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H 2 ColDICE: a parallel Vlasov-Poisson solver using moving adaptative simplicial tessellation

Auteurs : Sousbie, Thierry (Auteur de la Conférence)
CIRM (Editeur )

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cold approximation of phase space distribution phase-space sheet tesselation exact projection algorithm geometric predicates and simulation of simplicity adaptative refinement anisotropic refinement in a chaotic potential Message Passing Interface implementation cosmological test case: two sine waves visualisation of 2+2D phase space 3D cosmology: warm dark matter questions of the audience

Résumé : In this talk, I will present ColDICE[1, 2], a publicly available parallel numerical solver designed to solve the Vlasov-Poisson equations in the cold case limit. The method is based on the representation of the phase-space sheet as a conforming, self-adaptive simplicial tessellation whose vertices follow the Lagrangian equations of motion. In this presentation, I will mainly focus on describing the underlying algorithm and its practical implementation, as well as showing a few practical examples demonstrating its capabilities.

Keywords : Vlasov-Poisson; tessellation; simplicial mesh; refinement; dark matter; cosmology

Codes MSC :
45K05 - Integro-partial differential equations
65Mxx - Numerical methods for IVP of PDE
65Y05 - Parallel computation (numerical methods)
76W05 - Magnetohydrodynamics and electrohydrodynamics
85A30 - Hydrodynamic and hydromagnetic problems in astrophysics

    Informations sur la Vidéo

    Réalisateur : Hennenfent, Guillaume
    Langue : Anglais
    Date de publication : 02/11/2017
    Date de captation : 01/11/2017
    Collection : Research talks
    Format : MP4 (.mp4) - HD
    Durée : 00:35:58
    Domaine : Numerical Analysis & Scientific Computing ; PDE ; Mathematical Physics
    Audience : Chercheurs ; Doctorants , Post - Doctorants
    Download : http://videos.cirm-math.fr/2017-11-01_Sousbie.mp4

Informations sur la rencontre

Nom du congrès : Collisionless Boltzmann (Vlasov) equation and modeling of self-gravitating systems and plasmas / Boltzmann sans collisions, Vlasov et modélisation des systèmes auto-gravitants et des plasmas
Organisteurs Congrès : Colombi, Stéphane ; Devriendt, Julien ; Elskens, Yves ; Taruya, Atsushi ; Triay, Roland
Dates : 30/10/2017 - 03/11/2017
Année de la rencontre : 2017
URL Congrès : http://conferences.cirm-math.fr/1683.html

Citation Data

DOI : 10.24350/CIRM.V.19238203
Cite this video as: Sousbie, Thierry (2017). ColDICE: a parallel Vlasov-Poisson solver using moving adaptative simplicial tessellation. CIRM. Audiovisual resource. doi:10.24350/CIRM.V.19238203
URI : http://dx.doi.org/10.24350/CIRM.V.19238203

Voir aussi


  1. [1] Sousbie, T., & Colombi, S. (2016). ColDICE: A parallel Vlasov-Poisson solver using moving adaptive simplicial tessellation. Journal of Computational Physics, 321, 644-697 - http://dx.doi.org/10.1016/j.jcp.2016.05.048

  2. [2] GitHub - thierry-sousbie/dice: DICE / ColDICE: 6D collisionless phase space hydrodynamics using a lagrangian tesselation (MPI) - https://github.com/thierry-sousbie/dice