\n\n\nCES students who want to register their study plan, please drop by my office after any of my [classes](\/academics\/classes) to discuss your selection\/changes. [See also here]( \/academics\/submenu\/computational-engineering-science\/ces-study-plans) for more information about CES study plans. \n
\n[ui-accordion independent=true open=none]\n[ui-accordion-item title="Research Interests"]\n* Mathematical modeling in continuum physics\n* Numerical methods for nonlinear hyperbolic systems\n* Kinetic gas theory, Boltzmann equation, rarefied gases and micro-flows\n* Magnetohydrodynamics for plasmas\n* Multi-scale methods, especially time integrators.\n\nRead more details in our [research section](\/research\/mathematical-modeling-and-simulation).\n\n[\/ui-accordion-item]\n[ui-accordion-item title="Short CV"]\n\n| | |\n|---|---|\n| 1994--1999 | Diplom-Ingenieur "Engineering Physics (Physikalische Ingenieurwissenschaft)", TU Berlin |\n| 2000--2004 | Research Assistant at the Seminar for Applied Mathematics, ETH Zurich, Switzerland |\n| 2004 | PhD in Applied Mathematics, ETH Zurich |\n| 2004\/05 | Post-Doctoral Research Associate, Hong Kong University of Science and Technology, Hong Kong |\n| 2005\/06 | Post-Doctoral Fellow, Princeton University, USA |\n| 2006 | EURYI(Pre-ERC) Award of the European Science Foundation |\n| 2007--2010 | Research Assistant Professor, Seminar for Applied Mathematics, ETH Zurich, Switzerland |\n| 2009 | Visiting Professor, University of Washington, Seattle |\n| since 2010 | Professor and Chair \'Mathematics in Computational Engineering Science\', RWTH Aachen |\n| since 2019 | Head\/Chair of Research Lab \'Applied and Computational Mathematics\', RWTH Aachen |\n\n\n[\/ui-accordion-item]\n[ui-accordion-item title="Publications"]\n\nAn extensive and generally reliable list of my publications can be found under my [ORCid profile](https:\/\/orcid.org\/0000-0003-0008-2061).\n\n[\/ui-accordion-item]\n[ui-accordion-item title="Further Information"]\n\nunder construction\n\n[\/ui-accordion-item]\n[\/ui-accordion]\n','active':!0,'position':'Head of Institute','object_media':{'X-Wing-Fighter-from-Office-Supplies.jpeg':{'name':'X-Wing-Fighter-from-Office-Supplies.jpeg','type':'image\/jpeg','size':31138,'path':'X-Wing-Fighter-from-Office-Supplies.jpeg'}}},'4cd13d3782f9b81e91c1e6df6b2f6251':{'published':!0,'active':!0,'image_align':'left','position':'PhD Student','last_name':'Paar','first_name':'Robin','location':'Rogowski 328a','phone':'+49-(0)241-80-98667','category':'Post-Docs and PhD Students','priority':2,'image':{'02_Robin_Paar_ACoM.jpg':{'name':'02_Robin_Paar_ACoM.jpg','type':'image\/jpeg','size':1161985,'path':'02_Robin_Paar_ACoM.jpg'}},'object_media':{'fak07.png':{'name':'fak07.png','type':'image\/png','size':16538,'path':'fak07.png'}},'content':'### Research Interests\n\n* Shallow flow moment equations\n* Shallow water equations and modeling\n* Moment approximation for the Poisson problem\n\n### Teaching\n\n* 2017 - 2023: Various student assistant positions at RWTH\n* WS24\/25: FEM part of "Partial Differential Equations (CES+SISC)\n\n### About me\n\n05\/2024 - now: \tPhD candidate at ACoM\/RTG EDDy (Energy, Entropy and Dissipative Dynamics)
\n10\/2020 - 03\/2024: \t Master Studies Mathematics, RWTH Aachen University
\n10\/2016 - 09\/2020:\t Bachelor Studies Mathematics, RWTH Aachen University ','email':'paar@acom.rwth-aachen.de'},'05ba9413daf022f41dffadfdbafa0140':{'published':!0,'active':!0,'image_align':'left','position':'Guest Professor','title':'Prof. Dr.','last_name':'Pavic-Colic','first_name':'Milana','location':'Rogowski 326','phone':'+49-(0)241-80-98661','email':'pavic-colic@acom.rwth-aachen.de','category':'Professors','priority':2,'image':{'user\/data\/flex\/contacts\/IMG_5689.JPG':{'name':'IMG_4233 2.JPG','type':'image\/jpeg','size':1417061,'path':'IMG_4233 2.JPG'},'user\/data\/flex\/contacts\/IMG_4233 2.JPG':{'name':'IMG_4233 2.JPG','type':'image\/jpeg','size':1153156,'path':'IMG_4233 2.JPG'}},'object_media':[],'content':'My research interests include applied mathematical analysis and modelling, with an accent on study of equations arising in kinetic theory of gases, in particular in the context of mixtures of monatomic and polyatomic gases.\n\n### Education\n* 2014 PhD in Mathematics, \u00c9cole normale sup\u00e9rieure de Cachan and University of Novi Sad in _cotutelle_\n* 2010 Master in Applied Mathematics, Faculty of Sciences, University of Novi Sad\n* 2009 Bachelor in Mathematical Engeneering, Faculty of Sciences, University of Novi Sad\n\n### Experience\n* 2023-present\tVisiting Professor, ACoM, RWTH Aachen University\n* 2021-present\tAssociate Professor, University of Novi Sad\n* 2016-21 \t Assistant Professor, University of Novi Sad\n* 2014-16\t Teaching assistant, Faculty of Sciences, University of Novi Sad\n* 2011-14\t Research assistant, Faculty of Sciences, University of Novi Sad\n\n### Fellowships and Awards\n* Alexander von Humboldt Research Fellowship for Experienced Researchers, host: Prof. Manuel Torrilhon (01\/08\/2020 \u2013 30\/04\/2023)\n* J. T. Oden Faculty fellowship, Oden Institute for Computational Engineering and Sciences, University of Texas at Austin, USA, Host: Prof. Irene M. Gamba (30\/01\/2019 \u2013 16\/02\/2019, 01\/03\/2018 \u2013 31\/05\/2018, 24\/04\/2016 \u2013 07\/05\/2016)\n* Fulbright Visiting Scholar Program for Advanced Research grant (01\/09\/2017 \u2013 28\/02\/2018)\n* Scholarship of the French Government for PhD studies in cotutelle (01\/10\/2010 \u2013 25\/09\/2014)\n* Dositeja grant for PhD studies abroad, Fund for Young Talents of the Republic of Serbia (2011, 2012, 2013, 2014)\n* Dositeja grant for master studies in Serbia, Fund for Young Talents of the Republic of Serbia (2010)\n* Scholarship of Ministry of Education and Sports of Republic of Serbia (2006, 2007, 2008, 2009)\n* Best undergraduate student award, Faculty of Sciences, University of Novi Sad (2005, 2006, 2007, 2008, 2009)\n\n\n\n'},'6e4788bb98e509b2f3be7a9b39d666ce':{'published':!0,'image_align':'left','position':'PhD Student','last_name':'Doehring','first_name':'Daniel','email':'doehring@acom.rwth-aachen.de','category':'Post-Docs and PhD Students','priority':2,'image':{'user\/data\/flex\/contacts\/Lichtbild.jpg':{'name':'Lichtbild.jpg','type':'image\/jpeg','size':5104197,'path':'user\/data\/flex\/contacts\/Lichtbild.jpg'}},'content':'### Research Interests\n\n* Runge-Kutta Methods for Hyperbolic PDEs: Optimized Stability, Multirate, Internal Stability, Local-Time-Stepping, Strong Stability Preservation\n* Discontinuous Galerkin Methods: Developer of [`Trixi.jl`](https:\/\/github.com\/trixi-framework\/Trixi.jl)\n\n### Publications\n* D.D., L. Christmann, M. Schlottke-Lakemper, G.J. Gassner, M.Torrilhon: \n[Fourth-Order Paired-Explicit Runge-Kutta Methods](https:\/\/doi.org\/10.48550\/arXiv.2408.05470) \n_Preprint on arXiv_\n\n* D.D., M. Schlottke-Lakemper, G.J. Gassner, M.Torrilhon: \n[Multirate Time-Integration based on Dynamic ODE Partitioning through Adaptively Refined Meshes for Compressible Fluid Dynamics](https:\/\/doi.org\/10.1016\/j.jcp.2024.113223) \n\n* D.D., G.J. Gassner, M.Torrilhon: \n[Many-Stage Optimal Stabilized Runge-Kutta Methods for Hyperbolic Partial Differential Equations](https:\/\/doi.org\/10.1007\/s10915-024-02478-5) \n\n* J. Strake, D.D., A. Benigni: \n[MGRIT-Based Multi-Level Parallel-in-Time Electromagnetic Transient Simulation](https:\/\/www.mdpi.com\/1996-1073\/15\/21\/7874) \n_Contribution as student research assistant_\n\n### Talks\n\n#### Conferences\n\n* WCCM & PANACM 2024. 21. - 26. July, Vancouver, CA. \n[Multirate Time-Integration based on Dynamic ODE Partitioning through Adaptively Refined Meshes for Convection-Dominated Flows](https:\/\/github.com\/DanielDoehring\/Slides\/blob\/main\/2024\/Multirate%20Time-Integration%20based%20on%20Dynamic%20ODE%20Partitioning%20through%20Adaptively%20Refined%20Meshes%20for%20Convection-Dominated%20Flows.pdf)\n* JuliaCon 2024. 09. - 13. July, Eindhoven, NL. \n[Towards Aerodynamic Simulations in Julia with Trixi.jl](https:\/\/github.com\/DanielDoehring\/Slides\/blob\/main\/2024\/Towards%20Aerodynamic%20Simulations%20in%20Julia%20with%20Trixi.jl.pdf)\n\n* PDESoft 2024. 01. - 03. July, Cambridge, UK. \n[Non-intrusive multirate time-integration for high-order accurate compressible fluid dynamics with Trixi.jl](https:\/\/github.com\/DanielDoehring\/Slides\/blob\/main\/2024\/Non-intrusive%20Multirate%20Time-Integration%20for%20High-Order%20accurate%20Compressible%20Fluid%20Dynamics%20with%20Trixi.jl.pdf)\n\n#### Invited Talks\n \n* 2024\/15\/05: University of Kassel: Analysis and Applied Mathematics: Numerics of Partial Differential Equations (Group of [Andreas Meister](https:\/\/www.uni-kassel.de\/fb10\/institute\/mathematik\/arbeitsgruppen\/analysis-und-angewandte-mathematik\/prof-dr-andreas-meister)): \n[Many-Stage Optimal Stabilized Runge-Kutta Methods for Hyperbolic Partial Differential Equations](https:\/\/github.com\/DanielDoehring\/Slides\/blob\/main\/2024\/%20Many-Stage%20Optimal%20Stabilized%20Runge-Kutta%20Methods%20for%20Hyperbolic%20Partial%20Differential%20Equations.pdf)\n\n### About me\n\n02\/2023 - now: PhD\/Graduate Student at ACoM \n09\/2021 - 02\/2022: Exchange Semester at ETH Zurich
\n04\/2021 - 12\/2022: Master Studies Computational Engineering Science, RWTH Aachen. Focus: Mathematics
\n01\/2019 - 05\/2019: Exchange Semester at University of Pennsylvania
\n10\/2016 - 03\/2021: Bachelor Studies Computational Engineering Science, RWTH Aachen. Focus: Flow & Combustion\n\n### Teaching\n* Math 4 for Computational Engineering Science (Summer term 2023)\n* Math 2 for Computational Engineering Science (Summer term 2024)','active':!0,'location':'Rogowski 328a','phone':'+49-(0)241-80-98667','object_media':{'PDESoft_2024.pdf':{'name':'PDESoft_2024.pdf','type':'application\/pdf','size':4901091,'path':'PDESoft_2024.pdf'},'Kassel.pdf':{'name':'Kassel.pdf','type':'application\/pdf','size':2866636,'path':'Kassel.pdf'}}},'21f16a651634896a7db1b50a17fe6b7e':{'published':!0,'active':!0,'image_align':'left','position':'Post-Doc','last_name':'Theisen','first_name':'Lambert','location':'Rogowski 229','phone':'+49-(0)241-80-98686','email':'theisen@acom.rwth-aachen.de','category':'Post-Docs and PhD Students','priority':1,'image':{'user\/data\/flex\/contacts\/lambert_theisen.jpg':{'name':'lambert_theisen.jpg','type':'image\/jpeg','size':18032,'path':'lambert_theisen.jpg'}},'object_media':[],'content':'For the latest updates, checkout my personal website [www.thsn.dev](https:\/\/thsn.dev).\n\n[ui-accordion independent=true open=none]\n[ui-accordion-item title="Research Interests"]\nResearching PDE eigenvalue problems, asymptotic analysis of expanding domains, directional homogenization, preconditioners for eigenvalue algorithms, preconditioners for linear solvers, spectral coarse spaces for domain decomposition, and Galerkin methods for moment models in rarefied gas modelling.\n[\/ui-accordion-item]\n[ui-accordion-item title="Short CV"]\n#### Education\n* **10\/19\u2009\u2013\u2009now**: PhD Student @ RWTH Aachen University, Aachen, Germany\n* **10\/14\u2009\u2013\u200904\/18**: Bachelor of Science in Computational Engineering Science (CES) @ RWTH Aachen University, Aachen, Germany\n* **04\/18\u2009\u2013\u200909\/19**: Master of Science in Computational Engineering Science (CES) @ RWTH Aachen University, Aachen, Germany\n\n#### Professional\n* **04\/2024\u2013\u2009now**: Research Assistant @ ACoM \/ Applied and Computational Mathematics, RWTH Aachen\n* **10\/22\u2009\u2013\u200903\/24**: Research Assistant @ Chair of Numerical Mathematics for High Performance Computing (NMH\/IANS), University of Stuttgart\n* **10\/19\u2009\u2013\u200909\/22**: Research Assistant @ MathCCES \/ Applied and Computational Mathematics, RWTH Aachen\n* **10\/17\u2009\u2013\u200903\/18**: Internship about 3D CFD Simulation and Hexahedral Meshing @ ABB Corporate Research Center Baden-D\u00e4ttwil, Switzerland\n* **08\/15\u2009\u2013\u200910\/15**: Working Student in IT and EDV Systems @ Sanofi, Frankfurt am Main, Germany\n* **07\/14\u2009\u2013\u200910\/14**: Working Student in Export & Dispatch @ Sanofi, Frankfurt am Main, Germany\n[\/ui-accordion-item]\n[ui-accordion-item title="Publications"]\nAn extensive and generally reliable list of my publications can be found under my [ORCid profile](https:\/\/orcid.org\/0000-0001-5460-5425).\n[\/ui-accordion-item]\n[ui-accordion-item title="Teaching"]\n* **SS23**: Assistant for Schulmathematik vom h\u00f6heren Standpunkt (School mathematics from the higher perspective) @ NMH\/IANS, University of Stuttgart, with Prof. Stamm\n* **WS22**: Assistant for H\u00f6here Mathematik 1 f\u00fcr Ingenieure (higher mathematics 1 for engineers) @ LExMath - Lehrexportzentrum Mathematik, University of Stuttgart, with Prof. Stroppel\n* **SS22**: Assistant for Mathematical aspects in computational chemistry @ ACoM, RWTH Aachen, with Prof. Stamm\n* **WS21**: Assistant for Mathematische Grundlagen III (CES) @ MathCCES, RWTH Aachen, with Prof. Torrilhon & Prof. Krumscheid\n* **WS20**: Assistant for Mathematische Grundlagen III (CES) @ MathCCES, RWTH Aachen, with Prof. Stamm & Prof. Hakon Hoel\n* **SS20**: Assistant for Mathematische Grundlagen IV (CES) @ MathCCES, RWTH Aachen, with Prof. Stamm & Prof. Krumscheid\n* **WS19\/20**: Assistant for Mathematische Grundlagen I (CES) @ MathCCES, RWTH Aachen, with Prof. Stamm & Prof. Krumscheid\n* **SS19**: Tutor for Mathematische Grundlagen IV (CES) @ MathCCES, RWTH Aachen\n* **WS18\/19**: Tutor for Partielle Differentialgleichungen (CES) @ MathCCES, RWTH Aachen\n[\/ui-accordion-item]\n[\/ui-accordion]\n'},'26c29c058eacc06590f4b77b899fa86b':{'published':!0,'image_align':'left','last_name':'Scholz','first_name':'Ullika','location':'Rogowski 328d','category':'Post-Docs and PhD Students','priority':2,'image':{'user\/data\/flex\/contacts\/DSCF9665.jpg':{'name':'DSCF9665.jpg','type':'image\/jpeg','size':5077824,'path':'user\/data\/flex\/contacts\/DSCF9665.jpg'}},'email':'scholz@acom.rwth-aachen.de','active':!0,'position':'PhD Student','content':'### Research Interests\n\nI write my thesis on a hierarchy of dimensionally reduced equation systems for incompressible free surface flows. My equations are an extension to the [moment approximations and model cascades for shallow flow](https:\/\/www.researchgate.net\/publication\/330757693_Moment_Approximations_and_Model_Cascades_for_Shallow_Flow) by Prof. Julia Kowalski and Prof. Manuel Torrilhon. The PDE systems rely on vertical averaging similar to the classical nonlinear shallow water equations. The difference is that before the averaging takes place the flow variables are replaced by a polynomial expansion in vertical direction. In my equations the pressure is not entirely hydrostatic. This makes the systems dispersive (and difficult to solve).\nBefore starting my Ph.D. I have looked at spline basis functions for a moment system derived from the Boltzmann equation.\n\n\n### About me\n\n* Since 03\/2020 Ph.D. candidate at ACoM, RWTH Aachen University, Germany.\n* 12\/2019 M.Sc. in Mathematics at the Free Universiy of Berlin, Germany.\n* 10\/2014 B.Sc. in Mathematics at the Free University of Berlin, Germany. \n\n* From 2013 to 2019 I was a scholar of the Rosa-Luxemburg-Foundation.\n* From 11\/2020 to 08\/2024 I was part of the Research Training Group\nEnergy, Entropy, and Dissipative Dynamics (EDDy).\n\n* I was a (part-time) software engineer during my master\'s.\n\n### Materials\n* I do not list all the conferences that I have attended here.\n* A [poster](https:\/\/www.acom.rwth-aachen.de\/user\/data\/flex\/contacts\/26c29c058eacc06590f4b77b899fa86b\/main-newest.pdf) that I presented at the International Workshop on Moment Methods in Kinetic Theory (MMKT) IV, Karlsruhe, Germany.\n* The [slides](https:\/\/www.acom.rwth-aachen.de\/user\/data\/flex\/contacts\/26c29c058eacc06590f4b77b899fa86b\/presentation.pdf) that I used in a presentation during the 5th International Conference on Computational Engineering (ICCE 2024) in Darmstadt 2024.\n\n### Research Articles \n* [Dispersion in Shallow Moment Equations](https:\/\/link.springer.com\/article\/10.1007\/s42967-023-00325-2) (with Prof. Julia Kowalski and Prof. Manuel Torrilhon)\n* [Spline moment models for the one-dimensional Boltzmann\u2013Bhatnagar\u2013Gross\u2013Krook equation](https:\/\/pubs.aip.org\/aip\/pof\/article\/32\/10\/102009\/1059929\/Spline-moment-models-for-the-one-dimensional) (with Dr. Julian Koellermeier)\n\n','phone':'+49-(0)241-80-98665','object_media':{'main-newest.pdf':{'name':'main-newest.pdf','type':'application\/pdf','size':494398,'path':'main-newest.pdf'},'presentation.pdf':{'name':'presentation.pdf','type':'application\/pdf','size':608426,'path':'presentation.pdf'}}},'79a17b4ef5447e223891fdf2580d8f77':{'published':!0,'active':!0,'image_align':'left','position':'Post-Doc','title':'Dr.','last_name':'Oblapenko','first_name':'Georgii','location':'Rogowski 229','content':'### Research Interests\n* Development of mathematical models for continuum flows with thermochemical non-equilibrium\n* Development of mathematical models for rarefied flows with inelastic collisions\n* Development and application of particle and particle-like methods (DSMC, DVM, photon Monte Carlo)\n* CFD methods for multi-species reacting flows\n* Uncertainty quantification in context of aerothermodynamics\n\n### Short CV\n\n**Work**:\n* **November 2023 \u2013 present:** Post-doc at ACOM, RWTH Aachen.\n* **January 2023 \u2013 September 2023:** Remote scientific consultant, UT Austin, Oden Institute for Computational Engineering and Sciences \/ Department of Department of Aerospace Engineering and Engineering Mechanics.\n* **November 2021 \u2013 October 2023:** Post-doc at German Aerospace Center (DLR), Institute of Aerodynamics and Flowtechnology, Spacecraft Department, G\u00f6ttingen. Research supported by personal fellowship of the Alexander von Humboldt Foundation\n* **July 2018 \u2013 June 2021:** Post-doc, UT Austin, Oden Institute for Computational Engineering and Sciences \/ Department of Department of Aerospace Engineering and Engineering Mechanics.\n* **April 2013 \u2013 December 2017:** Research engineer, Saint-Petersburg State University, Department of Hydroaeromechanics.\n\n**Education**:\n* **2017: PhD** in Physical and Mathematical Sciences, Saint-Petersburg State University, Russia.
\nArea of specialization: mechanics of fluids, gases and plasma.
\nThesis title: Physico-chemical relaxation rates in viscous non-equilibrium gas flows.\n* **2015: M.Sc.** (summa cum laude) in Mechanics and Mathematical Modeling, Saint-Petersburg State University, Russia.
\nArea of specialization: Molecular-kinetic theory of fluids and gases.\n* **2013: B.Sc.** in Mathematics and Mechanics, Saint-Petersburg State University, Russia.\n\n### Publications\n\n**Full publication lists:**\n* [ORCID](https:\/\/orcid.org\/0000-0002-1434-7166)\n* [Google Scholar](https:\/\/scholar.google.com\/citations?user=UMrjBr0AAAAJ&hl=en)\n\n**Selected publications:**\n* Djordji\u0107, V., Oblapenko, G., Pavi\u0107-\u010coli\u0107, M., & Torrilhon, M. (2023). Boltzmann collision operator for polyatomic gases in agreement with experimental data and DSMC method. Continuum Mechanics and Thermodynamics, 35(1), 103-119.\n* Oblapenko, G., Goldstein, D., Varghese, P., & Moore, C. (2022). Hedging direct simulation Monte Carlo bets via event splitting. Journal of Computational Physics, 466, 111390.\n* Oblapenko, G., & Kustova, E. V. (2020). Influence of angular momentum on transport coefficients in rarefied gases. Physica A: Statistical Mechanics and Its Applications, 553, 124673.\n* Oblapenko, G. P. (2018). Calculation of vibrational relaxation times using a kinetic theory approach. The Journal of Physical Chemistry A, 122(50), 9615-9625.\n* Kustova, E. V., & Oblapenko, G. P. (2015). Reaction and internal energy relaxation rates in viscous thermochemically non-equilibrium gas flows. Physics of Fluids, 27(1).\n\n### Teaching:\n* Summer 23\/24: Math II\n* Winter 23\/24: Math I','category':'Post-Docs and PhD Students','priority':1,'image':[],'object_media':[],'email':'oblapenko@acom.rwth-aachen.de'},'87c7948596c5e0fa27595b09960ddcd6':{'published':!0,'active':!0,'image_align':'left','last_name':'Weniger','first_name':'Donat','location':'Rogowski 328c','email':'weniger@acom.rwth-aachen.de','category':'Post-Docs and PhD Students','priority':2,'image':{'user\/data\/flex\/contacts\/show_picture.jpg':{'name':'show_picture.jpg','type':'image\/jpeg','size':14111,'path':'user\/data\/flex\/contacts\/show_picture.jpg'}},'position':'PhD Student','phone':'+49-(0)241-80-98676','object_media':[],'content':'For CV, research interests and publications click [here](https:\/\/www.irtg-mip.rwth-aachen.de\/cms\/irtg-mip\/Ueber-das-IRTG-2379\/Team\/~xrjgi\/Donat-Weniger\/)'},'367c256ca39e95d852427ee2f34d9890':{'published':!0,'active':!0,'image_align':'left','last_name':'Claus','first_name':'Tamme','location':'Rogowski 328d','email':'claus@acom.rwth-aachen.de','content':'
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<\/a>\n\n\n### Research interests\n* [Material Imaging in Electron Probe Microanalysis](\/research\/mathematical-modeling-and-simulation\/electron-microscopy)\n* Deterministic Modeling of Electron Transport (Radiative Transfer)\n* Inverse Problems\n* Adjoint Methods (Algorithmic\/Automatic Differentiation, Continous Adjoints)\n\n### Work with us!\n* We have HiWi-positions, as well as projects for your bachelor- or master-thesis. Your topic will be tailored to your interests! [Here](\/media\/claus_hiwijob_2024_01.pdf)\'s a broad list of ideas\/buzzwords. If you\'re interested, send me a short [email](mailto:claus@acom.rwth-aachen.de) (claus@acom.rwth-aachen.de).\n\n\n### Publications\n* Claus, T., Achuda, G., B\u00fcnger, J., Richter, S., & Torrilhon, M. (2024). _An Adjoint Method for High-Resolution EPMA Based on the Spherical Harmonics (PN) Model of Electron Transport_. Journal of Computational and Theoretical Transport, 1-37. [[doi:10.1080\/23324309.2024.2303508]](https:\/\/doi.org\/10.1080\/23324309.2024.2303508) [[code]](https:\/\/github.com\/tam724\/pnepma)\n* Claus, T., B\u00fcnger, J., & Torrilhon, M. (2021). _A Novel Reconstruction Method to Increase Spatial Resolution in Electron Probe Microanalysis_. Mathematical and Computational Applications, 26(3), 51. [[doi:10.3390\/mca26030051]](https:\/\/doi.org\/10.3390\/mca26030051) [[code]](https:\/\/github.com\/tam724\/m1epma)\n\n### Projects\/Talks\/Posters\n* Lunch Seminar(ACoM) \/ ECCOMAS 2024 \/ IGPM Oberseminar 2025. _Applying Adjoints Twice: An Efficient Gradient Implementation for Models with Linear Structure with Applications in Reconstruction for EPMA_. 2024. [[slides]](https:\/\/tam724.github.io\/Applying-Adjoints-Twice_presentation\/) [[github]](https:\/\/github.com\/tam724\/Applying-Adjoints-Twice_presentation) [[example-code]](https:\/\/github.com\/tam724\/Applying-Adjoints-Twice_Poisson-Example)\n* Lightning Math Night (Fun Talk). _Adjointception or How Integration By Parts Might Help Geologists To X-Ray Stones_. 2024. [[slides]](\/media\/claus_lightning_talks_adjointception_2024.pdf)\n* CSE (Poster Presentation). _Material Imaging in Electron Probe Microanalysis_. 2023. [[poster]](\/media\/claus_cse_mat_imag_epma_poster_2023.pdf)\n* Master Thesis (CES). _Deterministic Reconstruction in Electron Probe Microanalysis using a Flexible Material Parametrization_. Nov 2021 [[thesis]](\/media\/claus_determin_reconstr_2021.pdf) (TODO: upload) [[slides]]()\n* ACoM, Lunch Seminar. _Material Reconstruction in EPMA as a Bayesian Inverse Problem_. Jun 2021 [[slides]](\/media\/claus_mat_imag_bayes_2019_SS_2021_06.pdf)\n* Master Seminar (CES). _Optimization of Sparse Jacobian Chain Products_. SS 2020. [[draft]](\/media\/claus_opti_sparse_jac_chain_2020_SS.pdf) [[slides]](\/media\/claus_opti_spase_jac_chain_presentation_2020_SS.pdf)\n* EMAS (Poster Presentation). _Application of the Adjoint Method in gradient-based Optimization to the M1-Model in EPMA_. 2019. [[poster]](\/media\/claus_emas_poster_2019.pdf) [[presentation]](\/media\/claus_emas_presentation_2019.pdf)\n* Bachelor Thesis (CES). _Application of the Adjoint Method in Gradient-based Optimization to the M1-Model in Electron Beam Microanalysis_. Sep 2018. [[10.18154\/RWTH-2021-04489]](https:\/\/doi.org\/10.18154\/RWTH-2021-04489)\n\n\n### About me\n* Since 04\/2022: PhD Student at ACoM, RWTH Aachen University\n* 10\/2018 - 11\/2021: Master of Science in Computational Engineering Science (CES), RWTH Aachen University\n* 10\/2014 - 10\/2018: Bachelor of Science in Computational Engineering Science (CES), RWTH Aachen University\n','category':'Post-Docs and PhD Students','priority':2,'image':{'user\/data\/flex\/contacts\/tamme.jpeg':{'name':'tamme.jpeg','type':'image\/jpeg','size':62930,'path':'user\/data\/flex\/contacts\/tamme.jpeg'}},'position':'PhD Student','object_media':{'claus_mat_imag_bayes.pdf':{'name':'claus_mat_imag_bayes.pdf','type':'application\/pdf','size':1820194,'path':'claus_mat_imag_bayes.pdf'},'claus_opti_sparse_jac_chain.pdf':{'name':'claus_opti_sparse_jac_chain.pdf','type':'application\/pdf','size':460628,'path':'claus_opti_sparse_jac_chain.pdf'},'claus_opti_spase_jac_chain_presentation.pdf':{'name':'claus_opti_spase_jac_chain_presentation.pdf','type':'application\/pdf','size':383819,'path':'claus_opti_spase_jac_chain_presentation.pdf'},'show_picture.png':{'name':'show_picture.png','type':'image\/png','size':3736328,'path':'show_picture.png'}},'phone':'+49-(0)241-80-98665'},'0687b96cd4110b115e9b664dcb2dda6d':{'published':!0,'active':!0,'image_align':'left','position':'Office and Financial Assistant','last_name':'Krahforst','first_name':'Renate','location':'333','phone':'+49-(0)241-80-98661','email':'office@acom.rwth-aachen.de','category':'Office','image':[],'object_media':[],'content':'.'},'950b7b45580354a2844f0e955142257f':{'published':!0,'active':!0,'image_align':'left','last_name':'Yilmaz','first_name':'Eda','category':'Post-Docs and PhD Students','priority':2,'image':{'newpicture.jpg':{'name':'newpicture.jpg','type':'image\/jpeg','size':859058,'path':'newpicture.jpg'}},'location':'Rogowski 325','email':'yilmaz@acom.rwth-aachen.de','object_media':[],'position':'PhD Student','phone':'+49-(0)241-80-98662','content':'.'},'098433ba2e999f961f32ef94a7d59dbd':{'published':!0,'active':!0,'image_align':'left','position':'Interim Professor','title':'Vertr.-Prof. Dr.','last_name':'Sikstel','first_name':'Aleksey','location':'Rogowski 230','phone':'+49-(0)241-80-98683','email':'aleksey.sikstel@rwth-aachen.de','content':'under construction','category':'Professors','image':[],'object_media':[]},'06328768c0082a4b06b4ff6290daba85':{'published':!0,'active':!0,'image_align':'left','position':'PhD Student','last_name':'Netterdon','first_name':'Lukas','email':'netterdon@acom.rwth-aachen.de','content':'### Research Interests\n\n* Kinetic theory of gases\n* Fokker-Planck method to simulate rarefied gases\n* Probabilistic methods \n\n\n### About me\n\n* 08\/23 - present Ph.D Student at ACoM, RWTH Aachen\n* 4\/21 - 04\/23 Master Studies Computational Engineering Science, RWTH Aachen\n* 10\/17 - 4\/21 Bachelor Studies Computational Engineering Science, RWTH Aachen','category':'Post-Docs and PhD Students','priority':2,'image':{'profilbild.JPG':{'name':'profilbild.JPG','type':'image\/jpeg','size':154042,'path':'profilbild.JPG'}},'object_media':[],'location':'Rogowski 325','phone':'+49-(0)241-80-98662'},'b804155c7de686cbdd422e8a221cb2e3':{'published':!0,'active':!0,'image_align':'left','position':'Post-Doc','title':'Dr.','last_name':'Redle','first_name':'Michael ','location':'Rogowski 325','category':'Post-Docs and PhD Students','image':[],'object_media':[],'email':'redle@acom.rwth-aachen.de','content':'### Research Interests\n* Finite Volume Schemes for Hyperbolic Conservation Laws\n* Structure-Preserving Methods: Well-Balanced Schemes, Divergence-Free Treatment, Asymptotic-Preserving Schemes\n* Astrophysical Simulations: Core-Collapse Supernovae in the Presence of Magnetic Fields\n\n### Education\n* **2023: PhD** in Applied Mathematics, North Carolina State University, United States.
\nThesis title: Structure-Preserving Finite Volume Methods for MHD Systems and Applications\n* **2020: M.Sc.** in Applied Mathematics, North Carolina State University, United States.
\n* **2018: B.Sc. (Hons)** in Mathematics, Oregon State University, United States.\n\n### Publications\n\n* A. Chertock, A. Kurganov, **M. Redle**, and V. Zeitlin
\n[Locally Divergence-Free Well-Balanced Path-Conservative Central-Upwind Schemes for Rotating Shallow Water MHD](https:\/\/doi.org\/10.1016\/j.jcp.2024.113300)
\nJournal of Computational Physics (2024), Paper No. 113300.\n\n* A. Chertock, A. Kurganov, **M. Redle**, and K. Wu
\n[A new locally divergence-free path-conservative central-upwind scheme for ideal and shallow water magnetohydrodynamics](https:\/\/doi.org\/10.1137\/22M1539009)
\nSIAM Journal on Scientific Computing, 46(2024), pp. A1998-A2024.'},'bd2008934e6aa061212af40394389a95':{'published':!0,'active':!0,'image_align':'left','position':'IT Administrator','last_name':'Alizadeh ','first_name':'Saeid','phone':'+49-(0)241-80-98681','email':'alizadeh@acom.rwth-aachen.de','category':'Administration','image':{'user\/data\/flex\/contacts\/1711630690139.jpg':{'name':'1711630690139.jpg','type':'image\/jpeg','size':124779,'path':'user\/data\/flex\/contacts\/1711630690139.jpg'}},'object_media':{'fak07.png':{'name':'fak07.png','type':'image\/png','size':16538,'path':'fak07.png'}},'location':'333','content':'\n\n'},'bef3b4d63be78cb0ff275f54cb379cfc':{'published':!0,'active':!0,'image_align':'left','position':'Visiting PhD Student','last_name':'Hang','first_name':'Song','location':'Rogowski 328b','phone':'+49-(0)241-80-98664','email':'song@acom.rwth-aachen.de','content':'.','category':'Post-Docs and PhD Students','priority':2,'image':{'user\/data\/flex\/contacts\/Song.jpg':{'name':'Song.jpg','type':'image\/jpeg','size':18658,'path':'Song.jpg'}},'object_media':[]},'c1d123083b0217ae1cada3cb8bfe2b29':{'published':!0,'active':!0,'image_align':'left','position':'Post-Doc','last_name':'Singh','first_name':'Satyvir','location':'325','phone':'+49-(0)241-80-98662','email':'singh@acom.rwth-aachen.de','content':'### Research Interest\n\n* High-Order Discontinuous Galerkin Method\n* Computational Fluid Dynamics\n* Hydrodynamic Instability\n* Multi-species Flows\n* Moment Method for Gas Kinetic Theory \n\n### Education\n\n* Ph.D. in Mechanical and Aerospace Engineering, Gyeongsang National University, South Korea.\n* M.Tech. in Industrial Mathematics and Scientific Computing, Indian Institute of Technology Madras, Chennai, India.\n* M.Sc. in Mathematics, Chaudhary Charan Singh University Meerut, India.\n\n### Experiences\n\n* Postdoctoral Fellow, RWTH Aachen University, Germany (9.2022 \u2013 Present).\n* Postdoctoral Fellow, Nanyang Technological University, Singapore (8.2018 \u2013 8.2022).\n* Course Tutor, Nanyang Technological University, Singapore (8.2021 \u2013 11.2021).\n* Postdoctoral Fellow, Gyeongsang National University, South Korea (3.2018 \u2013 7.2018).\n* Visiting Researcher, Northwestern Polytechnical University, Xi\u2019an, China (7.2015 \u2013 8.2015).\n* Assistant Professor, Galgotias College of Eng. & Technology, India (10.2011 \u2013 2.2013).\n* Assistant Professor, IMS Engineering College, Ghaziabad, India (7.2011 \u2013 10.2011).\n* M. Tech. Researcher, Indian Institute of Technology Madras, India (6.2010 \u2013 6.2011).\n\n\n\n### Fellowships and Academic Achievements\n\n* Brain Korea 21 (BK 21+) Scholarship for Ph.D. Program, Govt. of South Korea (2013-2016).\n* GATE Financial HMRD Scholarship for M.Tech. Program, Govt. of India (2009-2011).\n* Qualified Junior Research Fellowship and National Eligibility Test in Mathematical Sciences (2011), A.I.R. - 38.\n* Qualified Graduate Aptitude Test for Engineering in Mathematics (2012), A.I.R. - 244\n\n\n### Recent Journal Publications\n\n* **S. Singh**, H. Song, M. Torrilhon (2024), \u201cModal Discontinuous Galerkin Simulations for Grad\u2019s 13 Moment Equations: Application to Riemann Problem in Continuum-Rarefied Flow Regime\u201d, _Journal of Computational and Theoretical\nTransport_ (Q4).\n* **S. Singh**, D.T. Jalleli (2024), \u201cInvestigation of coupling effect on the evolution of Richtmyer\u2013Meshkov instability at double heavy square bubbles\u201d, _SCIENCE CHINA Physics, Mechanics & Astronomy_ 67(1), 214711 (Q1).\n* **S. Singh**, A.H. Msmali (2023), \u201cOn the spatiotemporal pattern formation in nonlinear coupled reaction - diffusion systems\u201d, _Axioms_ 12(11), 1004 (Q2).\n* **S. Singh** (2023), \u201cInvestigation of aspect ratio effects on flow characteristics and vorticity generation in shock-induced rectangular bubble\u201d, _European Journal of Mechanics \/ B Fluids_, 101, 131-148 (Q1).\n* **S. Singh**, M. Battiato (2023), \u201cInvestigation of shock Mach number effects on the growth of convergent Richtmyer Meshkov instability in a heavy square bubble\u201d, _Physica D: Nonlinear Phenomena_, 453, 133844 (Q1).\n* **S. Singh**, M. Torrilhon (2023), \u201cOn the shock-driven hydrodynamic instability in square and rectangular light gas bubbles: a comparative study from numerical simulations\u201d, _Physics of Fluids_, 35, 012117 (Q1).\n* **S. Singh**, R.C. Mittal, S.R. Thottoli, M. Tamsir (2023), \u201cHigh-fidelity simulations for Turing pattern formation in multi-dimensional Gray-Scott reaction-diffusion system\u201d, _Applied Mathematics and Computation_, 452, 128079 (Q1).\n* A. K. Shukla, M. K. Awasthi, **S. Singh** (2023), \u201cImpact of heat and mass transport on Rayleigh-Taylor instability of Walter\u2019s B viscoelastic fluid layer\u201d, _Microgravity Science and Technology_, 35 (3), 1-11 (Q2).\n* **S. Singh**, M. Battiato (2022), \u201cNumerical simulations of Richtmyer-Meshkov instability of SF6 square bubble in diatomic and polyatomic gases\u201d, _Computers & Fluids_, 242, 105502 (Q1).\n* **S. Singh**, A. Karchani, T. Chourushi, R.S. Myong (2022), \u201cA three-dimensional modal discontinuous Galerkin method for second-order Boltzmann-Curtiss constitutive models of rarefied and microscale gas flows\u201d, _Journal of Computational Physics_, 457, 111052 (Q1).\n','category':'Post-Docs and PhD Students','priority':1,'image':{'user\/data\/flex\/contacts\/photo_2023-09-01_14-01-58.jpg':{'name':'photo_2023-09-01_14-01-58.jpg','type':'image\/jpeg','size':352448,'path':'photo_2023-09-01_14-01-58.jpg'}},'object_media':[],'title':'Dr.'},'c2cdb0ff0e8e5da2d358aacbf19d0ecf':{'published':!0,'active':!0,'image_align':'left','last_name':'Dordic','first_name':'Vladimir','location':'Rogowski 328b','email':'Djordjic@acom.rwth-aachen.de','content':'### Research Interests\n\n* Boltzmann equation for polyatomic gases\n* Wasserstein-closure for moment equations\n* Numerical methods for moment equations systems\n\n\n### About me\n\n* 12\/20 - present Ph.D Student at ACoM, RWTH Aachen University, Aachen, Germany.\n* 10\/18 - 08\/20 Master studies in Applied mathematics , University of Novi Sad, Serbia.\n* 10\/15 - 7\/18 Bachelor studies in Applied mathematics , University of Novi Sad, Serbia. ','category':'Post-Docs and PhD Students','priority':2,'image':{'user\/data\/flex\/contacts\/vladimir.jpg':{'name':'vladimir.jpg','type':'image\/jpeg','size':1234973,'path':'vladimir.jpg'}},'position':'PhD Student','object_media':[]},'d9ff4ff2a9e9ecd83dcf68a74eecae9d':{'published':!0,'image_align':'left','last_name':'Christhuraj','first_name':'Edilbert','location':'Rogowski 328b','phone':'+49-(0)241-80-98664','email':'christhuraj@acom.rwth-aachen.de','content':'Since January 2020 I have been a doctoral student at ACoM. <\/br>\nI am interested in developing computational models for studying non-equilibrium gas flows. \n<\/br>\n[ui-accordion independent=true open=none]\n[ui-accordion-item title="Research Interests"]\n* Mathematical modeling in continuum physics\n* Numerical methods for nonlinear hyperbolic systems\n* Kinetic gas theory, Boltzmann equation, rarefied gases and micro-flows\n[\/ui-accordion-item]\n[ui-accordion-item title="CV"]\n* 2020 - present, Doctoral student at RWTH\n* 2016 - 2019, Master of Science in Simulation Sciences at RWTH\n* 2011 - 2015, Bachelor of Engineering in Mechanical Engineering at Government College of Technology Coimbatore.\n[\/ui-accordion-item]\n[ui-accordion-item title="Publications"]\nA list of my publications can be found under my [ORCid profile](https:\/\/orcid.org\/0009-0005-2632-899X).\n[\/ui-accordion-item]\n[\/ui-accordion]','category':'Post-Docs and PhD Students','priority':2,'image':{'user\/data\/flex\/contacts\/PhotoWithJacket.jpg':{'name':'PhotoWithJacket.jpg','type':'image\/jpeg','size':663897,'path':'PhotoWithJacket.jpg'}},'active':!0,'position':'PhD Student','object_media':[]},'def32165b0ec075c1fe4d02782068430':{'published':!0,'active':!0,'image_align':'left','position':'Post-Doc','title':'Dr.','last_name':'Shan','first_name':'Baochao','location':'Rogowski 228','email':'shan@acom.rwth-aachen.de','category':'Post-Docs and PhD Students','priority':1,'image':{'user\/data\/flex\/contacts\/\u65e5\u672c\u7b7e\u8bc1.jpg':{'name':'\u65e5\u672c\u7b7e\u8bc1.jpg','type':'image\/jpeg','size':96341,'path':'\u65e5\u672c\u7b7e\u8bc1.jpg'}},'object_media':[],'content':'Text'}})