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research:start [2019/04/08 19:46] – [Computational physics] jannis | research:start [2019/12/18 09:57] – [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 / data science. | ||
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: | + | of electric discharges (non-thermal plasmas). I'm also active in the development |
- | active in the development of [[http:// | + | of [[http:// |
- | (magneto)hydrodynamics simulations. | + | simulations. |
- | 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 | + | Since 2018, I have been working on machine learning methods applied to space weather applications, |
- | * Parallelization (using MPI and/or OpenMP) | + | |
- | * Fast elliptic solvers (multigrid) | + | |
- | * Adaptive control | + | |
- | ==== Machine learning ==== | + | === Research projects |
- | Since the end of 2018 I'm involved in two projects on machine learning for space | + | * [[https://www.cwi.nl/news/ |
- | physics applications, | + | |
- | [[https://cordis.europa.eu/project/rcn/219246/factsheet/en|ESCAPE]], together | + | |
- | with [[https://homepages.cwi.nl/~camporea/|Enrico Camporeale]]. | + | * [[http:// |
+ | * [[https:// | ||
- | ==== List of ideas ==== | + | ==== Simulation codes ==== |
- | This is an incomplete list of topics | + | These are some of the simulation codes that I have developed |
- | interested in collaborating | + | |
- | touch (see [[contact:start]]). | + | |
+ | * [[http:// | ||
+ | * [[https:// | ||
+ | * [[https:// | ||
+ | * [[https:// | ||
+ | * [[https:// | ||
+ | * [[http:// | ||
+ | * [[https:// | ||
+ | |||
+ | And these are some of the (simulation) utilities that I have developed: | ||
+ | |||
+ | * [[https:// | ||
+ | * [[https:// | ||
+ | * [[https:// | ||
+ | * [[https:// | ||
+ | |||
+ | ==== Ideas for (small) projects ==== | ||
+ | |||
+ | A (very!) incomplete list of research ideas, some of which are suitable for student projects: | ||
+ | |||
+ | * 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 | ||
+ | * Coupling explicit and implicit time integration for plasma fluid models | ||
* Adding support for internal boundary conditions in a geometric multigrid solver. | * Adding support for internal boundary conditions in a geometric multigrid solver. | ||
- | * Finding the fastest possible direct sparse method | + | * Exploring efficient methods |
* Enabling efficient visualization of octree AMR data in Visit or Paraview. | * Enabling efficient visualization of octree AMR data in Visit or Paraview. | ||
* Coupling stiff chemistry to simulations with AMR (adaptive mesh refinement), | * Coupling stiff chemistry to simulations with AMR (adaptive mesh refinement), | ||
* Performing large scale 3D simulations of [[https:// | * Performing large scale 3D simulations of [[https:// | ||
* Coupling particle and fluid models in energy space, for the study of [[https:// | * Coupling particle and fluid models in energy space, for the study of [[https:// | ||
- | * More robustly solving plasma fluid equations in discharge models using explicit time integration. | ||
* Investigating the so-called " | * Investigating the so-called " | ||
- | * Investigating what happens when discharges are ' | + | * Extending |
- | * Making a tool to estimate | + | |
* Compare particle-in-cell and plasma fluid models for 2D and 3D simulations of streamer discharges. | * Compare particle-in-cell and plasma fluid models for 2D and 3D simulations of streamer discharges. | ||
- | + | * Using DSMC (or similar particle-based simulations) to evaluate (and improve?) the behavior | |
- | ==== Publications ==== | + | * Exploring methods |
- | + | ||
- | [[publications: | + | |
- | + | ||
- | ==== PhD ==== | + | |
- | + | ||
- | I finished my [[publications: | + | |
- | the [[http:// | + | |
- | [[https:// | + | |
- | CWI, under the supervision | + | |
- | + | ||
- | ==== General interests ==== | + | |
- | + | ||
- | After finishing secondary school in 2005, there were three topics that I wanted | + | |
- | to study: | + | |
- | + | ||
- | * How a (human) brain works | + | |
- | * How a computer works | + | |
- | * How nature works | + | |
- | + | ||
- | Thus far, I have mostly been busy with the latter two questions, with my primary | + | |
- | research interests being computational science and computational physics. I like | + | |
- | to study systems that have some intrinsic complexity, not coming from boundary | + | |
- | conditions or input data. | + | |