| Author | Usman Riaz, E. Seegyoung Seol, Robert Hager, Mark S. Shephard |
|---|---|
| Title | Modeling and Meshing for Tokamak Edge Plasma Simulations |
| Year | 2023 |
| Journal | Computer Physics Communications |
| Volume | 295 |
| Abstract | The accurate representation of a problem domain in terms of a geometric model and its effective discretization into a mesh plays an important role in achieving higher-quality simulation results and better computational efficiency. In this work, an automated modeling and meshing infrastructure is developed to produce high-quality tokamak meshes for large-scale fusion simulations based on the X-point Gyro-kinetic Code (XGC). The XGC edge plasma particle-in-cell (PIC) code requires field-aligned meshes with nodes properly placed on the magnetic flux curves and a one-element deep element mesh generated between the flux curves where acceptable and unstructured mesh in areas where the one-element deep mesh is not satisfactory. The procedures that determine areas where one-element deep meshes are not satisfactory are presented, as well as the procedures used to generate quality meshes in those areas. Also, the procedures to provide the mesh information needed for the efficient execution of the XGC computational operations are presented. |
| PDF File |  Download |
| DOI Link | https://doi.org/10.1016/j.cpc.2023.108982 |