A Cartesian-diffusion Langevin method for hybrid kinetic-fluid Coulomb scattering in particle-in-cell plasma simulations
Journal of Computational Physics（2022）
摘要
•A Cartesian velocity-space Langevin diffusion operator is introduced.•Combination of maximum collision frequency and sub-cycling allows large timesteps.•1st-order modifications to the electron distribution function (for resistivity) included.•Tests in many physical situations presented.
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关键词
Collision algorithm,Particle-in-cell simulation,Hybrid model,Coulomb collisions in plasmas,Numerical methods,Monte-Carlo methods
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