Source code for armi.physics.fuelPerformance.tests.test_fuelPerformanceUtils

# Copyright 2019 TerraPower, LLC
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#     http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
"""Tests for fuel performance utilities."""
import unittest

from armi.physics.fuelPerformance import utils
from armi.reactor.flags import Flags
from armi.reactor.tests import test_blocks


[docs]class TestFuelPerformanceUtils(unittest.TestCase):
[docs]    def test_applyFuelDisplacement(self):
        displacement = 0.01
        block = test_blocks.loadTestBlock()
        fuel = block.getComponent(Flags.FUEL)
        originalHotODInCm = fuel.getDimension("od")
        utils.applyFuelDisplacement(block, displacement)
        finalHotODInCm = fuel.getDimension("od")

        self.assertAlmostEqual(finalHotODInCm, originalHotODInCm + 2 * displacement)

[docs]    def test_gasConductivityCorrection_morph0(self):
        temp = 500  # C
        porosity = 0.4

        # No correction
        chi = utils.gasConductivityCorrection(temp, porosity, 0)

        ref = 1.0
        self.assertAlmostEqual(chi, ref, 5)

[docs]    def test_gasConductivityCorrection_morph1(self):
        temp = 500  # C
        porosity = 0.4

        # Irregular Porosity, Bauer equation
        chi = utils.gasConductivityCorrection(temp, porosity, 1)

        ref = (1.0 - porosity) ** (1.5 * 1.00)
        self.assertAlmostEqual(chi, ref, 5)

[docs]    def test_gasConductivityCorrection_morph2(self):
        temp = 500  # C
        porosity = 0.4

        # Irregular Porosity, Bauer equation
        chi = utils.gasConductivityCorrection(temp, porosity, 2)

        ref = (1.0 - porosity) ** (1.5 * 1.72)
        self.assertAlmostEqual(chi, ref, 5)

[docs]    def test_gasConductivityCorrection_morph3(self):
        temp = 500  # C
        porosity = 0.4

        # Mixed Morphology, low temp
        chi = utils.gasConductivityCorrection(temp, porosity, 3)
        ref = (1.0 - porosity) ** (1.5 * 1.72)
        self.assertAlmostEqual(chi, ref, 5)

        # Mixed Morphology, high temp
        temp = 700
        chi = utils.gasConductivityCorrection(temp, porosity, 3)
        ref = (1.0 - porosity) ** (1.5 * 1.00)
        self.assertAlmostEqual(chi, ref, 5)

[docs]    def test_gasConductivityCorrection_morph4(self):
        temp = 500  # C
        porosity = 0.4

        # maxwell-eucken
        chi = utils.gasConductivityCorrection(temp, porosity, 4)

        ref = (1.0 - porosity) / (1.0 + 1.5 * porosity)
        self.assertAlmostEqual(chi, ref, 5)