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f5900293fa
Co-authored-by: Jin Whan Bae <baej@ornl.gov> Co-authored-by: shimwell <mail@jshimwell.com> Co-authored-by: Jonathan Shimwell <drshimwell@gmail.com> Co-authored-by: Olek <45364492+yardasol@users.noreply.github.com> Co-authored-by: Paul Romano <paul.k.romano@gmail.com>
111 lines
3.5 KiB
Python
111 lines
3.5 KiB
Python
"""Basic unit tests for openmc.deplete.IndependentOperator instantiation
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Modifies and resets environment variable OPENMC_CROSS_SECTIONS
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to a custom file with new depletion_chain node
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"""
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from os import remove
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from pathlib import Path
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import pytest
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from openmc.deplete import MicroXS
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import numpy as np
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ONE_GROUP_XS = Path(__file__).parents[1] / "micro_xs_simple.csv"
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def test_from_array():
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nuclides = [
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'U234',
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'U235',
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'U238',
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'U236',
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'O16',
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'O17',
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'I135',
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'Xe135',
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'Xe136',
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'Cs135',
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'Gd157',
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'Gd156']
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reactions = ['fission', '(n,gamma)']
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# These values are placeholders and are not at all
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# physically meaningful.
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data = np.array([[0.1, 0.],
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[0.1, 0.],
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[0.9, 0.],
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[0.4, 0.],
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[0., 0.],
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[0., 0.],
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[0., 0.1],
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[0., 0.9],
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[0., 0.],
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[0., 0.],
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[0., 0.1],
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[0., 0.1]])
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data.shape = (12, 2, 1)
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MicroXS(data, nuclides, reactions)
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with pytest.raises(ValueError, match=r'Nuclides list of length \d* and '
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r'reactions array of length \d* do not '
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r'match dimensions of data array of shape \(\d*\, \d*\)'):
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MicroXS(data[:, 0], nuclides, reactions)
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def test_csv():
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ref_xs = MicroXS.from_csv(ONE_GROUP_XS)
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ref_xs.to_csv('temp_xs.csv')
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temp_xs = MicroXS.from_csv('temp_xs.csv')
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assert np.all(ref_xs.data == temp_xs.data)
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remove('temp_xs.csv')
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def test_from_multigroup_flux():
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energies = [0., 6.25e-1, 5.53e3, 8.21e5, 2.e7]
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flux = [1.1e-7, 1.2e-6, 1.3e-5, 1.4e-4]
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chain_file = Path(__file__).parents[1] / 'chain_simple.xml'
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kwargs = {'multigroup_flux': flux, 'chain_file': chain_file}
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# test with energy group structure from string
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microxs = MicroXS.from_multigroup_flux(energies='CASMO-4', **kwargs)
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assert isinstance(microxs, MicroXS)
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# test with energy group structure as floats
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microxs = MicroXS.from_multigroup_flux(energies=energies, **kwargs)
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assert isinstance(microxs, MicroXS)
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# test with nuclides provided
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microxs = MicroXS.from_multigroup_flux(
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energies=energies, nuclides=['Gd157', 'H1'], **kwargs
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)
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assert isinstance(microxs, MicroXS)
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assert microxs.nuclides == ['Gd157', 'H1']
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# test with reactions provided
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microxs = MicroXS.from_multigroup_flux(
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energies=energies, reactions=['fission', '(n,2n)'], **kwargs
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)
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assert isinstance(microxs, MicroXS)
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assert microxs.reactions == ['fission', '(n,2n)']
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def test_multigroup_flux_same():
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chain_file = Path(__file__).parents[1] / 'chain_simple.xml'
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# Generate micro XS based on 4-group flux
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energies = [0., 6.25e-1, 5.53e3, 8.21e5, 2.e7]
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flux_per_ev = [0.3, 0.3, 1.0, 1.0]
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flux = flux_per_ev * np.diff(energies)
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microxs_4g = MicroXS.from_multigroup_flux(
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energies=energies, multigroup_flux=flux, chain_file=chain_file)
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# Generate micro XS based on 2-group flux, where the boundaries line up with
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# the 4 group flux and have the same flux per eV across the full energy
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# range
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energies = [0., 5.53e3, 2.0e7]
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flux_per_ev = [0.3, 1.0]
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flux = flux_per_ev * np.diff(energies)
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microxs_2g = MicroXS.from_multigroup_flux(
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energies=energies, multigroup_flux=flux, chain_file=chain_file)
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assert microxs_4g.data == pytest.approx(microxs_2g.data)
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