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https://github.com/openmc-dev/openmc.git
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Merge pull request #1947 from pshriwise/ww-final-tests
Weight windows final push
This commit is contained in:
Paul Romano
GitHub
commit
72af700ffd
30 changed files with 2244 additions and 18 deletions
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@ -1,13 +1,23 @@
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from contextlib import contextmanager
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import os
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from shutil import copy
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import tempfile
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@contextmanager
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def cdtemp():
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"""Context manager to change to/return from a tmpdir."""
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def cdtemp(files=None):
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"""Context manager to change to/return from a tmpdir.
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Parameters
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----------
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files : Iterable of str or Path-like
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Set of files to copy into the temporary directory
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"""
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with tempfile.TemporaryDirectory() as tmpdir:
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cwd = os.getcwd()
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if files:
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for file in files:
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copy(file, tmpdir, follow_symlinks=True)
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try:
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os.chdir(tmpdir)
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yield
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1
tests/regression_tests/weightwindows/__init__.py
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1
tests/regression_tests/weightwindows/__init__.py
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94
tests/regression_tests/weightwindows/inputs_true.dat
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94
tests/regression_tests/weightwindows/inputs_true.dat
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File diff suppressed because one or more lines are too long
1
tests/regression_tests/weightwindows/results_true.dat
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1
tests/regression_tests/weightwindows/results_true.dat
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@ -0,0 +1 @@
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c77af605fb23bc3f03bb304b82cc2d0d9efe7826167f43202fa0ecba17e6a77fc1a91bf9f4b23f175ae98c04c69067bffb96d7d68e30a126f5fa7c0080ea8367
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110
tests/regression_tests/weightwindows/test.py
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110
tests/regression_tests/weightwindows/test.py
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@ -0,0 +1,110 @@
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from copy import deepcopy
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import pytest
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import numpy as np
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import openmc
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from openmc.stats import Discrete, Point
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from tests.testing_harness import HashedPyAPITestHarness
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@pytest.fixture
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def model():
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model = openmc.Model()
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# materials (M4 steel alloy)
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m4 = openmc.Material()
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m4.set_density('g/cc', 2.3)
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m4.add_nuclide('H1', 0.168018676)
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m4.add_nuclide("H2", 1.93244e-05)
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m4.add_nuclide("O16", 0.561814465)
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m4.add_nuclide("O17", 0.00021401)
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m4.add_nuclide("Na23", 0.021365)
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m4.add_nuclide("Al27", 0.021343)
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m4.add_nuclide("Si28", 0.187439342)
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m4.add_nuclide("Si29", 0.009517714)
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m4.add_nuclide("Si30", 0.006273944)
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m4.add_nuclide("Ca40", 0.018026179)
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m4.add_nuclide("Ca42", 0.00012031)
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m4.add_nuclide("Ca43", 2.51033e-05)
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m4.add_nuclide("Ca44", 0.000387892)
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m4.add_nuclide("Ca46", 7.438e-07)
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m4.add_nuclide("Ca48", 3.47727e-05)
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m4.add_nuclide("Fe54", 0.000248179)
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m4.add_nuclide("Fe56", 0.003895875)
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m4.add_nuclide("Fe57", 8.99727e-05)
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m4.add_nuclide("Fe58", 1.19737e-05)
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s0 = openmc.Sphere(r=240)
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s1 = openmc.Sphere(r=250, boundary_type='vacuum')
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c0 = openmc.Cell(fill=m4, region=-s0)
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c1 = openmc.Cell(region=+s0 & -s1)
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model.geometry = openmc.Geometry([c0, c1])
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# settings
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settings = model.settings
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settings.run_mode = 'fixed source'
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settings.particles = 200
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settings.batches = 2
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settings.max_splits = 200
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settings.photon_transport = True
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space = Point((0.001, 0.001, 0.001))
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energy = Discrete([14E6], [1.0])
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settings.source = openmc.Source(space=space, energy=energy)
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# tally
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mesh = openmc.RegularMesh()
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mesh.lower_left = (-240, -240, -240)
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mesh.upper_right = (240, 240, 240)
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mesh.dimension = (5, 10, 15)
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mesh_filter = openmc.MeshFilter(mesh)
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e_bnds = [0.0, 0.5, 2E7]
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energy_filter = openmc.EnergyFilter(e_bnds)
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particle_filter = openmc.ParticleFilter(['neutron', 'photon'])
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tally = openmc.Tally()
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tally.filters = [mesh_filter, energy_filter, particle_filter]
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tally.scores = ['flux']
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model.tallies.append(tally)
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# weight windows
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# load pre-generated weight windows
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# (created using the same tally as above)
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ww_n_lower_bnds = np.loadtxt('ww_n.txt')
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ww_p_lower_bnds = np.loadtxt('ww_p.txt')
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# create a mesh matching the one used
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# to generate the weight windows
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ww_mesh = openmc.RegularMesh()
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ww_mesh.lower_left = (-240, -240, -240)
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ww_mesh.upper_right = (240, 240, 240)
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ww_mesh.dimension = (5, 6, 7)
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ww_n = openmc.WeightWindows(ww_mesh,
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ww_n_lower_bnds,
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None,
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10.0,
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e_bnds)
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ww_p = openmc.WeightWindows(ww_mesh,
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ww_p_lower_bnds,
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None,
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10.0,
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e_bnds)
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model.settings.weight_windows = [ww_n, ww_p]
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return model
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def test_weightwindows(model):
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test = HashedPyAPITestHarness('statepoint.2.h5', model)
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test.main()
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420
tests/regression_tests/weightwindows/ww_n.txt
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420
tests/regression_tests/weightwindows/ww_n.txt
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@ -0,0 +1,420 @@
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tests/regression_tests/weightwindows/ww_p.txt
Normal file
420
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Normal file
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||||
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||||
2.210707325798542070e-07
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||||
-1.000000000000000000e+00
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||||
1.728787338791035720e-04
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||||
-1.000000000000000000e+00
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||||
5.197081842709918220e-04
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||||
-1.000000000000000000e+00
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||||
9.256616392487857544e-05
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||||
-1.000000000000000000e+00
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||||
1.032520710502734699e-08
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||||
-1.000000000000000000e+00
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||||
2.027381220364608057e-16
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||||
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||||
1.225736024671247218e-05
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||||
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||||
3.856169633708643398e-05
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||||
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||||
1.806455099029475317e-05
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||||
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||||
7.691527781829036254e-17
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||||
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||||
1.298062961617926916e-05
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||||
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1.178616843705955963e-03
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||||
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4.441328419270368887e-03
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||||
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||||
8.919466185572301909e-04
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||||
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||||
5.272021975060514019e-06
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||||
-1.000000000000000000e+00
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||||
1.607976851421854571e-04
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||||
-1.000000000000000000e+00
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||||
1.112842419638761758e-02
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||||
-1.000000000000000000e+00
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||||
6.433819434431045647e-02
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||||
-1.000000000000000000e+00
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||||
1.095563748531924904e-02
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||||
-1.000000000000000000e+00
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||||
8.370896020975688591e-05
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||||
-1.000000000000000000e+00
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||||
2.223447159544331337e-04
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||||
-1.000000000000000000e+00
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||||
1.102706140784315975e-02
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||||
-1.000000000000000000e+00
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||||
6.684484191345574366e-02
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||||
-1.000000000000000000e+00
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||||
1.111302464121833623e-02
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||||
-1.000000000000000000e+00
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||||
1.255887947410807431e-04
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||||
-1.000000000000000000e+00
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||||
1.004439072885827748e-05
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||||
-1.000000000000000000e+00
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||||
8.081009012754719698e-04
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||||
-1.000000000000000000e+00
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||||
5.384625561469683769e-03
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||||
-1.000000000000000000e+00
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||||
1.146714816952060971e-03
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||||
-1.000000000000000000e+00
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||||
3.574060778841494232e-06
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||||
-1.000000000000000000e+00
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||||
2.251232708364186507e-10
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||||
-1.000000000000000000e+00
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||||
6.717625881826167172e-05
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||||
-1.000000000000000000e+00
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||||
6.949587369646497293e-05
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||||
-1.000000000000000000e+00
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||||
2.909334597507522605e-05
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||||
-1.000000000000000000e+00
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||||
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||||
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||||
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||||
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||||
8.582011716859218622e-15
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||||
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||||
8.304845400451923449e-08
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||||
-1.000000000000000000e+00
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||||
4.575723837205823402e-11
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||||
-1.000000000000000000e+00
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||||
-1.000000000000000000e+00
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||||
-1.000000000000000000e+00
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||||
1.311680713303003522e-15
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||||
-1.000000000000000000e+00
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||||
2.686689485248190559e-05
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||||
-1.000000000000000000e+00
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||||
4.316605279989737501e-05
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||||
-1.000000000000000000e+00
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||||
6.401055165502384025e-06
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||||
-1.000000000000000000e+00
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||||
5.726152701849347207e-16
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||||
-1.000000000000000000e+00
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||||
8.541606727879512040e-07
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||||
-1.000000000000000000e+00
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||||
2.029396545382813118e-04
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||||
-1.000000000000000000e+00
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||||
4.299195570308034968e-04
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||||
-1.000000000000000000e+00
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||||
8.544159282151438236e-05
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||||
-1.000000000000000000e+00
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||||
1.099532245627738225e-06
|
||||
-1.000000000000000000e+00
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||||
1.289814511028014912e-06
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||||
-1.000000000000000000e+00
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||||
1.104204785730725317e-04
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||||
-1.000000000000000000e+00
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||||
6.870228272606287295e-04
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||||
-1.000000000000000000e+00
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||||
1.399807456616496116e-04
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||||
-1.000000000000000000e+00
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||||
4.279460329782799377e-09
|
||||
-1.000000000000000000e+00
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||||
1.290717169529484602e-13
|
||||
-1.000000000000000000e+00
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||||
1.925724800911436302e-05
|
||||
-1.000000000000000000e+00
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||||
9.332371598523186474e-05
|
||||
-1.000000000000000000e+00
|
||||
1.310633551813380206e-05
|
||||
-1.000000000000000000e+00
|
||||
6.574706543646946099e-16
|
||||
-1.000000000000000000e+00
|
||||
-1.000000000000000000e+00
|
||||
-1.000000000000000000e+00
|
||||
3.827053602579980514e-15
|
||||
-1.000000000000000000e+00
|
||||
2.101790478097516960e-09
|
||||
-1.000000000000000000e+00
|
||||
9.904481358675477728e-13
|
||||
-1.000000000000000000e+00
|
||||
-1.000000000000000000e+00
|
||||
0
tests/unit_tests/weightwindows/__init__.py
Normal file
0
tests/unit_tests/weightwindows/__init__.py
Normal file
194
tests/unit_tests/weightwindows/test.py
Normal file
194
tests/unit_tests/weightwindows/test.py
Normal file
|
|
@ -0,0 +1,194 @@
|
|||
import os
|
||||
from pathlib import Path
|
||||
|
||||
import numpy as np
|
||||
import pytest
|
||||
from uncertainties import ufloat
|
||||
|
||||
import openmc
|
||||
from openmc.stats import Discrete, Point
|
||||
|
||||
from tests import cdtemp
|
||||
|
||||
@pytest.fixture
|
||||
def model():
|
||||
openmc.reset_auto_ids()
|
||||
model = openmc.Model()
|
||||
|
||||
# materials (M4 steel alloy)
|
||||
m4 = openmc.Material()
|
||||
m4.set_density('g/cc', 2.3)
|
||||
m4.add_nuclide('H1', 0.168018676)
|
||||
m4.add_nuclide("H2", 1.93244e-05)
|
||||
m4.add_nuclide("O16", 0.561814465)
|
||||
m4.add_nuclide("O17", 0.00021401)
|
||||
m4.add_nuclide("Na23", 0.021365)
|
||||
m4.add_nuclide("Al27", 0.021343)
|
||||
m4.add_nuclide("Si28", 0.187439342)
|
||||
m4.add_nuclide("Si29", 0.009517714)
|
||||
m4.add_nuclide("Si30", 0.006273944)
|
||||
m4.add_nuclide("Ca40", 0.018026179)
|
||||
m4.add_nuclide("Ca42", 0.00012031)
|
||||
m4.add_nuclide("Ca43", 2.51033e-05)
|
||||
m4.add_nuclide("Ca44", 0.000387892)
|
||||
m4.add_nuclide("Ca46", 7.438e-07)
|
||||
m4.add_nuclide("Ca48", 3.47727e-05)
|
||||
m4.add_nuclide("Fe54", 0.000248179)
|
||||
m4.add_nuclide("Fe56", 0.003895875)
|
||||
m4.add_nuclide("Fe57", 8.99727e-05)
|
||||
m4.add_nuclide("Fe58", 1.19737e-05)
|
||||
|
||||
s0 = openmc.Sphere(r=240)
|
||||
s1 = openmc.Sphere(r=250, boundary_type='vacuum')
|
||||
|
||||
c0 = openmc.Cell(fill=m4, region=-s0)
|
||||
c1 = openmc.Cell(region=+s0 & -s1)
|
||||
|
||||
model.geometry = openmc.Geometry([c0, c1])
|
||||
|
||||
# settings
|
||||
settings = model.settings
|
||||
settings.run_mode = 'fixed source'
|
||||
settings.particles = 500
|
||||
settings.batches = 2
|
||||
settings.max_splits = 100
|
||||
settings.photon_transport = True
|
||||
space = Point((0.001, 0.001, 0.001))
|
||||
energy = Discrete([14E6], [1.0])
|
||||
|
||||
settings.source = openmc.Source(space=space, energy=energy)
|
||||
|
||||
# tally
|
||||
mesh = openmc.RegularMesh()
|
||||
mesh.lower_left = (-240, -240, -240)
|
||||
mesh.upper_right = (240, 240, 240)
|
||||
mesh.dimension = (3, 5, 7)
|
||||
|
||||
mesh_filter = openmc.MeshFilter(mesh)
|
||||
|
||||
e_bnds = [0.0, 0.5, 2E7]
|
||||
energy_filter = openmc.EnergyFilter(e_bnds)
|
||||
|
||||
particle_filter = openmc.ParticleFilter(['neutron', 'photon'])
|
||||
|
||||
tally = openmc.Tally()
|
||||
tally.filters = [mesh_filter, energy_filter, particle_filter]
|
||||
tally.scores = ['flux']
|
||||
|
||||
model.tallies.append(tally)
|
||||
|
||||
return model
|
||||
|
||||
|
||||
def test_weightwindows(model):
|
||||
|
||||
ww_files = ('ww_n.txt', 'ww_p.txt')
|
||||
cwd = Path(__file__).parent.absolute()
|
||||
filepaths = [cwd / Path(f) for f in ww_files]
|
||||
|
||||
with cdtemp(filepaths):
|
||||
# run once with variance reduction off
|
||||
model.settings.weight_windows_on = False
|
||||
analog_sp = model.run()
|
||||
os.rename(analog_sp, 'statepoint.analog.h5')
|
||||
|
||||
# weight windows
|
||||
|
||||
# load pre-generated weight windows
|
||||
# (created using the same tally as above)
|
||||
ww_n_lower_bnds = np.loadtxt('ww_n.txt')
|
||||
ww_p_lower_bnds = np.loadtxt('ww_p.txt')
|
||||
|
||||
# create a mesh matching the one used
|
||||
# to generate the weight windows
|
||||
ww_mesh = openmc.RegularMesh()
|
||||
ww_mesh.lower_left = (-240, -240, -240)
|
||||
ww_mesh.upper_right = (240, 240, 240)
|
||||
ww_mesh.dimension = (5, 6, 7)
|
||||
|
||||
# energy bounds matching those of the
|
||||
# generated weight windows
|
||||
e_bnds = [0.0, 0.5, 2E7]
|
||||
|
||||
ww_n = openmc.WeightWindows(ww_mesh,
|
||||
ww_n_lower_bnds,
|
||||
None,
|
||||
10.0,
|
||||
e_bnds,
|
||||
survival_ratio=1.01)
|
||||
|
||||
ww_p = openmc.WeightWindows(ww_mesh,
|
||||
ww_p_lower_bnds,
|
||||
None,
|
||||
10.0,
|
||||
e_bnds,
|
||||
survival_ratio=1.01)
|
||||
|
||||
model.settings.weight_windows = [ww_n, ww_p]
|
||||
|
||||
|
||||
# run again with variance reduction on
|
||||
model.settings.weight_windows_on = True
|
||||
ww_sp = model.run()
|
||||
os.rename(ww_sp, 'statepoint.ww.h5')
|
||||
|
||||
# load both statepoints and examine results
|
||||
asp = openmc.StatePoint('statepoint.analog.h5')
|
||||
wsp = openmc.StatePoint('statepoint.ww.h5')
|
||||
|
||||
analog_tally = asp.tallies[1]
|
||||
ww_tally = wsp.tallies[1]
|
||||
|
||||
def compare_results(particle, analog_tally, ww_tally):
|
||||
# get values from each of the tallies
|
||||
an_mean = analog_tally.get_values(filters=[openmc.ParticleFilter],
|
||||
filter_bins=[(particle,)])
|
||||
ww_mean = ww_tally.get_values(filters=[openmc.ParticleFilter],
|
||||
filter_bins=[(particle,)])
|
||||
|
||||
# expect that more bins were scored with weight windows than
|
||||
# the analog run
|
||||
assert np.count_nonzero(an_mean) < np.count_nonzero(ww_mean)
|
||||
|
||||
an_rel_err = analog_tally.get_values(filters=[openmc.ParticleFilter],
|
||||
filter_bins=[(particle,)],
|
||||
value='rel_err')
|
||||
ww_rel_err = ww_tally.get_values(filters=[openmc.ParticleFilter],
|
||||
filter_bins=[(particle,)],
|
||||
value='rel_err')
|
||||
|
||||
an_rel_err[an_mean == 0.0] = 1.0
|
||||
ww_rel_err[ww_mean == 0.0] = 1.0
|
||||
|
||||
an_avg_rel_err = np.mean(an_rel_err)
|
||||
ww_avg_rel_err = np.mean(ww_rel_err)
|
||||
|
||||
# expect that the average relative error in the tally
|
||||
# decreases
|
||||
assert an_avg_rel_err > ww_avg_rel_err
|
||||
|
||||
# ensure that the value of the mesh bin containing the
|
||||
# source is statistically similar in both runs
|
||||
an_std_dev = analog_tally.get_values(filters=[openmc.ParticleFilter],
|
||||
filter_bins=[(particle,)],
|
||||
value='std_dev')
|
||||
ww_std_dev = ww_tally.get_values(filters=[openmc.ParticleFilter],
|
||||
filter_bins=[(particle,)],
|
||||
value='std_dev')
|
||||
|
||||
# index of the mesh bin containing the source for the higher
|
||||
# energy group
|
||||
source_bin_idx = (an_mean.shape[0]//2, 0, 0)
|
||||
|
||||
an_source_bin = ufloat(an_mean[source_bin_idx],
|
||||
an_std_dev[source_bin_idx])
|
||||
ww_source_bin = ufloat(ww_mean[source_bin_idx],
|
||||
ww_std_dev[source_bin_idx])
|
||||
|
||||
diff = an_source_bin - ww_source_bin
|
||||
|
||||
# check that values are within two combined standard deviations
|
||||
assert abs(diff.nominal_value) / diff.std_dev < 2.0
|
||||
|
||||
compare_results('neutron', analog_tally, ww_tally)
|
||||
compare_results('photon', analog_tally, ww_tally)
|
||||
1
tests/unit_tests/weightwindows/ww_n.txt
Symbolic link
1
tests/unit_tests/weightwindows/ww_n.txt
Symbolic link
|
|
@ -0,0 +1 @@
|
|||
../../regression_tests/weightwindows/ww_n.txt
|
||||
1
tests/unit_tests/weightwindows/ww_p.txt
Symbolic link
1
tests/unit_tests/weightwindows/ww_p.txt
Symbolic link
|
|
@ -0,0 +1 @@
|
|||
../../regression_tests/weightwindows/ww_p.txt
|
||||
Loading…
Add table
Add a link
Reference in a new issue