Zobrazeno 1 - 10
of 113
pro vyhledávání: '"Mehrenberger Michel"'
Publikováno v:
ESAIM: Proceedings and Surveys, Vol 63, Pp 78-108 (2018)
In [2], 1D×1D two-species Vlasov-Poisson simulations are performed by the semi-Lagrangian method. Thanks to a classical first order dispersion analysis, we are able to check the validity of their simulations; the extension to second order is perform
Externí odkaz:
https://doaj.org/article/dc826faa57ed45f688bfab8eae197c71
Publikováno v:
ESAIM: Proceedings and Surveys, Vol 63, Pp 179-207 (2018)
In magnetically confined plasmas used in Tokamak, turbulence is respon-sible for specific transport that limits the performance of this kind of reactors. Gyroki-netic simulations are able to capture ion and electron turbulence that give rise to heat
Externí odkaz:
https://doaj.org/article/e6193ccf5a204c879027350a81d535ed
Publikováno v:
ESAIM: Proceedings and Surveys, Vol 64, Pp 17-36 (2018)
We are interested in developing a numerical method for capturing stationary sheaths, that a plasma forms in contact with a metallic wall. This work is based on a bi-species (ion/electron) Vlasov-Ampère model proposed in [3]. The main question addres
Externí odkaz:
https://doaj.org/article/38db8904274b44e7b4947a8c3e2385b4
Publikováno v:
ESAIM: Proceedings and Surveys, Vol 53, Pp 149-176 (2016)
This paper introduces a Semi-Lagrangian solver for the Vlasov-Poisson equations on a uniform hexagonal mesh. The latter is composed of equilateral triangles, thus it doesn’t contain any singularities, unlike polar meshes. We focus on the guiding-
Externí odkaz:
https://doaj.org/article/13f709d2d30d4da79f9443a430eb3a48
Publikováno v:
ESAIM: Proceedings and Surveys, Vol 53, Pp 99-119 (2016)
Semi-Lagrangian guiding center simulations are performed on sinusoidal perturbations of cartesian grids, and on deformed polar grid with different boundary conditions. Key ingredients are: the use of a B-spline finite element solver for the Poisson
Externí odkaz:
https://doaj.org/article/4f301451c7e04b1588575b5e921d5062
Autor:
Rozar Fabien, Steiner Christophe, Latu Guillaume, Mehrenberger Michel, Grandgirard Virginie, Bigot Julien, Cartier-Michaud Thomas, Roman Jean
Publikováno v:
ESAIM: Proceedings and Surveys, Vol 53, Pp 191-210 (2016)
Gyrokinetic modeling is appropriate for describing Tokamak plasma turbulence, and the gyroaverage operator is a cornerstone of this approach. In a gyrokinetic code, the gyroaveraging scheme needs to be accurate enough to avoid spoiling the data but
Externí odkaz:
https://doaj.org/article/58a840efb3e74406b56b0c532dd32589
Autor:
Bourne, Emily, Munschy, Yann, Grandgirard, Virginie, Mehrenberger, Michel, Ghendrih, Philippe
Publikováno v:
In Journal of Computational Physics 1 September 2023 488
Autor:
Bernier, Joackim, Mehrenberger, Michel
The asymptotic behavior of the solutions of the second order linearized Vlasov-Poisson system around homogeneous equilibria is derived. It provides a fine description of some nonlinear and multidimensional phenomena such as the existence of Best freq
Externí odkaz:
http://arxiv.org/abs/1903.08374
We are interested in developing a numerical method for capturing stationary sheaths, that a plasma forms in contact with a metallic wall. This work is based on a bi-species (ion/electron) Vlasov-Amp{\`e}re model proposed in [3]. The main question add
Externí odkaz:
http://arxiv.org/abs/1802.05852
We construct a high order discontinuous Galerkin method for solving general hyperbolic systems of conservation laws. The method is CFL-less, matrix-free, has the complexity of an explicit scheme and can be of arbitrary order in space and time. The co
Externí odkaz:
http://arxiv.org/abs/1802.04590