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Support track file writing for particle restart runs. (#2957)

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Co-authored-by: Paul Romano <paul.k.romano@gmail.com>
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Patrick Shriwise 2024-04-24 17:14:17 -05:00 • committed by GitHub
parent f543c007a3
commit 7936b8a59c
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2 changed files with 40 additions and 1 deletions
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33
tests/unit_tests/test_tracks.py
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@ -1,5 +1,6 @@
from pathlib import Path
import h5py
import numpy as np
import openmc
import pytest
@ -157,3 +158,35 @@ def test_write_to_vtk(sphere_model):
assert isinstance(polydata, vtk.vtkPolyData)
assert Path('tracks.vtp').is_file()
def test_restart_track(run_in_tmpdir, sphere_model):
# cut the sphere model in half with an improper boundary condition
plane = openmc.XPlane(x0=-1.0)
for cell in sphere_model.geometry.get_all_cells().values():
cell.region &= +plane
# generate lost particle files
with pytest.raises(RuntimeError, match='Maximum number of lost particles has been reached.'):
sphere_model.run(output=False)
lost_particle_files = list(Path.cwd().glob('particle_*.h5'))
assert len(lost_particle_files) > 0
particle_file = lost_particle_files[0]
# restart the lost particle with tracks enabled
sphere_model.run(tracks=True, restart_file=particle_file)
tracks_file = Path('tracks.h5')
assert tracks_file.is_file()
# check that the last track of the file matches the lost particle file
tracks = openmc.Tracks(tracks_file)
initial_state = tracks[0].particle_tracks[0].states[0]
restart_r = np.array(initial_state['r'])
restart_u = np.array(initial_state['u'])
with h5py.File(particle_file, 'r') as lost_particle_file:
lost_r = np.array(lost_particle_file['xyz'][()])
lost_u = np.array(lost_particle_file['uvw'][()])
pytest.approx(restart_r, lost_r)
pytest.approx(restart_u, lost_u)