Parallel lattice-boltzmann transport solver in complex geometry

Matthieu Boileau 1, 2 Bérenger Bramas 3 Emmanuel Franck 2 Philippe Helluy 1, 2 Laurent Navoret 2, 1
2 TONUS - TOkamaks and NUmerical Simulations
IRMA - Institut de Recherche Mathématique Avancée, Inria Nancy - Grand Est
3 CAMUS - Compilation pour les Architectures MUlti-coeurS
Inria Nancy - Grand Est, ICube - Laboratoire des sciences de l'ingénieur, de l'informatique et de l'imagerie
Abstract : We present an efficient solver for the conservative transport equation with variable coefficients in complex geometries. The solver is based on a kinetic formulation resembling the Lattice-Boltzmann approach. The chosen formalism allows to obtaining an explicit and conservative scheme that requires no matrix inversion and that is unconditionally stable with respect to the time step size. We present the method and its optimized parallel implementation on complex toroidal geometries. This solver will be used as a building block for tokamak plasma physics simulation.
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Submitted on : Wednesday, December 11, 2019 - 10:26:19 AM
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Matthieu Boileau, Bérenger Bramas, Emmanuel Franck, Philippe Helluy, Laurent Navoret. Parallel lattice-boltzmann transport solver in complex geometry. 2019. ⟨hal-02404082⟩

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