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Jannis Teunissen

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research:start [2019/04/08 19:47] – [List of ideas] jannisresearch:start [2023/07/05 14:50] – [Experience and interests] jannis
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 ===== Research ===== ===== Research =====
  
-==== Computational physics ====+==== Experience and interests ==== 
 + 
 +My general research interests are scientific computing, computational (plasma) physics and more recently also machine learning.
  
 I have developed both particle-in-cell and plasma fluid codes for the simulation I have developed both particle-in-cell and plasma fluid codes for the simulation
-of electric discharges (non-thermal plasmas), see [[projects:start]]. I'm also +of electric discharges (non-thermal plasmas). I'm also active in the development 
-active in the development of [[http://amrvac.org/|MPI-AMRVAC]], a framework for +of [[http://amrvac.org/|MPI-AMRVAC]], a framework for (magneto)hydrodynamics 
-(magneto)hydrodynamics simulations. From a computational point of view, my work +simulations. My work has focused on topics such as adaptive mesh refinement 
-has focused on topics such as:+(AMR) and fast elliptic solvers (e.g., multigrid). I like to study systems that 
 +have some intrinsic complexity, not coming from boundary conditions or input 
 +data.
  
-  * Adaptive mesh refinement (AMR) +Since 2018, I have been working on machine learning methods applied to space weather applications, in collaboration with [[https://ecamporeale.github.io/|Enrico Camporeale]], as I have taken over two EU projects in this direction from Enrico (AIDA and ESCAPE, see below). Current research focuses on forecasting time-series data, recognizing magnetic reconnection, and the use of unsupervised methods for e.g. dimensionality reduction and clustering.
-  * Parallelization (using MPI and/or OpenMP) +
-  * Fast elliptic solvers (multigrid) +
-  * Adaptive control of particle weights+
  
-==== Machine learning ====+=== Research projects ===
  
-Since the end of 2018 I'm involved in two projects on machine learning for space +//(Past projects in italics)//
-physics applications, namely [[http://www.aida-space.eu/|AIDA]] and +
-[[https://cordis.europa.eu/project/rcn/219246/factsheet/en|ESCAPE]], together +
-with [[https://homepages.cwi.nl/~camporea/|Enrico Camporeale]].+
  
-==== List of research ideas ====+  * [[https://www.nwo.nl/en/news/two-ppp-consortia-will-kick-improving-cyber-physical-systems|REGENERATE: Reliable Next Generation Actuation Systems]] (NWO KIC project) 
 +  * [[https://www.cwi.nl/news/2019/technology-grant-for-plasma-for-plants-project|Plasma for Plants (TTW)]] (#17183) 
 +  * [[https://www.cwi.nl/news/2018/technology-grant-awarded-to-optimize-plasma-assisted-combustion|Plasma assisted combustion (TTW)]] (#16480)
  
-This is an incomplete list of topics that I'd like to investigate. If you are 
-interested in collaborating or doing a student project, feel free to get in 
-touch (see [[contact:start]]). 
  
-  * Adding support for internal boundary conditions in a geometric multigrid solver. +  * //[[https://www.narcis.nl/research/RecordID/OND1362478|Let CO2 spark! (TTW)]] (#15052)// 
-  * Finding the fastest possible direct sparse method for solving the coarse grid equations in a geometric multigrid method. +  * //[[http://www.aida-space.eu/|AIDA (H2020 - 776262)]] [[https://cordis.europa.eu/project/id/776262|EU info]]// 
-  * Enabling efficient visualization of octree AMR data in Visit or Paraview. +  * //[[https://projectescape.eu/|ESCAPE (H2020 - 824064)]] [[https://cordis.europa.eu/project/id/824064|EU info]]//
-  * Coupling stiff chemistry to simulations with AMR (adaptive mesh refinement), where the chemistry can be evaluated at coarser resolution and perhaps partially implicitly. +
-  * Performing large scale 3D simulations of [[https://en.wikipedia.org/wiki/Sprite_(lightning)|sprite]] formation +
-  * Coupling particle and fluid models in energy space, for the study of [[https://en.wikipedia.org/wiki/Runaway_electrons|runaway electron]] production in electric discharges. +
-  * More robustly solving plasma fluid equations in discharge models using explicit time integration. +
-  * Investigating the so-called "stability field" of streamer discharges through computations, with the goal of predicting how this field depends on the gas. +
-  * Investigating what happens when discharges are 'long' compared to the time scale for electron attachment. +
-  * Making a tool to estimate discharge inception probability and jitter from an electrostatic potential (*currently in progress with Shahriar Mirpour and Andy Martinez*). +
-  * Compare particle-in-cell and plasma fluid models for 2D and 3D simulations of streamer discharges.+
  
-==== Publications ====+==== Supervision ====
  
-[[publications:start|List of publications]].+//Past postdocs, PhD students etc. in italic//
  
-==== PhD ====+=== Postdocs ===
  
-I finished my [[publications:thesis|PhD thesis]] in November 2015. The work was done in +  * //Ajay Tiwari// 
-the [[http://cwimd.nl|Multiscale Dynamics]]((This is our official (CWI-hosted) +  * //[[https://huanwinter.github.io/|Andong Hu]]//
-[[https://www.cwi.nl/research-groups/Multiscale-Dynamics|webpage]])) group at +
-CWI, under the supervision of [[http://homepages.cwi.nl/~ebert/|Ute Ebert]].+
  
-==== General interests ====+//(In collaboration with [[https://ecamporeale.github.io/|Enrico Camporeale]])//
  
-After finishing secondary school in 2005, there were three topics that I wanted +=== PhD students ===
-to study:+
  
-   * How a (human) brain works +I co-supervise(d) the following PhD students together with [[https://homepages.cwi.nl/~ebert/|Ute Ebert]]:
-   * How a computer works +
-   * How nature works+
  
-Thus far, I have mostly been busy with the latter two questions, with my primary +  * Hemaditya Malla 
-research interests being computational science and computational physics. I like +  * Dennis Bouwman 
-to study systems that have some intrinsic complexity, not coming from boundary +  * Baohong Guo 
-conditions or input data.+  * Xiaoran Li 
 +  * Zhen Wang 
 + 
 +  * //Andy Martinez// 
 + 
 +=== PhD commitee member === 
 + 
 +  * Hani Francisco (2023, TU Eindhoven) 
 +  * Brecht Laperre (2022, KU Leuven) 
 +  * Andy Martinez (2022, TU Eindhoven) 
 +  * Alejandro Malagon (2021, University of Granada) 
 +  * Shahriar Mirpour (2021, TU Eindhoven) 
 + 
 + 
 +=== MSc / BSc students === 
 + 
 +  * //Francesca Schiavello// (2021, UvA MSc) 
 +  * //Chris van der Heijden// (2021, TU/e BSc) 
 +  * //Stijn van Deutekom// (2020, TU/e BSc) 
 + 
 +==== Ideas for research projects ==== 
 + 
 +Examples of research/project ideas: 
 + 
 +  * Simulating incompressible flow with the Afivo framework 
 +  * Exploring hybrid OpenMP/MPI parallelization for AMR frameworks 
 +  * Solving plasma fluid equations implicitly. In particular, what is a good preconditioner? 
 +  * Improving the convergence rate of Monte Carlo particle swarm simulations in low electric fields. One idea is to limit the drift in electron momentum due to collisions. 
 +  * Coupling explicit and implicit time integration for plasma fluid models 
 +  * Performing large scale 3D simulations of [[https://en.wikipedia.org/wiki/Sprite_(lightning)|sprite]] formation 
 +  * Coupling particle and fluid models in energy space, for the study of [[https://en.wikipedia.org/wiki/Runaway_electrons|runaway electron]] production in electric discharges. 
 +  * Extending the discharge model comparison of this [[http://dx.doi.org/10.1088/0963-0252/24/6/065002|paper]] to other fluid models
  
  

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