Bridging kinetic plasma descriptions and single-fluid models
| Autor: | Anaïs Crestetto, David Doyen, Fabrice Deluzet |
|---|---|
| Rok vydání: | 2020 |
| Předmět: |
Physics
Fluid limit Boltzmann relation Numerical analysis Plasma Electron Condensed Matter Physics Kinetic energy 01 natural sciences 010305 fluids & plasmas 010101 applied mathematics symbols.namesake Classical mechanics Physics::Plasma Physics 0103 physical sciences symbols 0101 mathematics Magnetohydrodynamics Debye length |
| Zdroj: | Journal of Plasma Physics. 86 |
| ISSN: | 1469-7807 0022-3778 |
| DOI: | 10.1017/s0022377820000884 |
| Popis: | 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 analogy with the derivation, from the Vlasov–Poisson system, of a fluid representation for ions coupled to the Boltzmann relation for electrons is also outlined. The aim is to identify asymptotic parameters explaining the transitions from one microscopic description to a macroscopic low-frequency model. These investigations provide groundwork for the derivation of multi-scale numerical methods, model coupling or physics-based preconditioning. |
| Databáze: | OpenAIRE |
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