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Dr. rer. nat. Tobias Neckel

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Address:
TU München
Institut für Informatik
Boltzmannstr. 3
85748 Garching b. München
Office:
MI 02.05.055
Email:
Neckelmail.png
Phone:
(089) 289 18 632
Fax:
(089) 289 18 607
Office Hours:
by arrangement

Contents

General

Research

Research Topics

  • Uncertainty Quantification
  • Random Differential Equations
  • Efficient numerical algorithms
  • High performance computing
  • Hierarchic and adaptive methods (octrees/spacetrees, sparse grids)
  • Simulation of incompressible fluid flow
  • Fluid-structure interactions

Research Projects

Publications

Books


Journal & Conference Publications

Volume 2018

Volume 2017

  • D. Jarema, H.-J. Bungartz, T. Görler, F. Jenko, T. Neckel and D. Told: Block-Structured Grids in Full Velocity Space for Eulerian Gyrokinetic Simulations [BibTeX].
    In Computer Physics Communications, Volume 215, p. 49 – 62. Elsevier, 2017.

Volume 2016

Volume 2015

Volume 2014

Volume 2013

Volume 2012

Volume 2011

Volume 2010

Volume 2009

Volume 2008

Volume 2007

  • M. Mehl, M. Brenk, I. L. Muntean, T. Neckel and T. Weinzierl: Benefits of Structured Cartesian Gris for the Simulation of Fluid-Structure Interactions [pdf] [BibTeX].
    In G. Yagawa, V.P. Iu, K. Kashiyama, N. Miyazaki, E. Arantes e Oliveira, S. Valliappan, T. Yabe, M.W. Yuan and S. Yoshimura (ed.), Proceedings of the Third Asian-Pacific Congress on Computational Mechanics, APCOM 07, December 2007. (published electronically, paper 20-2-3).
  • T. Neckel and M. Brenk: A Coupling Environment for Fluid-Structure Interactions on Cartesian Grids [pdf] [BibTeX].
    In 2nd GACM Colloquium on Computational Mechanics, October 2007.
  • M. Brenk, H.-J. Bungartz, M. Mehl, I. L. Muntean, T. Neckel and T. Weinzierl: A coupling environment for fluid-structure interactions on Cartesian grids [BibTeX].
    In P. Bergan, J. Garcia, E. Onate and T. Kvamsdal (ed.), International Conference on Computational Methods in Marine Engineering, June 2007.
  • M. Brenk, H.-J. Bungartz, I. L. Muntean and T. Neckel: Simulating large particle movements in drift ratchets using Cartesian grids [BibTeX].
    In M. Papadrakakis, E. Onate and B. Schrefler (ed.), Int. Conf. on Computational Methods for Coupled Problems in Science and Engineering (COUPLED PROBLEMS 2007), p. 396–399, May 2007.

Volume 2006

  • M. Brenk, H.-J. Bungartz and T. Neckel: Cartesian Discretisations for Fluid-Structure Interaction -- Consistent Forces [BibTeX].
    In P. Wesseling, E. Onate and J. Periaux (ed.), ECCOMAS CFD 2006, European Conference on Computational Fluid Dynamics, September 2006.

Volume 2005

  • T. Neckel and C. Zenger: Cache-Oblivious Solution of the 2d Navier-Stokes Equations [ps] [BibTeX].
    In F. Hülsemann, M. Kowarschik and U. Rüde (ed.), Proceedings of the 18th Symposium Simulationstechnique (ASIM 2005), Volume 15 of Fortschritte in der Simulationstechnik - Frontiers in Simulation, p. 180–185. SCS Publishing House e.V., Erlangen, September 2005.
  • T. Neckel: Einfache 2D-Fluid-Struktur-Wechselwirkungen mit einer cache-optimalen Finite-Element-Methode [pdf] [BibTeX].
    Diplomarbeit, Fakultät für Informatik, Technische Universität München, 2005.

Volume 2003

  • T. Neckel, N. Petit and C. Talbot: Collocation and inversion for a reentry optimal control problem [pdf] [BibTeX].
    In Proc. of the 5th Intern. Conference on Launcher Technology, November 2003.


Book Sections

Volume 2010

Volume 2009

  • I. L. Muntean, M. Mehl, T. Neckel and T. Weinzierl: Concepts for Efficient Flow Solvers Based on Adaptive Cartesian Grids [pdf] [BibTeX].
    In S. Wagner, M. Steinmetz, A. Bode and M. Brehm (ed.), High Performance Computing in Science and Engineering, Garching 2007. Springer, Berlin Heidelberg New York, 2009.

Volume 2008

  • M. Mehl, T. Neckel and T. Weinzierl: Concepts for an Efficient Implementation of Domain Decomposition Approaches for Fluid-Structure Interactions [pdf] [BibTeX].
    In U. Langer, M. Discacciati, D.E. Keyes, O.B. Widlund and W. Zulehner (ed.), Domain Decomposition Methods in Science and Engineering XVII, Volume 60 of Lecture Notes in Science an Enginnering, p. 591–598. Springer, Berlin Heidelberg New York, 2008.

Volume 2006

  • M. Brenk, H.-J. Bungartz, M. Mehl and T. Neckel: Fluid-Structure Interaction on Cartesian Grids: Flow Simulation and Coupling Environment [] [BibTeX].
    In H.-J. Bungartz and M. Schäfer (ed.), Fluid-Structure Interaction - Modelling, Simulation, Optimisation, Volume 53 of LNCSE, p. 233–269. Springer-Verlag, Berlin, Heidelberg, August 2006.


Talks

Volume 2018

  • I.-G. Farcas, T. Goerler, T. Neckel and H.-J. Bungartz: Sensitivity-driven Adaptive Sparse Approximations in Linear Gyrokinetics [BibTeX].
    Sparse Grids and Applications - Munich 2018, Garching, Germany, July 2018.
  • F. Künzner and T. Neckel: Prediction and Reduction of Runtime in UQ Simulations on HPC Systems using Chaospy [BibTeX].
    SIAM Conference on Uncertainty Quantification (SIAM UQ 2018), Garden Grove, California, USA, April 2018.

Volume 2017

  • I.-G. Farcas, J. Latz, E. Ullmann and T. Neckel: Multilevel sparse Leja approximations in Bayesian inversion [BibTeX], Frontiers of Uncertainty Quantification in Engineering (FrontUQ), September 2017.
  • F. Künzner, T. Neckel and H.-J. Bungartz: Reducing runtime of non-intrusive UQ simulations by work package strategies using HPC, chaospy, and mpi4py [BibTeX].
    International Conference on Uncertainty Quantification in Computational Sciences and Engineering (UNCECOMP 2017), Rhodos Island, Greece, June 2017.
  • I.-G. Farcas, T. Neckel and H.-J. Bungartz: Multilevel adaptive sparse grid surrogates for Bayesian inverse problems [BibTeX].
    International Conference on Uncertainty Quantification in Computational Sciences and Engineering, Rhodes Island, Greece, June 2017.
  • I.-G. Farcas, H.-J. Bungartz, T. Neckel and B. Uekermann: Multilevel uncertainty analysis of fluid-structure interaction simulations using adaptive sparse grids [BibTeX].
    International Conference on Finite Elements in Flow Problems, Sapienza-Universita di Roma, Italy, April 2017.
  • T. Neckel: Solving Random Differential Equations with HPC and UQ Techniques [pdf] [BibTeX].
    Computational Mathematics Seminar, Mathematical Sciences Institute, ANU, March 2017.

Volume 2016

  • T. Neckel: Random Ordinary Differential Equations (RODE) [pdf] [BibTeX].
    HIGH TEA @ SCIENCE, GUtech, Oman, March 2016.

Volume 2015

  • T. Neckel: Block-structured grids in gyrokinetic plasma simulation [pdf] [BibTeX].
    CompSE Workshop 2015, Institute for Aerodynamics, RWTH Aachen, December 2015.
  • M. Horsch, S. Werth, C. Niethammer, C. Glass, W. Eckhardt, P. Neumann, H.-J. Bungartz, J. Vrabec, H. Hasse and T. Neckel: Computational Molecular Engineering: An Emerging Technology in Process Engineering [BibTeX].
    SIAM CSE, Salt Lake City, March 2015.
  • T. Neckel: Applying UQ Approaches to Random Ordinary Differential Equations [BibTeX].
    SIAM CSE 2015, Salt Lake City, March 2015.

Volume 2014

  • T. Neckel: RPDE-RODE Reduction for Earthquake-induced Oscillations of Solid Structures [BibTeX].
    10th Conference of the American Institute of Mathematical Sciences, Madrid, July 2014.

Volume 2013

  • T. Neckel: Parallel Incompressible Flow Simulations using Divergence-free Finite Elements [BibTeX].
    Mafelap 2013, Brunel University, UK, June 2013.

Volume 2012

Volume 2011

  • T. Neckel and H.-J. Bungartz: The Bavarian Graduate School of Computational Engineering [BibTeX].
    COME/CSE Graduation Ceremony, TU München, November 2011.
  • T. Neckel: Divergence-Free Elements for Incompressible Flow on Cartesian Grids [pdf] [BibTeX].
    International Conference on Finite Elements in Flow Problems (FEF 2011), München, March 2011.
  • T. Neckel: Experiences Extending the CFD Solver of the PDE Framework Peano [pdf] [BibTeX].
    SIAM CS&E 2011, Reno, USA, March 2011.

Volume 2010

  • T. Neckel: Spatial Discretisation Schemes in the PDE Framework Peano [pdf] [BibTeX].
    ASME International Mechanical Engineering Congress & Exposition (IMECE 2010), Vancouver, Canada, November 2010.
  • T. Neckel: Enhanced divergence-free elements for efficient incompressible flow simulations in the PDE framework Peano [pdf] [BibTeX].
    ECCOMAS CFD 2010, Lisbon, June 2010.

Volume 2009

  • T. Neckel: FEM Simulations of Incompressible Flow using Automatic Differentiation in the PDE Framework Peano [pdf] [BibTeX].
    22nd Chemnitz FEM Symposium 2009, Oberwiesenthal, September 2009.
  • T. Neckel: The PDE Framework Peano: An Environment for Efficient Flow Simulations [BibTeX].
    Rigorosum, Garching, July 2009.
  • T. Neckel: Steady-state Flow Simulations using Exact Jacobians on Cartesian Grids [pdf] [BibTeX].
    1st African Conference on Computational Mechanics (Africomp), Sun City, South Africa, January 2009.

Volume 2008

  • T. Neckel: CFD simulations using an AMR-like approach in the PDE framework Peano [pdf] [BibTeX].
    CFD2008, Tokyo, December 2008.
  • M. Mehl and T. Neckel: Development of New Methods for the Production of Highly-Reactive Polyisobutenes [] [BibTeX], Fakultät für Chemie, TUM, Garching, July 2008.

Volume 2007

  • T. Neckel: FSIce for Fluid-Structure Interactions on Cartesian Grids [pdf] [BibTeX].
    2nd GACM Colloquium on Computational Mechanics, Technische Universität München, October 2007.
  • T. Neckel: Simulating large particle movements in drift ratchets using Cartesian grids [BibTeX].
    ECCOMAS COUPLED PROBLEMS 2007, Santa Eulalia, Ibiza (Spain), May 2007.

Volume 2005

  • T. Neckel: Cache-Oblivious Solution of the 2d Navier-Stokes Equations [BibTeX].
    ASIM 2005, Erlangen, September 2005.


Technical Reports

Volume 2017

Volume 2015


Posters

Volume 2018

  • I.-G. Farcas, T. Goerler, H.-J. Bungartz and T. Neckel: A Dimension-adaptive Sparse Pseudo-Spectral Projection Method in Linear Gyrokinetics [pdf] [BibTeX].
    SIAM Conference on Uncertainty Quantification, Garden Grove, California, USA, April 2018.
  • F. Menhorn, I.-G. Farcas, T. Neckel and H.-J. Bungartz: Multilevel Adaptive$^2$ Sparse Grid Stochastic Collocation [BibTeX].
    SIAM Conference on Uncertainty Quantification, Garden Grove, California, USA, April 2018.
  • I.-G. Farcas, T. Goerler, H.-J. Bungartz and T. Neckel: A Dimension-adaptive Sparse Pseudo-Spectral Projection Method in Linear Gyrokinetics [pdf] [BibTeX].
    Surrogate models for UQ in complex systems, Cambridge, UK, February 2018.
  • I.-G. Farcas, J. Latz, T. Neckel and E. Ullmann: Multilevel Sparse Leja approximation of Bayesian Inverse Problems [BibTeX].
    Surrogate models for UQ in complex systems, Cambridge, UK, February 2018.

Volume 2017

  • I.-G. Farcas, T. Goerler, H.-J. Bungartz and T. Neckel: A Sparse Pseudo-Spectral Projection Method in Linear Gyrokinetics [BibTeX].
    Quantification of Uncertainty: Improving Efficiency and Technology, Trieste, Italy, July 2017.
  • F. Menhorn and T. Neckel: Adaptive Sparse Grid Stochastic Collocation for Random Ordinary Differential Equations [BibTeX].
    SIAM Conference on Computational Science and Engineering, Atlanta, Georgia, USA, March 2017.
  • P.-C. Sarbu, I.-G. Farcas, H.-J. Bungartz, T. Neckel and B. Uekermann: Adaptive Sparse Grids Interpolation Techniques for Multilevel Stochastic Collocation in Fluid-Structure Interaction Problems [BibTeX].
    SIAM Conference on Computational Science and Engineering, Hilton Atlanta, Atlanta, Georgia, USA, March 2017.

Volume 2016

Volume 2015

  • F. Menhorn and T. Neckel: Uncertainty Quantification in Incompressible Flow using Sparse Grids [pdf] [BibTeX].
    SIAM Conference on Computational Science and Engineering, Salt Lake City, Utah, USA, March 2015.

Volume 2013

Volume 2011

  • R. Sangl, M. Lieb, T. Neckel, P. Schoeffel and F. Weyermann: Simulation of Thermohydraulic Phenomena in the PDE Framework Peano [pdf] [BibTeX].
    ASIM Workshop 2011: Trends in CSE, Garching, March 2011.


Students

Volume 2018

  • F. Schnagl: Analysis of the SRT Division Algorithm [BibTeX].
    Bachelor's thesis, Institut für Informatik, April 2018.

Volume 2017

  • F. Menhorn: Derivative-Free Stochastic Constrained Optimization using Gaussian Processes, with Application to a Scramjet [pdf] [BibTeX].
    Master's thesis, Institut für Informatik, Technische Universität München, March 2017.
  • V. Jacht: Verteilte Parallelisierung thermohydraulischer Simulationen in ATHLET mithilfe von PETSc [pdf] [BibTeX].
    Master's thesis, Institut für Informatik, Technische Universität München, March 2017.

Volume 2016

  • S. Krivokapic: Implementation of an HPF5 Interface for the thermo-hydraulics code ATHLET [BibTeX].
    Master's thesis, Institut für Informatik, Technische Universität München, September 2016.

Volume 2015

  • K. Retzer: Numerical Simulation of the Boundary Excited Atmospheric Heat Equation with the RPDE-RODE Reduction Method [pdf] [BibTeX].
    Master's thesis, Fakultät für Mathematik, Technische Universität München, August 2015.

Volume 2014

  • B. Rüth: Implementation of test scenarios for incompressible flow using a divergence-free finite-element approach [pdf] [BibTeX].
    Bachelor's thesis, Department of Informatics, Technical University of Munich, October 2014.
  • C. Ziegner: Development of a benchmark suite for Uncertainty Quantification of laminar flow [pdf] [BibTeX].
    Bachelor's thesis, Institut für Informatik, Technische Universität München, October 2014.
  • F. Menhorn: Uncertainty Quantification in Incompressible Flow using Sparse Grids [pdf] [BibTeX].
    Bachelor's thesis, Institut für Informatik, Technische Universität München, June 2014.

Volume 2013

  • L. Kreschenska: Mathematische Behandlung von Makro-Mikro-Problemstellungen gekoppelter nicht-linearer Dynamischer Systeme [BibTeX].
    Master's thesis, Zentrum Mathematik, Technische Universität München, August 2013. pdf n.a. due to NDA.
  • V. Jacht: Implementation and Benchmarking of Sparse-Matrix Solvers for Two-Phase Flow Applications [pdf] [BibTeX].
    Bachelor's thesis, Institut für Informatik, Technische Universität München, June 2013.
  • N. Warneke: Divergenzfreie Finite-Elemente für die 3D Navier-Stokes Gleichungen auf kartesischen Gittern [pdf] [BibTeX].
    Master's thesis, Fakultät für Mathematik, Technische Universität München, May 2013.

Volume 2012

  • M. Schlick: Design and Implementation of Efficient Free Text Search Algorithms in the DS-2 Framework [pdf] [BibTeX].
    Diplomarbeit, Fakultät für Mathematik, Technische Universität München, December 2012.
  • B. Daqui Herrera: Performance tuning of regular Cartesian grids applied to incompressible flow problems [pdf] [BibTeX].
    Master's thesis, Institut für Informatik, Technische Universität München, July 2012.
  • B. Uekermann: Detached-Eddy Simulation for the parallel Finite Element Framework ALYA [pdf] [BibTeX].
    Diplomarbeit, Technische Universität München, May 2012.

Volume 2011

  • F. Ferstl: Implementierung eines Algorithmus zur Berechnung von Freien Oberflächen in die Fluidlöser-Komponente von Peano [pdf] [BibTeX].
    Studienarbeit/SEP/IDP, Institut für Informatik, Technische Universität München, April 2011.
  • R. Sangl: Simulation of Thermohydraulic Phenomena in the PDE Framework Peano [pdf] [BibTeX].
    Diplomarbeit, Fakultät für Mathematik, Technische Universität München, February 2011.

Volume 2009

  • A. Atanasov: Design und Implementierung eines Computational Steering Frameworks für CFD-Simulationen [pdf] [BibTeX].
    Diplomarbeit, Institut für Informatik, Technische Universität München, August 2009.
  • K. Unterweger: CFD simulations of moving geometries using Cartesian grids [pdf] [BibTeX].
    Diplomarbeit, Institut für Informatik, Technische Universität München, August 2009.
  • A. Okur and J. Schlamp: Erweiterung eines stationären Navier-Stokes-Lösers [pdf] [BibTeX].
    Studienarbeit/SEP/IDP, February 2009.
  • D. Butnaru and V. Petkov: From Research Codes To Production Software Packages (BGCE Honours Project) [BibTeX].
    Studienarbeit/SEP/IDP, Institut für Informatik, Technische Universität München, February 2009.
  • B. Uekermann: Time-implicit ODE Solver for the incompressible Navier-Stokes Equations in Peano [pdf] [BibTeX].
    Studienarbeit/SEP/IDP, Fakultät für Mathematik, Technische Universität München, February 2009.

Volume 2008

  • J. Landthaler: Integration of the PDE framework Peano in the Grid Environment GridSFEA [pdf] [BibTeX].
    Bachelor's thesis, Fakultät für Informatik, Technische Universität München, September 2008.
  • M. Ibrahim: Integration of a Large Eddy Model for Turbulent Flow Simulations into the HPC Framework Peano [pdf] [BibTeX].
    Master's thesis, Fakultät für Informatik, Technische Universität München, September 2008.
  • A. Atanasov: Entwicklung eines tecplot-Visualisierungsinterface für Strömungssimulationsdaten [pdf] [BibTeX].
    Studienarbeit/SEP/IDP, Fakultät für Informatik, Technische Universität München, April 2008.
  • A. Berariu, A. Bocoi, B. Gatzhammer, K. Golab and B. Xin: Parallel Molecule Viewer - ParMolV (BGCE Honours Project) [BibTeX].
    Studienarbeit/SEP/IDP, Institut für Informatik, Technische Universität München, March 2008. BGCE project.

Volume 2007

  • O. Meister and F. Reichl: Implementation of a steady-state Navier-Stokes solver [pdf] [BibTeX].
    Studienarbeit/SEP/IDP, Fakultät für Informatik, Technische Universität München, September 2007.
  • V. Obler: Simulation inkompressibler instationärer Fluide unter Berücksichtigung physikalischer Erhaltungssätze in der Diskretisierung [pdf] [BibTeX].
    Diplomarbeit, Fakultät für Informatik, Technische Universität München, June 2007.

Volume 2006


Teaching

Research Stays Abroad

  • Feb-Apr 2017: Australian National University (ANU), Canberra, group of Prof. Markus Hegland
  • Mar 2016: GUtech, Muscat, Oman, Prof. Florian Rupp
  • Sep-Dec 2008: Tokyo Institute of Technology, Tokyo, group of Prof. T. Aoki
  • Apr-Aug 2003: Centre National d'Etudes Spatiales (C. Talbot) / Ecole des Mines (N. Petit) / Ecole Polytechnique, Paris
  • Sep 2002 - Mar 2003: Ecole Polytechnique, Paris

Links