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arXiv · 2102.07040

INGRID: an interactive grid generator for 2D edge plasma modeling

B. M. Garcia·M. V. Umansky·J. Watkins·J. Guterl·O. Izacard
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Abstract

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. Based on a given geometry of the magnetic field, INGRID first calculates a skeleton grid which consists of a small number of quadrilateral patches; then it puts a subgrid on each of the patches, and joins them in 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 parameter-file 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.

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BibTeXRIS

B. M. Garcia, M. V. Umansky, J. Watkins, J. Guterl, O. Izacard. 2021-02-14. INGRID: an interactive grid generator for 2D edge plasma modeling. https://doi.org/10.1016/j.cpc.2022.108316

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