# 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.
"""
Thorium Metal.
Data is from [IAEA-TECDOCT-1450]_.
.. [IAEA-TECDOCT-1450] Thorium fuel cycle -- Potential benefits and challenges, IAEA-TECDOC-1450 (2005).
https://www-pub.iaea.org/mtcd/publications/pdf/te_1450_web.pdf
"""
from armi.materials.material import FuelMaterial
from armi.utils.units import getTk
[docs]class Thorium(FuelMaterial):
propertyValidTemperature = {"linear expansion": ((30, 600), "K")}
def __init__(self):
FuelMaterial.__init__(self)
self.refDens = 11.68
[docs] def setDefaultMassFracs(self):
self.setMassFrac("TH232", 1.0)
[docs] def linearExpansion(self, Tk=None, Tc=None):
r"""Linear Expansion in m/m/K from IAEA TECDOC 1450."""
Tk = getTk(Tc, Tk)
self.checkPropertyTempRange("linear expansion", Tk)
return 11.9e-6
[docs] def thermalConductivity(self, Tk=None, Tc=None):
r"""W/m-K from IAEA TE 1450."""
return 43.1
[docs] def meltingPoint(self):
"""Melting point in K from IAEA TE 1450."""
return 2025.0