Comparison of high-order Eulerian methods for electron hybrid model - Inria - Institut national de recherche en sciences et technologies du numérique Access content directly
Journal Articles Journal of Computational Physics Year : 2022

Comparison of high-order Eulerian methods for electron hybrid model


In this work, we focus on the numerical approximation of a hybrid fluid-kinetic plasma model for electrons, in which energetic electrons are described by a Vlasov kinetic model whereas a fluid model is used for the cold population of electrons. First, we study the validity of this hybrid modelling in a two dimensional context (one dimension in space and one dimension in velocity) against the full (stiff) Vlasov kinetic model and second, a four dimensional configuration is considered (one dimension in space and three dimensions in velocity) following [1]. To do so, we consider two numerical Eulerian methods. The first one is based on the Hamiltonian structure of the hybrid system and the second approach, which is based on exponential integrators, enables to derive high order integrator and remove the CFL condition induced by the linear part. The efficiency of these methods, which are combined with an adaptive time stepping strategy, are discussed in the different configurations and in the linear and nonlinear regimes.
Fichier principal
Vignette du fichier
vmhl_1d_3v_submit.pdf (2.21 Mo) Télécharger le fichier
Origin : Files produced by the author(s)

Dates and versions

hal-03418778 , version 1 (08-11-2021)



Anaïs Crestetto, Nicolas Crouseilles, Yingzhe Li, Josselin Massot. Comparison of high-order Eulerian methods for electron hybrid model. Journal of Computational Physics, 2022, 451 (article n° 110857), ⟨10.1016/⟩. ⟨hal-03418778⟩
101 View
142 Download



Gmail Facebook X LinkedIn More