This directory is the reproducible input and analysis package for the Fourier case used in the AMRVAC 4.0 thermal-conduction section. It uses a periodic two-dimensional unit square, a uniform field direction (\boldsymbol b=(2,1)/\sqrt{5}), and equal-wavenumber parallel, mixed, and perpendicular temperature modes. The production matrix compares the full-tensor RKL2 parabolic reference with the two-channel hyperbolic scheme at three resolutions and three relaxation times.

The user module is mod_usr.t. The base namelists are common.par, parabolic.par, and hyperbolic.par; scripts/generate_matrix.py writes the generated per-case overlays to params/production/.

Build, run, and plot

From this directory, set AMRVAC_DIR to the root of the AMRVAC checkout:

"$AMRVAC_DIR/setup.pl" -d=2 -v=2
make AMRVAC_DIR="$AMRVAC_DIR"
python3 scripts/generate_matrix.py
python3 scripts/run_matrix.py --ranks 4
python3 scripts/analyze_benchmark.py

The last command reads runs/*/output.log and output0000.dat, writes source tables under results/source_data/, and creates the SVG, PDF, PNG, and TIFF figure under results/figures/. The matrix runner stops on the first failed case and does not overwrite an existing run directory; use --resume only for completed cases.

The benchmark requires the AMRVAC build dependencies plus Python packages numpy, matplotlib, and yt. It is a uniform-grid verification case with no AMR; the displayed values are dimensionless.