Input files and data for "A componentwise spherical Dirichlet-to-Neumann closure for finite-magnetic-Reynolds-number finite-volume MHD"

Run setup files, output data and analysis scripts that reproduce the results of the article “A componentwise spherical Dirichlet-to-Neumann closure for finite-magnetic-Reynolds-number finite-volume MHD”. All runs use the solver apotBCMultiRegionInterFoamDtN of the open-source code FreeMHD, tag dtn-v1 (commit a36d930), available at https://github.com/PlasmaControl/FreeMHD, built with OpenFOAM v2206. The archive holds the 116 cases behind every table, figure and quoted number in the article, grouped as manufactured modes, free decay, sphere dynamo, spheroid onset, braking rotor, cost and scaling. Each case contains its OpenFOAM inputs (0, constant and system, with blockMeshDict) and the output files the article reads, such as magnetic energy histories, rotor histories and log extracts. Meshes are not included. They are regenerated with blockMesh, the included point mapping script and splitMeshRegions, as described in README.md. The tools folder holds the case and mesh generators, two OpenFOAM post-processing utilities, the independent reference scripts and the analysis and figure scripts. README.md lists the build steps, the run commands, the solver switches and the folder behind each result. MANIFEST.tsv gives the size and MD5 checksum of every file.