AM06-19-006 宇宙プラズマにおけるMHD-PIC連結階層シミュレーションモデル(宇宙流体(2),一般講演)

概要

論文の詳細を見る
A fluid description of plasmas is useful to investigate the global structure in space plasma, such as the magnetosphere and heliosphere. It can reproduce the time evolution of macroscopic variations of density, bulk velocity and pressure. On the other hand, the microscopic dynamics of plasmas should be described by spatial and velocity distribution in the phase space. Wave-particle interaction process is the typical example for the application of the microscopic description. For these micro- and macroscopic description, different kinds of numerical approach may work well, respectively, e.g. MHD simulation for the macroscopic phenomena and PIC simulation for microscopic process. However, it is widely accepted that the cross-scale interaction between micro and macro processes plays a crucial role, for instance, in the diffusion region in the magnetic reconnection process. Therefore, a new model which can treat MHD-scale dynamics including particle kinetic effects is necessary. We have developed the new simulation method called "Interlocked simulation", in which MHD and PIC simulations are simultaneously performed. Here, we show its algorithm and some examples.
日本流体力学会の論文
2006-09-05