Presentations given by Kees Vuik

• Chair of the Local Organising Committee of the 11th International Congress on Industrial and Applied Mathematics ( ICIAM 2027)

• I attended the 29th International Conference on Domain Decomposition Methods June 23 - 27, 2025, Politecnico di Milano Milan, Italy.
  The following presentations have been given:
  • A scalable parallel solver for Helmholtz problems
    Cornelis Vuik, Jinqiang Chen, and Vandana Dwarka
  
  
  • Multigrid for Helmholtz revisited: Methods for Indefinite Systems
    Vandana Dwarka
  
  
  • An efficient parallel multilevel deflation method for large-scale Helmholtz problems
    Jinqiang Chen, Vandana Dwarka, and Kees Vuik
  
  
• At the (Burgers Symposium 2025, Program), Lunteren, May 27-28, 2025, the following presentation has been given:
  
  Benchmark simulations: Smoothed Particle Hydrodynamics meets Research Data Management
  Giordano Lipari and Cornelis Vuik
  
  https://zenodo.org/records/15486158


• At SIAM International Meshing Roundtable Workshop 2025 (SIAM IMR25), Fort Worth, Texas, USA, March 3-6, 2025, the following presentation has been given:
  
  Simplified Dense and Coarse Higher-Order Surface Mesh Generation Using Moving Least Squares
  Vijai Kumar Suriyababu, Cornelis Vuik, and Matthias Moller


• I am a keynote speaker at KAUST International Research Conference on Multi-Grid and Multi-Scale Methods in Computational Science, IMG 2025, KAUST University, 3-5 February, 2025, KAUST University, Saudi Arabia.
  
  The following presentation has been given:
  
  Multilevel/Multigrid Solvers for Waves: Resolving Divergence for Indefinite Systems
  Vandana Dwarka and Cornelis Vuik


• I am a speaker at Advanced Solvers for Frequency-Domain Wave Problems and Applications, Tsinghua Sanya International Mathematics Forum (TSIMF), 20-24 January, 2025, Sanya, Hainan Province, China.
  
  During the conference I had the opportunity to have a chat (picture) with Professor Shing-Tung Yau, who is the founder of the Tsinghua Sanya International Mathematics Forum (TSIMF).
  
  The following presentation has been given:
  
  Multilevel Solvers for Waves: Resolving Divergence for Indefinite Systems (abstract)
  Vandana Dwarka and Cornelis Vuik

• At the African Conference for Industrial and Applied Mathematics (ACIAM 2024) , September 30 - October 5 2024, Cape Town, South Africa, the following presentation has been given:
  
  A scalable parallel solver for Helmholtz problems
  Cornelis Vuik, Jinqiang Chen, and Vandana Dwarka


• I am a member of the Organizing Committee Dutch Computational Science conference: DUCOMS day , 12 November 2024, Utrecht.


• I was a keynote speaker at The 10th Seminar on Numerical Analysis and its Applications, 3-4 July 2024 at the University of Tabriz.
  The following presentation has been given:
  
  Scalable solvers for the Helmholtz probem
  Cornelis Vuik, Jinqiang Chen, and Vandana Dwarka


• I attended the International Conference On Preconditioning Techniques For Scientific and Industrial Applications (Preconditioning 2024), June 10 - 12, 2024 Georgia Institute of Technology Atlanta, USA.
  Together with Wil Schilders, I have organised the minisymposium: "Parallel and Machine Learning Preconditioning Methods for Large Linear Systems"
  The following presentations have been given:
  • Matrix-Free Parallel Scalable Multilevel Deflation Preconditioning for the Helmholtz Equation
    Jinqiang Chen, Vandana Dwarka, and Kees Vuik
  
  
  • Towards scalable preconditioners for indefinite systems arising in electromagnetic simulations
    Vandana Dwarka and Kees Vuik
  
  
  • Development of preconditioning techniques for integrated energy systems
    Buu-Van Nguyen and Kees Vuik


• I am an invited speaker at the International Conference on Computations and Data Science (CoDS-2024) , 8-10 March 2024, Department of Mathematics, IIT Roorkee, India.
  The following presentation shall be given:
  
  Scalable solvers for the Helmholtz probem (abstract)
  Jinqiang Chen, Vandana Dwarka, and Cornelis Vuik

• I am a member of the Organizing Committee Dutch Computational Science conference: DUCOMS day , 10 November 2023, Utrecht. At the start of the day I have given the following presentation:
  
  Computational Science NL Cornelis Vuik


• I am a member of the Technical Committee of the High Performance Computing for Exploration, Reservoir Development, and Energy Transition , 6-8 November 2023, Al Khobar, Saudi Arabia the following presentation has been given:
  
  Parallel Matrix-Free Solver for Heterogeneous Time-Harmonic Wave Problems: Multi-Level Deflation Preconditioning with Complex Shifted Laplacian Preconditioner
  Jinqiang Chen, Vandana Dwarka, and Cornelis Vuik


• At the International Congress on Industrial and Applied Mathematics (ICIAM 2023) 20 - 25 Aug 2023, Waseda University, Tokyo, Japan the following presentation has been given:
  
  Parallel scalable solvers for Helmholtz problems
  Cornelis Vuik, Jinqiang Chen, and Vandana Dwarka


• At the SIAM Conference on Computational Science and Engineering (CSE23) February 26 - March 3, 2023 RAI Congress Centre | Amsterdam, The Netherlands the following minisymposia are organised:
  
  
  • Modern Solvers for the Helmholtz and Wave Equations - Part I MS19 and Part II MS54
    
    The following talk has been given:
    
    A Matrix-free parallel two-level-deflation preconditioner for the two-dimensional Helmholtz problems abstract
    Jinqiang Chen, Vandana Dwarka, and Cornelis Vuik
    
    
  • Anderson Acceleration and Its Recent Developments MS322
  
  
  A poster has been presented in poster session PP1:
  
  Pore-Scale Simulation of Hydrogen Transport in Porous Media abstract
  Leila Hashemi, Rainer Helmig, Cornelis Vuik, and Hadi Hajibeygi
  

• At the ICMS@Strathclyde: Solvers for frequency-domain wave problems and applications 20-24 June, 2022, University of Strathclyde, Glasgow, Scotland the following presentation has been given:
  
  Scalable solvers for the Helmholtz probem
  Vandana Dwarka and Cornelis Vuik
  
  Group picture at Loch Lomond


• At the 6th International Conference on Mathematics: An Istanbul Meeting for World Mathematicians (Online) 21-24 June, 2022 the following presentation has been given:
  
  Solving large Integrated Electricity Networks: The Power of Numerical Analysis
  M.E. Kootte and C. Vuik


• At the Finnish Mathematical Days 2022 (Online) Tuesday January 4 - Wednesday January 5, 2022, the following presentation has been given:
  
  From Theory to Practice: Scalable Iterative Solvers for the Helmholtz Equation
  Vandana Dwarka and Cornelis Vuik
  

• I am a member of the Technical Committee of the High Performance Computing and Software for Exploration and Reservoir Development , 6 - 8 December 2021, Online, and Certificate of Appreciation


• At the SIAM Conference on Mathematical & Computational Issues in the Geosciences (GS21) originally scheduled in Milan, Italy but now being held in virtual format, June 21-24, 2021, the following presentations have been given:
  
  
  • Scalable multi-level deflation preconditioning for the highly indefinite Helmholtz equation
    Vandana Dwarka and Cornelis Vuik
  
  
  • Efficient POD-based Deflation methods for the solution of highly heterogeneous porous media
    Gabriela Diaz and Cornelis Vuik
  
  
• At the 20th Copper Mountain Conference On Multigrid Methods (Virtual) Wednesday March 24 - Friday April 2, 2021, the following presentations has been given:
  
  
  • Stand-alone multigrid for Helmholtz revisited: towards convergence using standard components
    Vandana Dwarka and Cornelis
  
  
  • ILUT smoothers for p-multigrid methods in Isogeometric Analysis
    Roel Tielen, Matthias Moller and Cornelis Vuik
  
  
• I am a member of the Organizing Committee of SIAM Conference on Computational Science and Engineering (CSE21) , March 1 - 5, 2021 VIRTUAL CONFERENCE | Originally scheduled in Fort Worth, Texas, U.S.


• Together with Victorita Dolean, Vandana Dwarka, and Ivan G. Graham, we organize minisymposia MS28 and MS116: Scalable Solvers for the Helmholtz Problem


The following presentations have been given:

• Scalable Multi-Level Deflation Preconditioning for the Highly Indefinite Helmholtz Equation
  Vandana Dwarka and Cornelis Vuik


• Stand-Alone Two-Level Multigrid using Higher Order Interpolation for the Helmholtz Equation
  Cornelis Vuik and Vandana Dwarka


• A Particle Generation Algorithm for Meshfree Numerical Methods
  Vijai Kumar Suriyababu, Cornelis Vuik, and Matthias Moller

• I am a member of the Program Committee of The 17th Annual IFIP International Conference on Network and Parallel Computing (NPC 2020) , Zhengzhou, Henan, China , Sept.28-30, 2020


• I am one of the local organizers of the 2020 IEEE PES Innovative Smart Grid Technologies Europe (ISGT-Europe) conference , October 25-28 2020, The Hague, The Netherlands

• The Seventh International Conference on Numerical Algebra and Scientific Computing (NASC 2019) has been held from October 19 till 23, 2019, Nanjing, P.R. China the following presentation shall be given:
  
  POD deflated ICCG for porous media flow problems
  Kees Vuik (invited speaker)


• We have organised the ENUMATH 2019, The European Conference on Numerical Mathematics and Advanced Applications, 30 September - 4 October 2019 at Hotel Zuiderduin in Egmond aan Zee, The Netherlands.
  
  
• I have attended the Parallel Solution Methods for Systems Arising from PDEs Conference, at the Centre International de Rencontres Mathematiques (CIRM), Marseille, France, 16 - 20 September 2019.


• At the International Conference On Preconditioning Techniques For Scientific And Industrial Applications (Preconditioning 2019) has been held from July 1 till 3 2019, Minneapolis, Minnesota, USA, the following minisymposium has been organized:
  
  Preconditioners for Saddle Point Problems
  
  Organizers: Wil Schilders and Kees Vuik
  
  Efficient and robust preconditioners for high Reynolds number laminar flows
  Xin He and Kees Vuik
  
  Furthermore I have given a talk in the minisymposium: Structured preconditioning
  
  Iterative Helmholtz Solvers: Scalability and Accuracy of Helmholtz solvers
  Kees Vuik and Vandana Dwarka


• I have attended the 2019 SPHERIC International Workshop to be held at the University of Exeter, Exeter, UK, June 25 till 27, 2019.


• At the Mathematics and Statistics Seminars and colloquia, May 8, 2019, Department of Mathematics and Statistics at Strathclyde University, Strathclyde, UK the following presentation shall be given:
  
  Deflation with POD vectors for Porous Media Flow
  Kees Vuik, Gabriela B. Diaz Cortes, and Jan Dirk Jansen


• A TU Delft delegation had visited the Beijing Institute of Technology and the State Key Lab for Computational Science and Engineering from the Chinese Academy of Sciences, 1-3 April, 2019, Beijing, PR China. We discussed our dual degree PhD program and further collaboration between these institutes and the TU Delft Institute for Computational Science and Engineering.
  
  At the State Key Lab for Computational Science and Engineering the following presentations has been given:
  
  High Performance Solvers for Partial Differential Equations
  Kees Vuik


• At the SIAM Conference on Computational Science and Engineering, February 25 - March 1, 2019 at Spokane Convention Center, Spokane, Washington, USA the following minisymposium has been organized:
  
  Scalable solvers for the Helmholtz problem
  
  Organizers: Reinhard Nabben and Kees Vuik
  
  

• The conference Mathematics Applied in Transport and Traffic Systems on October 17-19, 2018 is organised by Serge Hoogendoorn, Kees Vuik, Victor Knoop, Duncan van der Heul, Dorine Duives, and Priscilla Hanselaar
  A short general introduction is given on the TU Delft website.


• The 3rd Conference on Isogeometric Analysis and Applications on April 23-27 is organised by Harald van Brummelen, Kees Vuik, Matthias Moller, Clemens Verhoosel and Berna Torun.


• The TU Delft seminar on Theory and Practice of Co-Simulation of Power Systems on April 24 is organised by Domenico Lahaye, Milos Cvetkovic, and Kees Vuik.


• At the 54-th Dutch Mathematical Congress ( NMC) has been held in the Koningshof in Veldhoven, on April 3-4, 2018 the following presentations has been given:
  
  Helping to Make Potatoes Future-Proof With Applied Mathematics
  Kees Vuik, Neil Budko and Fred Vermolen


• At the 15th Copper Mountain Conference on Iterative Methods, 2018, March 25 - March 30, 2018, Copper Mountain, Colorado, USA the following presentations has been given:
  
  
  • Iterative Helmholtz Solvers: Accuracy of iterative Helmholtz solutions
    Cornelis Vuik and Vandana Dwarka
  
  
  • Iterative Helmholtz Solvers: Scalability of deflation-based Helmholtz solvers
    Vandana Dwarka and Cornelis Vuik
  
  
  • Efficient POD-based Deflation methods for the solution of large and ill-conditioned linear systems
    Gabriela B Diaz Cortes, Cornelis Vuik and Jan Dirk Jansen
  
  Here is a photo of the TU Delft delegation.

• Future and Emerging Mathematical Technologies in Europe
  Organizers: Zoltan Horvath, Volker Mehrmann, Wil Schilders, Evgeny Verbitskiy, Kees Vuik
  Lorentz Center International center for scientific workshops
  December 11-15, 2017, Leiden, Netherlands
  
  
• At the 7th International Workshop CoDesign 2017 , October 20-21, 2017, HeFei City, China, the following invited presentation has been given:
  
  High Performance Computing Numerical Linear Algebra
  Kees Vuik
  
  
• At the National eScience Symposium 2017: Science in a Digital World , October 12, 2017, Amsterdam ArenA, Amsterdam, Netherlands the following minisymposium is organised:
  
  Energy Science
  Kees Vuik and Willem van Hage
  
  
• The forty-second Woudschoten Conference on 4-6 October 2017 is organised by Prof. Jaap van der Vegt (chair), Prof. Kees Vuik, Prof. Kees Oosterlee, Martine Anholt (secretariat).
  
  Themes of the conference are:
  1. Eigenvalue problems
  2. Numerical techniques for social media and network problems
  3. Semi-smooth Newton methods


• At the SIAM Conference on Mathematical and Computational Issues in the Geosciences , September 11-14, 2017, Erlangen, Germany
  
  a minisymposium MS34 Krylov-based deflation methods in flow for porous media is organized by: Jan Dirk Jansen, Gabriela Diaz, and Kees Vuik, Delft University of Technology, Netherlands
  
  In this minisymposium the following presentation has been given:
  
  POD-deflation method for highly heterogeneous porous media
  Gabriela Diaz, Kees Vuik, and Jan Dirk Jansen
  
  In minisymposium MS71 Computational methods for flow in subsurface porous media Part II the following presentation has been given:
  
  An implicit SPH multiscale method for porous media flow
  Kees Vuik, Owen Clark, and Alex Lukyanov


• From June 26 till June 30, Kees Vuik was a member of the international review panel of the School of Engineering from the Universidad Catolica de Chile. A press bulletin has appeared.


• At the Householder Symposium XX on Numerical Linear Algebra , June 18-23, 2017 The Inn at Virginia Tech, Blacksburg, Virginia, USA. the following presentation has been given:
  
  The adapted augmented Lagrangian preconditioner for the turbulent incompressible Navier-Stokes equations discretized by a finite volume method
  Kees Vuik, Xin He, and Chris Klaij


• Organising the Kick-off DCSE Event entitled: Future Computing
  Photo's and videos.
  Date: May 23, 2017
  Time: 9:00am - 17:30pm
  Location: Aula Congres Centre Delft
  


• Organising the 4TU.AMI Spring Congress 2017: Mathematics for health
  24 May 2017: WUR, Wageningen


• At the SIAM Conference on Computational Science and Engineering, February 27-March 3, 2017, in Atlanta, Georgia, USA the following presentation has been given:
  
  Robust and Fast Preconditioners for Porous Media Flow
  Kees Vuik, Gabriela Diaz, and Jan Dirk Jansen


• At the Kolloquium der Arbeitsgruppe Modellierung, Numerik, Differentialgleichungen January 17, 2017, Technical University Berlin, Germany the following presentation has been given:
  
  Deflation with POD vectors for Porous Media Flow ( Abstract)
  Kees Vuik, Gabriela B. Diaz Cortes, and Jan Dirk Jansen

• At the Models, Simulation, Optimization: Mathematical Technologies for Industrial Innovation in Europe December 19 - 21, 2016, Palazzina della Auditorio, via della Lungara 230, Rome, Italy, organized by EU-MATHS-IN the following presentation has been given:
  
  Boosting Productivity of an Alumina Cement Plant through Computational Fluid Dynamics
  Michele Pisaroni (EPFL Lausanne), Miguel Romero (BASF Frankfurt), Rudy Sadi (Almatis Rotterdam), Domenico Lahaye (DIAM TU Delft) and Kees Vuik (DIAM TU Delft)


• At the Euro-Par 2016, 22nd International European Conference on Parallel and Distributed Computing, Grenoble, France, August 24-26 the following presentation has been given:
  
  Acceleration of Turbomachinery steady CFD Simulations on GPU
  Mohamed H. Aissa, Tom Verstraete, and Cornelis Vuik


• Co-chair of the 15th European Conference on the Mathematics of Oil Recovery (ECMOR XV) , 29 August to 1 September, 2016, Amsterdam, Netherlands.


• Teacher of the subject: Krylov subspace solvers and preconditioners, during the CEMRACS 2016 Summer School Numerical challenges in parallel scientific computing July 18th - August 26th, 2016, Centre International de Rencontres Mathematiques (CIRM), Marseille, France


• At the Schlumberger EUREKA Fluid Mechanics Workshop July 13 2016 Schlumberger-Doll Research Center, Cambridge, MA, USA the following presentation has been given:
  
  Physics-based preconditioners for large-scale subsurface flow simulations
  Kees Vuik


• At the SIAM Annual Meeting 2016, July 11-15, 2016, Boston, MA, USA a minisymposium Generalized Meshless Multiscale Modeling of Complex Media is organized by: Alexander Lukyanov, Schlumberger-Doll Research, USA Marc Alexander Schweitzer, Universitat Bonn, Germany, and Kees Vuik, Delft University of Technology, Netherlands


• Organiser of the NDNS+ workshop 2016 , July 4 - 5, 2016, University of Twente, Netherlands.
  
  The following presentation has been given:
  
  Fast and robust solvers for Helmholtz problems
  Kees Vuik


• At the InterTU studiedag TU Delft, Delft, Netherlands, June 24, 2016 the following presentation has been given:
  
  Modellering in het onderwijs
  Kees Vuik and Marleen Keijzer


• At the The mathematics of future energy systems CWI, Amsterdam, Netherlands, June 6, 2016 the following presentation has been given:
  
  Numerical Methods for Power Networks
  Kees Vuik


• At the 14th Copper Mountain Conference on Iterative Methods, 2016, March 20 - March 25, 2016, 2016, Copper Mountain, Colorado, USA the following presentation has been given:
  
  Physics-based preconditioners for large-scale subsurface flow simulation
  Kees Vuik


• Organiser of the COSSE Workshop 2016 Computation and Energy, February 15 - 18, 2016, Delft University of Technology, Netherlands

• At the Kolloquium der Arbeitsgruppe Modellierung, Numerik, Differentialgleichungen November 17, 2015, Technical University Berlin, Germany the following presentation has been given:
  
  Coupled preconditioners for the Incompressible Navier Stokes Equations ( Abstract)
  Kees Vuik, Xin He, and Chris Klaij


• At the Lunch Seminar Series , at Deltares Delft, September 17, 2015 the following presentation has been given:
  
  Robust and Fast Solvers for Partial Differential Equations
  Kees Vuik


• At the Inverse Problems Seminar Series , at University College London, UCL Centre for Inverse Problems, London, UK, July 17, 2015 the following presentation has been given:
  
  Multi-level Krylov: the next generation Helmholtz solver
  Kees Vuik


• At the SIAM Conference on Mathematical and Computational Issues in the Geosciences 2015, June 29 - July 2, 2015 Stanford University Stanford, California USA a minisymposium Meshless Methods in Geoscience is organized by: Kees Vuik, and Alexandr Lukyanov


• International Conference On Preconditioning Techniques For Scientific And Industrial Applications (Preconditioning 2015) has been held from June 17 till 19 2015, Eindhoven, The Netherlands
  I am a Conference chair of Preconditioning 2015 (flyer).
  
  The following presentations has been given:
  
  Coupled preconditioners for the Incompressible Navier Stokes Equations
  Kees Vuik, Xin He, and Chris Klaij
  
  and
  
  Deflating the Shifted Laplacian for the Helmholtz Equation: Fourier Analysis and Numerical Results
  A.H. Sheikh, D. Lahaye and C. Vuik


• At the Recent Developments in Fast Helmholtz Solvers Delft, May 18, 2015 the following presentation has been given:
  
  Multi-level Krylov: the next generation Helmholtz solver
  Kees Vuik


• At the SIAM Conference on Computational Science and Engineering, March 14-18, 2015, in Salt Lake City, Utah, USA the following presentation has been given:
  
  A Parallel Linear Solver Exploiting the Physical Properties of the Underlying Mechanical Problem
  Kees Vuik

• The Fifth International Conference on Numerical Algebra and Scientific Computing (NASC 2014) has been held from October 25 till 29, 2014, Shanghai, P.R. China the following presentation has been given:
  
  Fast and robust preconditioners for the incompressible Navier-Stokes equations
  Kees Vuik (invited speaker)


• At the meeting Taking the Lead with Computational Speed , October 7, KIVI meeting centre, Prinsessegracht 23, Den Haag the following presentation has been given:
  
  Modern Computing
  Kees Vuik


• At the Applied Maths Research Seminars , November 6, 2014, School of Mathematics, University of East Anglia , Norwich, UK, the following presentation has been given:
  
  A fast solver for the Navier-Stokes equations
  Kees Vuik


• At the SPE Large Scale Computing and Big Data Challenges in Reservoir Simulation Conference and Exhibition on 15 - 17 September 2014 Istanbul, Turkey we are organising the minisymposium:
  
  Scalable Solvers for Linear and Nonlinear Systems
  organisers: Kees Vuik, Klaus Stueben, Knut-Andreas Lie, and Arthur Moncorge


• The Optimization and Inverse Problems in Electromagnetism OIPE 2014 is organised in Delft from September 12 till September 14, 2014. I am a member of Local Organising Committee.


• The 1st International conference on Ageing of Materials and Structures (AMS'14) is organised in Delft from May 26 - till May 28, 2014. I am a member of the National Scientific Committee.


• At the Oberwolfach 2014 meeting Schnelle Loser fur Partielle Differentialgleichungen , May 11 - 17, Mathematisches Forschungsinstitut Oberwolfach , Oberwolfach, Germany the following presentation has been given:
  
  Fast Multilevel Methods for the Helmholtz Equation
  Kees Vuik


• At the GPU Technology Conference (GTC) 2014 March 24-27, 2014, San Jose, California the following presentation has been given:
  
  Fast Solvers for Linear Systems on the GPU ( slides, and a picture of breakfast with Jen-Hsun Huang, CEO of NVIDIA)
  Kees Vuik


• At the Nationale Wiskunde Dagen January 31st till February 1st, 2014, Noordwijkerhout, the following presentation has been given:
  
  Ontwerpen van snelle schepen (abstract, slides)
  Kees Vuik


• The Study Group Mathematics with Industry has been held from January 27th until January 31st, 2014, at the Technical University of Delft. To obtain an impression of the week I refer to the video.

• At the Innovation & Technology Conference organised by the 3TU.Federation, December 6, Eindhoven the following presentation has been given:
  
  Ship Simulator ( pdf file )
  Kees Vuik


• I am a member of the technical papers committee (TPC) of Supercomputing Conference 2013 (SC13), Denver, Colorado, USA, November 17-22, 2013.


• I attended the INT13 An integral approach to electromagnetic scattering: A Workshop on Recent developments in Theory and Applications NLR, Amsterdam, November 12, 2013.


• At the Colloquia & Joint Seminars of the Computational Mathematics Department of the University of Waterloo, November 4, 2013 the following presentation has been given:
  
  Fast and Robust iterative solvers for the Helmholtz equation
  Kees Vuik


• At the International Conference On Preconditioning Techniques For Scientific And Industrial Applications 19-21 June 2013 Oxford, UK the following presentation has been given:
  
  Fast and robust ILU preconditioners on the GPU
  Kees Vuik


• In the Weizmann Workshop 2013 on Multilevel Computational Methods and Optimization, April 30 - May 2 2013, at the Weizmann Institute of Science, Rehovot, Israel, the following (invited) presentation has been given:
  
  Deflation type methods combined with shifted Laplace preconditioners for the Helmholtz equation
  Kees Vuik, Abdul Sheikh, and Domenico Lahaye


• At the 3TU meeting on E-learning, March 21, 2013, the following presentation has been given:
  
  E-Learning in University Math-Education: Experience and Perspectives in the Use of the Teaching and Learning Environment
  Kees Vuik


• At the SIAM Conference on Computational Science and Engineering, February 25-March 1, 2013, in Boston, Massachusetts, USA the following presentation has been given:
  
  Performance of SIMPLE-type Preconditioners in CFD Applications for Maritime Industry
  Chris Klay and Kees Vuik
  
  This talk is presented in the minisymposium:
  
  Preconditioners for the Incompressible Navier Stokes equations
  Organizers: Michele Benzi and Kees Vuik


• At the Kolloquium der Arbeitsgruppe Modellierung, Numerik, Differentialgleichungen January 15, 2013, Technical University Berlin, Germany the following presentation has been given:
  
  An efficient and robust Krylov method for Discontinuous Galerkin problems ( Abstract)
  Kees Vuik and Paulien van Slingerland

• The Thirty-seventh Woudschoten Conference on 3-5 October 2012 is organised by Prof. Kees Vuik (chair) Prof. Kees Oosterlee, Prof. Dirk Roose, Prof. Arthur Veldman Drs. Margreet Nool (secretary).
  
  Themes of the conference are: Adjoint methods and optimization and From particles to continuum models


• At the Mathematical Methods in Fluid Dynamics and Simulation of Giant Oil and Gas Reservoirs on 3 - 5 September 2012 Istanbul, Turkey we are organising the minisymposium:
  
  HPC trends and Fast Solution Methods (Linear and Nonlinear)
  organisers: David Keyes and Kees Vuik
  
  Furthermore the following presentation has been given:
  
  Fast and robust solvers for pressure systems on the GPU
  Kees Vuik


• At the ICCAM 2012 - International Congress on Computational and Applied Mathematics June 9-13, Gent, Belgium the following invited presentation has been given:
  
  An efficient and robust Krylov method for Discontinuous Galerkin problems
  Kees Vuik


• At the 2012 SIAM Conference on Applied Linear Algebra June 18th-22nd, Valencia, Spain the following presentation has been given:
  
  Robust and parallel preconditioners for mechanical problems
  Kees Vuik


• At the Werkgemeenschap Scientific Computing Spring meeting May 11-th, 2012, University of Antwerp, Antwerp, Belgium the following invited presentation has been given:
  
  A decade of fast and robust Helmholtz solvers
  Kees Vuik


• The Recent developments in the solution of indefinite systems workshop on April 17, 2012 is organised by Prof. Wil Schilders, Prof. Kees Vuik, and Dr. Mike Botchev. For details see the following webpage.


• At the Numerical Linear Algebra - Algorithms, Applications, and Training Delft, The Netherlands April 10-13, 2012 the following presentation has been given:
  
  Recursively Deflated PCG for mechanical problems
  Kees Vuik


• At the 12th Copper Mountain Conference on Iterative Methods, 2012, 25 March - 30 March, 2012, 2012, Copper Mountain, Colorado, USA the following presentation has been given:
  
  On the Convergence of Shifted Laplace Preconditioner Combined with Multigrid Deflation for the Helmholtz equation
  Kees Vuik

• At the International Conference on Mathematical Modeling in Industry November 30th - December 2nd, 2011, University of Sao Paulo, Sao Paulo, Brazil the following presentations had been given:
  
  Fast solvers for seismic problems
  Kees Vuik
  
  and
  
  Mathematics and Industry
  Kees Vuik


• At the ESF OPTPDE Workshop: Fast Solvers for Simulation, Inversion, and Control of Wave Propagation Problems September 26-28, 2011, University Wurzburg, Wurzburg, Germany the following presentation has been given:
  
  Analysis of the multi-level, shifted Laplace preconditioned method for the Helmholtz equation
  Kees Vuik


• At the Householder Symposium XVIII on Numerical Linear Algebra , June 12-17, 2011, at the Granlibakken Conference Center & Lodge in Tahoe City, California, on the northwest shore of Lake Tahoe the following presentation has been given:
  
  Recursively Deflated PCG for mechanical problems
  Kees Vuik


• At the Oberwolfach meeting Schnelle Loser fur Partielle Differentialgleichungen , May 22nd - May 28th, Mathematisches Forschungsinstitut Oberwolfach , Oberwolfach, Germany the following presentation has been given:
  
  A comparison of two-level preconditioners based on multigrid and deflation
  Kees Vuik, Jok Tang, Scott MacLachlan, and Reinhard Nabben



• On May 26,2011 the Delft Centre for Computational Science and Engineering organizes the Discontinuous Galerkin Methods in Computational Electromagnetics: A Workshop on Recent developments in Theory and Applications.



• At the International Conference On Preconditioning Techniques For Scientific And Industrial Applications , May 16-18, 2011 Bordeaux, France the following presentation has been given:
  
  A fast GPU Implementation of the Deflated Preconditioned Conjugate Gradient method
  
  Kees Vuik, Rohit Gupta and Kees Lemmens

• On November 4, 2010, the Delft Centre for Computational Science and Engineering organizes the First Dutch OpenFOAM Day.
  
  
• The Thirty-fifth Woudschoten Conference on 6-8 October 2010 is organised by Prof. Arthur Veldman (chair), Prof. Rob Bisseling, Prof. Kees Vuik, Prof. Barry Koren, Drs. Margreet Nool (secretary).
  
  Themes of the conference are: Parallel numerical linear algebra and Immersed boundary methods and Cartesian grids.
  
  
• At the Fifth European Conference on Computational Fluid Dynamics, ECCOMAS CFD 2010, June 14th - 17th, 2010, Lisbon, Portugal
  
  a minisymposium Iterative methods for incompressible flows is organized by: Kees Vuik, and Michele Benzi
  
  The following presentation has been given:
  
  Preconditioned Krylov methods for the incompressible Navier Stokes equations
  
  
• At the IV European Congress on Computational Mechanics (ECCM IV): Solids, Structures and Coupled Problems in Engineering to be held at Palais des Congrès in Paris (France) on 16-21 May 2010
  
  a minisymposium Preconditioned iterative methods for mechanical contact problems is organized by: C. Vuik, T.A. Laursen, and A. Scarpas
  
  The following presentations has been given:
  
  A parallel Deflated Preconditioned Conjugate Gradient method for the finite element analysis of composite materials
  
  by Martin van Gijzen, Tom Jonsthovel, Cornelis Vuik, Tom Scarpas
  
  Fast iterative methods for mechanical problems with interfaces
  
  by Kees Vuik, T.B. Johnsthovel, and Martin van Gijzen
  
  
• Opening Symposium 3TU Applied Mathematics Institute April 15, 2010, TU Delft, Aula Congress Centre, Auditorium
  
  

• At the Kolloquium der Arbeitsgruppe Modellierung, Numerik, Differentialgleichungen December 15, 2009, Technical University Berlin, Germany the following presentation has been given:
  
  Accuracy Enhancement and Filtering for Visualisation of Discontinuous Solutions
  Kees Vuik
  
  
• At the 62nd Annual Meeting of the American Physical Society's Division of Fluid Dynamics (DFD) November 22nd to 24th, 2009 Minneapolis, Minnesota the following presentation has been given:
  
  Preconditioners for incompressible flows
  Kees Vuik
  
  
• During November 17-21, 2009 I have visited the Burgers Program for Fluid Dynamics, University of Maryland, College Park. The following invited presentation has been given during the Sixth Annual Symposium of the Burgers Program for Fluid Dynamics:
  
  Preconditioners for incompressible flows
  Kees Vuik
  
  
• At the 2009 International Conference on Preconditioning Techniques for Large Sparse Matrix Problems, August 24-26, 2009, Hong Kong the following invited presentation has been given:
  
  Preconditioners for the incompressible Navier-Stokes equations
  Kees Vuik
  
  
• At the SIAM Conference on Computational Science and Engineering, March 2-6, 2009 at Miami Hilton Hotel, Miami, Florida the following presentation has been given:
  
  Various ways to use a second level preconditioner
  Kees Vuik
  
  
• At the seminar of the Laboratory of Computational Engineering, EPFL Lausanne, January 8, 2009, the following presentation has been given:
  
  A comparison of preconditioners for incompressible flows
  Kees Vuik

• At the Kolloquium der Arbeitsgruppe Modellierung, Numerik, Differentialgleichungen November 18, 2008, Technical University Berlin, Germany the following presentation has been given:
  
  SIMPLE-type preconditioners for the Oseen problem
  Kees Vuik
  
  
• Advances in Contact Mechanics: a tribute to Prof. J.J. Kalker is organised at the TU Delft from 22 to 24 October 2008. On October 23 the following presentation has been given:
  
  Linear solvers for large algebraic systems from structural mechanics
  Kees Vuik
  
  
• The Delft Centre for Computational Science and Engineering is organising the DCSE Customer Day on September 19, 2008.
  
  
• At the 5th. European Congress on Computational Methods in Applied Sciences and Engineering (ECCOMAS 2008) Venice, Italy, 30 June - 4 July 2008 the following presentations has been given:
  
  On the choice of abstract projection vectors for second level preconditioners
  C. Vuik, J.M. Tang, and R. Nabben
  
  This talk is presented in the minisymposium: Second level preconditioners for Krylov subspace methods Organizers: R. Nabben, TU Berlin and C. Vuik, TU Delft
  
  and
  
  A comparison of preconditioners for industrial incompressible flows
  C. Vuik, M. ur Rehman, and A. Segal
  
  This talk is presented in the minisymposium: Iterative solvers for the incompressible Navier Stokes equations Organizers: M. Benzi, Emory University and C. Vuik, TU Delft
  
  
• At the Modelling and Measuring of Multi-phase Flow Phenomena in Micro-fluidic and Thin-film Systems, Lorentz Centre, Leiden University, June 19, 2008 the following presentation has been given:
  
  A fast and robust solver for multi-phase flow
  Kees Vuik and Jok Tang
  
  
• At the Householder Symposium XVII Zeuthen, Germany, June 1-6, 2008 the following presentation has been given:
  
  On complex shifted Laplace preconditioners for the vector Helmholtz equation
  Kees Vuik
  
  
• At the NWO Bessensap Nemo, Amsterdam, May 26, 2008 the following presentation has been given:
  
  Bacteria build dikes (in Dutch: Dijken bouwen door poepende bacterien)
  (slides and talk )
  Kees Vuik
  
  This presentation is based on the master thesis of Miranda van Rossum
  
  
• At the 9th IMACS International Symposium on Iterative Methods in Scientific Computing March 17-20, 2008 Lille, France the following presentations has been given:
  
  Deflation acceleration of block ILU preconditioned Krylov methods
  Kees Vuik
  
  This talk is part of the workshop Preconditioning techniques in domain decomposition
  
  and
  
  On iterative solvers combined with projected Newton methods for reacting flow problems ( sih4.avi and surface.avi and )
  Kees Vuik, Sander van Veldhuizen, and Chris Kleijn
  
  

• At the Seminar für Analysis und Numerik Universitat Basel, December 7, 2007, Basel, Switzerland the following presentation has been given:
  
  Spectral analysis of complex shifted-Laplace preconditioners for the Helmholtz equation
  Kees Vuik
  
  
• At the Kolloquium der Arbeitsgruppe Modellierung, Numerik, Differentialgleichungen November 28, 2007, Technical University Berlin, Germany the following presentation has been given:
  
  Implicit time integration methods and inexact Newton methods: application to chemical vapor deposition Projection acceleration of Krylov solvers
  Kees Vuik
  
  
• At the 6th International Congress on Industrial and Applied Mathematics July 16-20, 2007 at Zurich Switzerland, the following presentation has been given:
  
  Projection acceleration of Krylov solvers
  Kees Vuik
  
  
• At the SIAM Conference on Mathematical and Computational Issues in the Geosciences, March 19-22, 2007 at Hilton of Santa Fe, Santa Fe, New Mexico, the following presentation has been given:
  
  Deflation acceleration of ICCG for porous media flow
  Kees Vuik, Reinhard Nabben and Jok Tang
  
  This talk is presented in the minisymposium:
  
  Domain-based and Krylov-based Deflation Methods for Flow in Porous Media
  Organizers: Mary Wheeler, Hector Klie and Kees Vuik
  
  All the talks are available.
  
  
• At the SIAM Conference on Computational Science and Engineering, February 19-23, 2007 at Hilton Orange County/Costa Mesa in Costa Mesa, California, the following presentation has been given:
  Comparing incompressible flow preconditioners with IFISS
  Kees Vuik, Mehfooz ur Rehman, and Guus Segal
  
  This talk is presented in the minisymposium:
  
  Incompressible Flow Solvers in MATLAB/COMSOL
  Organizers: Kees Vuik and Andy Wathen.
  
  

• A number of minisymposia are organised at the ECCOMAS CFD 2006, European Conference on Computational Fluid Dynamics September 5-8, 2006 Egmond aan Zee, The Netherlands
  
  
• At the workshop of Computation of flow and transport in heterogeneous media , Bath Institute for Complex Systems University of Bath, United Kingdom 19th and 20th June 2006 the following presentation has been given:
  Deflation acceleration of the PCG method applied to porous media flow
  C. Vuik
  
  
• At the NINTH COPPER MOUNTAIN CONFERENCE ON ITERATIVE METHODS, April 2-7, 2006, USA the following presentation has been given:
  Complex shifted-Laplace preconditioners for the Helmholtz equation
  C. Vuik, Y.A. Erlangga, C.W. Oosterlee and M.B. van Gijzen
  
  

• At the 8th European Multigrid Conference September 27-30, 2005 Scheveningen The Hague, The Netherlands, the following presentation has been given:
  Deflation acceleration for a domain decomposition preconditioner
  C. Vuik and R. Nabben,
  
  
• At the Model order reduction, coupled problems and optimization September 19-23, 2005 Lorentz Center, Leiden University, Leiden, The Netherlands, the following presentation has been given:
  Deflation acceleration for CFD problems
  C. Vuik,
  
  
• At the International Conference on Computational Science 2005 (ICCS 2005) May 22-25, 2005 Emory University Atlanta, Georgia, U.S.A. the following presentation has been given:
  The deflation accelerated Schwarz method for CFD
  J. Verkaik, C. Vuik, B.D. Paarhuis and A. Twerda
  
  
• At the 2005 International Conference On Preconditioning Techniques For Large Sparse Matrix Problems In Scientific And Industrial Applications May 19-21, 2005 Emory University Atlanta, Georgia, U.S.A. the following presentation has been given:
  Efficient preconditioners for the Helmholtz equations
  C. Vuik, Y.A. Erlangga, and C.W. Oosterlee
  
  
• At the Delft Centre for Computational Science and Engineering Symposium , April 8, 2005, Delft, The Netherlands the following presentation has been given:
  Efficient preconditioners for the Helmholtz equations
  C. Vuik, Y.A. Erlangga and C.W. Oosterlee
  
  

• We have organised the workshop Frequency domain modelling of 3D wave propagation in inhomogeneous media, September 24, 2004, Delft, The Netherlands
  
  
• At the INTERPHASE 2004 Numerical Methods for Free Boundary Problems , September 13 - 16, 2004, Rome, Italy the following presentation has been given:
  The Level Set Method for solid-solid phase transformations
  E. Javierre Perez, C. Vuik, A. Segal, F. Vermolen and S. van der Zwaag
  
  
• At the EIGHTH COPPER MOUNTAIN CONFERENCE ON ITERATIVE METHODS, March 28-April 2, 2004, USA the following presentation has been given:
  Deflation acceleration of the preconditioned Conjugate Gradient method
  C. Vuik, R. Nabben and J. Verkaik
  
  

• At the FOM meeting on Condensed Matter Physics, Veldhoven 2003, the following poster has been presented:
  Network modelling of liquid metal transport in solidifying aluminium alloys
  W.O. Dijkstra, C. Vuik, A.J. Dammers and L. Katgerman
  
  
• At ENUMATH 2003, The European Conference on Numerical Mathematics and Advanced Applications, August 18-22, 2003, Prague, Czech Republic, the following presentation has been given:
  ''Shifted Laplace'' preconditioners for the Helmholtz equations
  C. Vuik, Y.A. Erlangga, and C.W. Oosterlee
  
  
• At the Sparse Days and Grid Computing at St. Girons, St. Girons, France, June 10-13, 2003 the following presentation has been given:
  A parallel deflated Krylov solver for finite element problems
  Kees Vuik, Guus Segal and Fred Vermolen
  
  
• At the FOM meeting 2003 the following poster has been presented:
  Solidifying Aluminium Alloys
  W.O. Dijkstra, C. Vuik and L. Katgerman
  
  

• At the indefinite symphony: a 1-day workshop on preconditioning methods for indefinite linear systems , Eindhoven, The Netherlands, December 9, 2002 the following presentation has been given:
  Preconditioned Krylov methods for the incompressible Navier Stokes equations
  C. Vuik and C. Li
  
  
• At the Kick-off meeting NWO Program Computational Science, CWI Amsterdam, November 29, 2002, the following poster has been presented:
  Modeling of multi-phase flows with a Level-Set method
  S. van der Pijl, G. Segal, C. Vuik and P. Wesseling
  
  
• At the Conference on Preconditioning methods for optimal control and constrained optimization problems PMOCCO 2002 , Nijmegen, The Netherlands, October 23-25, 2002 the following presentation has been given:
  Preconditioned Krylov methods for incompressible flow problems
  C. Vuik
  
  
• At the Woudschoten Conferentie van Numeriek Wiskundigen , 2002 Zeist, The Netherlands, September 25 - 27, 2002 the following presentation has been given:
  Deflated Krylov Acceleration of the Schwarz Domain Decomposition Method
  C. Vuik, A. Segal, F. Vermolen and J. Frank
  
  
• At the GAMM Workshop Numerical Linear Algebra with special emphasis on Multilevel and Krylov Subspace Methods , September 13-14, 2002, University of Bielefeld, Germany the following presentation has been given:
  Deflated Krylov Acceleration of the Schwarz Domain Decomposition Method
  C. Vuik, A. Segal and F. Vermolen
  
  
• At the Householder Symposium XV, 2002 Peebles, Scotland, June 17th - 21st, 2002 the following presentation has been given:
  Deflated Krylov Acceleration of the Schwarz Domain Decomposition Method
  C. Vuik, A. Segal and F. Vermolen
  
  
• At the Applied Mathematics for Industrial Flow Problems Conference Lisbon, Portugal, April 17-20, 2002 the following presentation has been given:
  The Krylov accelerated SIMPLER method for incompressible flow problems
  C. Vuik and A. Saghir
  
  
• At the CG50 Conference: Iterative Solvers for Large Linear Systems ETH Zurich, Switzerland, 18 - 21 February, 2002 the following presentation has been given:
  On lumped ILU preconditioners
  C. Vuik and A. Segal
  
  

• At the Burgers center meeting 11 January 2001 the following poster has been presented:
  Efficient Computation of Flow with Cavitation with Compressible Pressure Correction (pdf file)
  D.R. van der Heul, C. Vuik, P. Wesseling
  
  

• At the NIMR meeting 13, 14 december 2000 the following poster has been presented:
  Numerical methods to model solid-solid phase transformations in Aluminium alloys
  W. van Til, C. Vuik, S. van der Zwaag
  
  

• At the 1999 International Conference on Preconditioning Techniques for Large Sparse Matrix Problems in Industrial Applications June 10-12, 1999 the following poster has been presented:
  The Construction of Projection Vectors for a Deflated ICCG Method used in Problems with a Layered Structure
  C. Vuik, A. Segal, J.A. Meijerink, G.T. Wijma
  
  Report related to this poster is: C. Vuik and A. Segal and J.A. Meijerink, ( bibtex item)
  An efficient preconditioned CG method for the solution of layered problems with extreme contrasts in the coefficients
  Faculty of Technical Mathematics and Informatics
  Delft University of Technology, 1998
  TUD Report 98-20.
  
  

• At the Workshop Iterative Methods ILAY 95-96 held at CERFACS, Toulouse, France, 10-13 June 1996 the following poster has been presented:
  A preconditioned Krylov subspace method for least squares problems
  C. Vuik
  
  Papers related to this poster are: Kees Vuik, Agur G.J. Sevink, Gerard C. Herman
  A preconditioned Krylov subspace method for the solution of least squares problems in inverse scattering
  J. Comp. Phys., 123, pp. 330-340, 1996.
  
  TUD Report 94-56.
  
  
• At the International Conference HPCN challenges in telecomp and telecom: Parallel simulation of complex systems and large-scale applications held at the Technical University Delft, The Netherlands, 10-12 June 1996 the following poster has been presented:
  Parallel iterative methods for incompressible flows
  R.R.P. van Nooyen, C. Vuik, and P. Wesseling
  
  Paper related to this poster is:
  
  TUD Report 96-109.
  
  

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