Electromagnetic Particle Simulation with Unstructured-Grid Model

摘要

We have developed an electromagnetic particle simulation code with an unstructred-grid coordinate. This code solves Maxwell's equations which is discretized with triangular elements in 2D simulation space. Plasma particles are also traced by solving the equations of motion with the Buneman-Boris method. The main advantage of this code is the adaptability of modeling more realistic shape of a spacecraft than the orthogonal grid code. Thus, this simulation code is suitable for analyzing the plasma environment in the vicinity of a spacecraft especially in the region within a Debye length from the surface of the spacecraft. We will show the scheme of this code and also show a couple of results from the test simulation runs taking into account of a realistic shape of a spacecraft.