INGRID: An interactive grid generator for 2D edge plasma modeling
- Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
- Brigham Young Univ., Provo, UT (United States)
- General Atomics, San Diego, CA (United States)
A fusion boundary-plasma domain is defined by axisymmetric magnetic surfaces where the geometry is often complicated by the presence of one or more X-points; and modeling boundary plasmas usually relies on computational grids that account for the magnetic field geometry. The new grid generator INGRID (Interactive Grid Generator) presented here is a Python-based code for calculating grids for fusion boundary plasma modeling, for a variety of configurations with one or two X-points in the domain. INGRID first performs partitioning over the domain consisting of a small number of patches conforming to the magnetic field and wall geometry; then it generates a subgrid on each of the patches and joins them into a global grid. This domain partitioning strategy makes possible a uniform treatment of various configurations with one or two X-points in the domain. This includes single-null, double-null, and other configurations with two X-points in the domain. The INGRID design allows generating grids either interactively, via a parameterfile driven GUI, or using a non-interactive script-controlled workflow. Results of testing demonstrate that INGRID is a flexible, robust, and user-friendly grid-generation tool for fusion boundary-plasma modeling.
- Research Organization:
- Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States); General Atomics, San Diego, CA (United States)
- Sponsoring Organization:
- USDOE National Nuclear Security Administration (NNSA)
- DOE Contract Number:
- AC52-07NA27344; FG02-95ER54309
- OSTI ID:
- 1882273
- Report Number(s):
- LLNL-TR-838677; 1059283
- Country of Publication:
- United States
- Language:
- English
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