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74 lines
2.2 KiB
Python
74 lines
2.2 KiB
Python
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import numpy as np
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import pytest
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import openmc
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import openmc.lib
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from tests import cdtemp
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@pytest.fixture(scope='module', autouse=True)
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def double_lattice_model():
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model = openmc.Model()
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# Create a single material
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m = openmc.Material()
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m.add_nuclide('U235', 1.0)
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m.set_density('g/cm3', 10.0)
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model.materials.append(m)
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# Create a universe with a single infinite cell
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c = openmc.Cell(fill=m)
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u = openmc.Universe(cells=[c])
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# Create a 2x2 lattice filled with above universe
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lattice = openmc.RectLattice()
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lattice.lower_left = (0.0, 0.0)
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lattice.pitch = (1.0, 1.0)
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lattice.universes = np.full((2, 2), u)
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# Create two cells each filled with the same lattice, one from x=0..2 and
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# y=0..2 and the other from x=2..4 and y=0..2
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x0 = openmc.XPlane(0.0, boundary_type='vacuum')
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x2 = openmc.XPlane(2.0)
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x4 = openmc.XPlane(4.0, boundary_type='vacuum')
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y0 = openmc.YPlane(0.0, boundary_type='vacuum')
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y2 = openmc.YPlane(2.0, boundary_type='vacuum')
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cell_with_lattice1 = openmc.Cell(fill=lattice, region=+x0 & -x2 & +y0 & -y2)
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cell_with_lattice2 = openmc.Cell(fill=lattice, region=+x2 & -x4 & +y0 & -y2)
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cell_with_lattice2.translation = (2., 0., 0.)
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model.geometry = openmc.Geometry([cell_with_lattice1, cell_with_lattice2])
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# Add necessary settings and export
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model.settings.batches = 10
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model.settings.inactive = 0
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model.settings.particles = 100
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with cdtemp():
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model.export_to_xml()
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openmc.lib.init()
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yield
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openmc.lib.finalize()
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# This shows the expected cell instance numbers for each lattice position:
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# ┌─┬─┬─┬─┐
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# │2│3│6│7│
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# ├─┼─┼─┼─┤
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# │0│1│4│5│
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# └─┴─┴─┴─┘
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expected_results = [
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((0.5, 0.5, 0.0), 0),
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((1.5, 0.5, 0.0), 1),
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((0.5, 1.5, 0.0), 2),
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((1.5, 1.5, 0.0), 3),
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((2.5, 0.5, 0.0), 4),
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((3.5, 0.5, 0.0), 5),
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((2.5, 1.5, 0.0), 6),
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((3.5, 1.5, 0.0), 7),
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]
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@pytest.mark.parametrize("r,expected_cell_instance", expected_results)
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def test_cell_instance_multilattice(r, expected_cell_instance):
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_, cell_instance = openmc.lib.find_cell(r)
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assert cell_instance == expected_cell_instance
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