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

Garcia, Bryan M.; Umansky, Maxim V.; Watkins, Joey; Guterl, Jerome; Izacard, Olivier

doi:10.1016/j.cpc.2022.108316

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

Garcia, Bryan M.·Umansky, Maxim V.·Watkins, Joey·Guterl, Jerome·Izacard, Olivier

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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 in this work 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 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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Garcia, Bryan M., Umansky, Maxim V., Watkins, Joey, Guterl, Jerome, Izacard, Olivier. 2022-02-22. INGRID: An interactive grid generator for 2D edge plasma modeling. https://doi.org/10.1016/j.cpc.2022.108316

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