CIRM - Videos & books Library - ColDICE: a parallel Vlasov-Poisson solver using moving adaptative simplicial tessellation

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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

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https://videos.cirm-math.fr/2017-11-01_Sousbie.mp4

Informations sur la Rencontre

Nom de la rencontre : 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
Organisateurs de la rencontre : 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

Données de citation

DOI : 10.24350/CIRM.V.19238203
Citer cette vidéo: 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

[Multi angle] From Vlasov-Poisson to Euler in the gyrokinetic limit / Auteur de la Conférence Miot, Evelyne.
[Multi angle] 5D full-$f$ gyrokinetic simulation for ion turbulence and transport barrier in tokamak plasmas / Auteur de la Conférence Imadera, Kenji.
[Multi angle] Tracing the dark matter web / Auteur de la Conférence Shandarin, Sergei.
[Multi angle] The quantum Vlasov equation / Auteur de la Conférence Mauser, Norbert.

Bibliographie

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

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