme for complex flow processes on corner-point grids. In Finite Volumes for Complex Applications VIII - Hyperbolic, Elliptic and Parabolic Problems: FVCA 8, 12.06.2017 - 16.06.2017, Lille. Springer-Verlag. https://link.springer.com/chapter/10.1007/978-3-319-57394-6_44
  - BibTeX
  - Link
  BibTeX
  @incollection{NULL, author = {Schneider, Martin and Gläser, Dennis and Flemisch, Bernd and Helmig, Rainer}, booktitle = {Finite Volumes for Complex Applications VIII - Hyperbolic, Elliptic and Parabolic Problems: FVCA 8, 12.06.2017 - 16.06.2017, Lille}, month = {06}, note = {, IWS2ID=4425 }, publisher = {Springer-Verlag}, title = {Nonlinear finite-volume scheme for complex flow processes on corner-point grids}, url = {https://link.springer.com/chapter/10.1007/978-3-319-57394-6_44}, year = 2017 }
  Link
  https://link.springer.com/chapter/10.1007/978-3-319-57394-6_44
Master’s Theses
1. Gläser, D. (2014). Spatial model coupling for the simulation of CO2 injection scenarios in deep saline aquifers [Masterthesis].
  - BibTeX
  BibTeX
  @mastersthesis{NULL, author = {Gläser, Dennis}, month = {12}, note = {, IWS2ID=3061 , Institution: Institut für Wasserbau , Address: Universität Stuttgart , Partneraddress: Barcelona, Spain }, school = {Universität Stuttgart, Institut für Wasserbau}, title = {Spatial model coupling for the simulation of CO2 injection scenarios in deep saline aquifers}, type = {Masterthesis}, year = 2014 }
2. Gläser, D. (2011). Simulation der Konvektionsströmung bei der Speicherung von CO2 in tiefen Gesteinsformationen [Bachelorarbeit].
  - BibTeX
  BibTeX
  @mastersthesis{NULL, author = {Gläser, Dennis}, month = {11}, note = {, IWS2ID=2677 , Institution: Institut für Wasserbau , Address: Universität Stuttgart }, school = {Universität Stuttgart, Institut für Wasserbau}, title = {Simulation der Konvektionsströmung bei der Speicherung von CO2 in tiefen Gesteinsformationen}, type = {Bachelorarbeit}, year = 2011 }
Doctoral Theses
1. Gläser, D. (2020). Discrete fracture modeling of multi-phase flow and deformation in fractured poroelastic media (Vol. 275) [Phdthesis, Stuttgart: Eigenverlag des Instituts für Wasser- und Umweltsystemmodellierung der Universität Stuttgart]. http://dx.doi.org/10.18419/opus-11040
  - BibTeX
  - Link
  BibTeX
  @phdthesis{lh2-2020-diss-glaeser, author = {Gläser, Dennis}, doi = {http://dx.doi.org/10.18419/opus-11040}, isbn = {978-3-942036-79-5}, langid = {english}, month = {03}, publisher = {Stuttgart: Eigenverlag des Instituts für Wasser- und Umweltsystemmodellierung der Universität Stuttgart}, rights = {info:eu-repo/semantics/openAccess}, school = {Universität Stuttgart}, series = {Mitteilungen / Institut für Wasser- und Umweltsystemmodellierung, Universität Stuttgart}, supervisor = {Flemisch, Bernd}, title = {Discrete fracture modeling of multi-phase flow and deformation in fractured poroelastic media}, type = {phdthesis}, url = {https://elib.uni-stuttgart.de/handle/11682/11057}, urldate = {2020-09-25}, volume = 275, year = 2020 }
  Link
  https://elib.uni-stuttgart.de/handle/11682/11057

Talks

D. Gläser, “Discrete fracture modeling of multi-phase flow and deformation in fractured poroelastic media,” phdthesis, Stuttgart: Eigenverlag des Instituts für Wasser- und Umweltsystemmodellierung der Universität Stuttgart, 2020. doi: http://dx.doi.org/10.18419/opus-11040.
- BibTeX
- Link
BibTeX
@phdthesis{lh2-2020-diss-glaeser, author = {Gläser, Dennis}, doi = {http://dx.doi.org/10.18419/opus-11040}, isbn = {978-3-942036-79-5}, langid = {english}, month = {03}, publisher = {Stuttgart: Eigenverlag des Instituts für Wasser- und Umweltsystemmodellierung der Universität Stuttgart}, rights = {info:eu-repo/semantics/openAccess}, school = {Universität Stuttgart}, series = {Mitteilungen / Institut für Wasser- und Umweltsystemmodellierung, Universität Stuttgart}, supervisor = {Flemisch, Bernd}, title = {Discrete fracture modeling of multi-phase flow and deformation in fractured poroelastic media}, type = {phdthesis}, url = {https://elib.uni-stuttgart.de/handle/11682/11057}, urldate = {2020-09-25}, volume = 275, year = 2020 }
Link
https://elib.uni-stuttgart.de/handle/11682/11057
D. Gläser, “Finite-volume based discrete fracture modeling of flow, transport and deformation,” SIAM Conference on Mathematical & Computational Issues In the Geosciences, 11.03.2019 - 14.03.2019, Houston, USA. Mar. 2019. [Online]. Available: https://www.siam.org/conferences/cm/conference/gs19
- BibTeX
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BibTeX
@misc{siam-2019-dg, author = {Gläser, Dennis}, booktitle = {SIAM Conference on Mathematical & Computational Issues In the Geosciences, 11.03.2019 - 14.03.2019, Houston, USA}, month = {03}, title = {Finite-volume based discrete fracture modeling of flow, transport and deformation}, type = {Presentation/Talk}, url = {https://www.siam.org/conferences/cm/conference/gs19}, year = 2019 }
Link
https://www.siam.org/conferences/cm/conference/gs19
D. Glaeser, R. Helmig, H. Class, and B. Flemisch, “A discrete fracture model using a cell-centered finite volume scheme with multi-point flux approximation,” IACM 19th International Conference on Finite Elements in Flow Problems (FEF), 05.04.2017 - 07.04.2017, Rome, Italy. Apr. 2017. [Online]. Available: http://congress.cimne.com/FEF2017/frontal/default.asp
- BibTeX
- Link
BibTeX
@misc{glaeserfef2017, author = {Glaeser, Dennis and Helmig, Rainer and Class, Holger and Flemisch, Bernd}, booktitle = {IACM 19th International Conference on Finite Elements in Flow Problems (FEF), 05.04.2017 - 07.04.2017, Rome, Italy}, month = {04}, title = {A discrete fracture model using a cell-centered finite volume scheme with multi-point flux approximation}, type = {Vortrag}, url = {http://congress.cimne.com/FEF2017/frontal/default.asp}, year = 2017 }
Link
http://congress.cimne.com/FEF2017/frontal/default.asp
D. Gläser, “A discrete fracture model using a cell-centered finite volume scheme with multi-point flux approximation,” X-DMS eXtended Disretization MethodS for partial differential equations on complex and evolving domains, 19.06.2017 - 21.06.2017, Umea, Sweden. Jun. 2017. [Online]. Available: https://xdms2017.sciencesconf.org/
- BibTeX
- Link
BibTeX
@misc{xdms-2017-dg, author = {Gläser, Dennis}, booktitle = {X-DMS eXtended Disretization MethodS for partial differential equations on complex and evolving domains, 19.06.2017 - 21.06.2017, Umea, Sweden}, month = {06}, title = {A discrete fracture model using a cell-centered finite volume scheme with multi-point flux approximation}, type = {Vortrag}, url = {https://xdms2017.sciencesconf.org/}, year = 2017 }
Link
https://xdms2017.sciencesconf.org/

Posters

P. Glaeser and G. Dennis, “Thermal modeling of airless bodies - lunar polar case,” EPSC-DPS Joint Meeting 2019, 15.09.2019 - 20.09.2019, Geneva, Switzerland. Sep. 2019. [Online]. Available: https://www.epsc-dps2019.eu/
- BibTeX
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BibTeX
@misc{glaeserepsc2019, author = {Glaeser, Philipp and Dennis, Glaeserm}, booktitle = {EPSC-DPS Joint Meeting 2019, 15.09.2019 - 20.09.2019, Geneva, Switzerland}, month = {09}, title = {Thermal modeling of airless bodies - lunar polar case}, type = {Poster session}, url = {https://www.epsc-dps2019.eu/}, year = 2019 }
Link
https://www.epsc-dps2019.eu/
D. Gläser, “A finite-volume based discrete fracture model for non-isothermal flow and transport in fractured porous media,” Computational Methods in Water Resources XXII, 03.06.2018 - 07.06.2018, Saint-Malo, France. Jun. 2018. [Online]. Available: http://cmwrconference.org/2018/
- BibTeX
- Link
BibTeX
@misc{Glaeser2018CMWR, author = {Gläser, Dennis}, booktitle = {Computational Methods in Water Resources XXII, 03.06.2018 - 07.06.2018, Saint-Malo, France}, month = {06}, title = {A finite-volume based discrete fracture model for non-isothermal flow and transport in fractured porous media}, type = {Poster Session}, url = {http://cmwrconference.org/2018/}, year = 2018 }
Link
http://cmwrconference.org/2018/
D. Glaeser, R. Helmig, B. Flemisch, and H. Class, “A discrete fracture model using a cell-centered finite volume scheme with multi-point flux approximation,” 9th International Conference on Porous Media & Annual Meeting (InterPore), 08.05.2017 - 11.05.2017, Rotterdam, Netherlands. May 2017. [Online]. Available: https://www.new.interpore.org/interpore-rotterdam-2017
- BibTeX
- Link
BibTeX
@misc{glaeserinterpore2017, author = {Glaeser, Dennis and Helmig, Rainer and Flemisch, Bernd and Class, Holger}, booktitle = {9th International Conference on Porous Media \& Annual Meeting (InterPore), 08.05.2017 - 11.05.2017, Rotterdam, Netherlands}, month = {05}, title = {A discrete fracture model using a cell-centered finite volume scheme with multi-point flux approximation}, type = {Poster session}, url = {https://www.new.interpore.org/interpore-rotterdam-2017}, year = 2017 }
Link
https://www.new.interpore.org/interpore-rotterdam-2017
D. Glaeser, H. Class, A. Kissinger, and M. Beck, “Towards a parameterized model for risk assessment in shale gas exploration,” European Geosciences Union General Assembly (2016), 17.04.2016 - 22.04.2016, Vienna, Austria. Apr. 2016. [Online]. Available: https://www.egu2016.eu/
- BibTeX
- Link
BibTeX
@misc{glaeseregu2016, author = {Glaeser, Dennis and Class, Holger and Kissinger, Alex and Beck, Martin}, booktitle = {European Geosciences Union General Assembly (2016), 17.04.2016 - 22.04.2016, Vienna, Austria}, month = {04}, title = {Towards a parameterized model for risk assessment in shale gas exploration}, type = {Poster session}, url = {https://www.egu2016.eu/}, year = 2016 }
Link
https://www.egu2016.eu/

Supervised student assignements

Implementing and testing a standard black oil model in Dumux. (2021). (Masterarbeit).
Numerical investigation of fracture dilation processes in radioactive waste storage sites. (2020). (Masterarbeit). Universität Stuttgart.
Investigation of parametrization of dual-continuum models through multi-scale finite volume methods. (2017). (Masterthesis).
Modellierung des diffusiven Methantransports im Zusammenhang mit Hydraulic Fracturing. (2017). (Bachelorarbeit).

Current research projects

NFDI4Ing, Task Area Betty: Engineering Research Software
Laufzeit: 10/2020 - 09/2025
Abteilung: LH2
Leitung: Bernd Flemisch
Finanzierung: DFG

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