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

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

Journal Article · Mon Feb 21 23:00:00 EST 2022 · Computer Physics Communications

DOI:https://doi.org/10.1016/j.cpc.2022.108316· OSTI ID:1883439

^[1]; ^[1]; ^[2]; Guterl, Jerome ^[3]; Izacard, Olivier ^[1]

Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
Brigham Young Univ., Rexburg, ID (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 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.

View Accepted Manuscript (DOE)

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)

Grant/Contract Number:: AC52-07NA27344; FG02-95ER54309

OSTI ID:: 1883439

Report Number(s):: LLNL-JRNL-838987; 1059646

Journal Information:: Computer Physics Communications, Journal Name: Computer Physics Communications Vol. 275; ISSN 0010-4655

Publisher:: ElsevierCopyright Statement

Country of Publication:: United States

Language:: English

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