Bridging kinetic plasma descriptions and single-fluid models

Autor: Anaïs Crestetto, David Doyen, Fabrice Deluzet

Publikováno v: Journal of Plasma Physics. 86

The purpose of this paper is to bridge kinetic plasma descriptions and low-frequency single-fluid models. More specifically, the asymptotics leading to magnetohydrodynamic regimes starting from the Vlasov–Maxwell system are investigated. The analog

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::e3471cdf4ba612883acc0f5a37a71c40
https://doi.org/10.1017/s0022377820000884

A new deviational Asymptotic Preserving Monte Carlo method for the homogeneous Boltzmann equation

Autor: Giacomo Dimarco, Mohammed Lemou, Anaïs Crestetto, Nicolas Crouseilles

Publikováno v: Communications in Mathematical Sciences
Communications in Mathematical Sciences, 2020, 18 (8), pp.2305-2339. ⟨10.4310/CMS.2020.v18.n8.a10⟩
Communications in Mathematical Sciences, International Press, 2020, 18 (8), pp.2305-2339. ⟨10.4310/CMS.2020.v18.n8.a10⟩

International audience; In this work, we introduce a new Monte Carlo method for solving the Boltzmann model of rarefied gas dynamics. The method works by reformulating the original problem through a micro-macro decomposition and successively in solvi

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::7803b000a336945c1751ec5a62376c9e
https://inria.hal.science/hal-02413232/file/Boltzmann_g_to_submit.pdf

Kinetic/Fluid micro-macro numerical scheme for a two component gas mixture

Autor: Anaïs Crestetto, Marlies Pirner, Christian Klingenberg

This work is devoted to the numerical simulation of the \BGK equation for two species in the fluid limit using a particle method. Thus, we are interested in a gas mixture consisting of two species without chemical reactions assuming that the number o

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d81774e06616aa52be51d07baaca2170
http://arxiv.org/abs/1806.11485

A HYBRID METHOD FOR ANISOTROPIC ELLIPTIC PROBLEMS BASED ON THE COUPLING OF AN ASYMPTOTIC-PRESERVINGMETHOD WITH THE ASYMPTOTIC LIMIT MODEL

Autor: Fabrice Deluzet, Anaïs Crestetto, Claudia Negulescu

Publikováno v: SIAM Journal on Scientific Computing
SIAM Journal on Scientific Computing, Society for Industrial and Applied Mathematics, 2016, 38 (3), pp.A1821-A1847. ⟨10.1137/15M1011470⟩
SIAM Journal on Scientific Computing, 2016, 38 (3), pp.A1821-A1847. ⟨10.1137/15M1011470⟩

International audience; This paper presents a hybrid numerical method to solve efficiently a class of highly anisotropic elliptic problems. The anisotropy is aligned with one coordinate axis and its strength is described by a parameter ε ∈ (0, 1],

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::60be7d2340ff0c1851310245157e3398
https://hal.archives-ouvertes.fr/hal-01405302/file/SISC_M101147_CrestettoDeluzetNegulescu.pdf

Asymptotic-Preserving scheme based on a Finite Volume/Particle-In-Cell coupling for Boltzmann- BGK-like equations in the diffusion scaling

Autor: Anaïs Crestetto, Nicolas Crouseilles, Mohammed Lemou

Publikováno v: Finite Volumes for Complex Applications VII
Finite Volumes for Complex Applications VII, Jun 2014, Berlin, Germany. p. 827, 2014, 〈10.1007/978-3-319-05591-6_83〉
Finite Volumes for Complex Applications VII, Jun 2014, Berlin, Germany. p. 827, ⟨10.1007/978-3-319-05591-6_83⟩
Finite Volumes for Complex Applications VII-Elliptic, Parabolic and Hyperbolic Problems ISBN: 9783319055909

This work is devoted to the numerical simulation of the collisional Vlasov equation in the diffusion limit using particles. To that purpose, we extend the Finite Volumes/Particles hybrid scheme developed in [5], based on a micro-macro decomposition t

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c3f75517819061988427ff3a6ba6e2fa
https://hal.archives-ouvertes.fr/hal-01015936/file/Crestetto-Crouseilles-Lemou_Micro-Macro-DiffusionPreprint.pdf