Numerical simulations of one laser-plasma model based on Poisson structure
作者: Yingzhe LiYajuan SunNicolas Crouseilles
作者单位: 1LSEC, Academy of Mathematics and Systems Science, Chinese Academy of Sciences, Beijing 100190, China
2University of Chinese Academy of Sciences, Beijing 100049, China
3Univ. Rennes, Inria Bretagne Atlantique & ENS Rennes, MINGuS, France
刊名: Journal of Computational Physics, 2020, Vol.405
来源数据库: Elsevier Journal
DOI: 10.1016/j.jcp.2019.109172
关键词: Laser-plasma interactionVlasov–Maxwell systemPoisson bracketHamiltonian splittingConservative splitting
原始语种摘要: Abstract(#br)In this paper, a bracket structure is proposed for the laser-plasma interaction model introduced in [19], and it is proved by direct calculations that the bracket is Poisson which satisfies the Jacobi identity. Then splitting methods in time are proposed based on the Poisson structure. For the quasi-relativistic case, the Hamiltonian splitting leads to three subsystems which can be solved exactly. The conservative splitting is proposed for the fully relativistic case, and three one-dimensional conservative subsystems are obtained. Combined with the splittings in time, in phase space discretization we use the Fourier spectral and finite volume methods. It is proved that the discrete charge and discrete Poisson equation are conserved by our numerical schemes. Numerically, some...
全文获取路径: Elsevier  (合作)
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影响因子:2.138 (2012)

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关键词翻译
关键词翻译
  • splitting 裂距
  • Poisson 泊松
  • numerical 数字的
  • structure 构造
  • Hamiltonian 哈密(尔)顿
  • plasma 深绿玉髓
  • bracket 腕臂
  • interaction 相互酌
  • equation 方程
  • conservative 保守