# 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.
"""
Uranium metal
Much info is from [AAAFuels]_.
.. [AAAFuels] Kim, Y S, and Hofman, G L. AAA fuels handbook.. United States: N. p., 2003. Web. doi:10.2172/822554. .
"""
from armi.materials.material import Material
from armi.utils.units import getTk
[docs]class Uranium(Material):
name = "Uranium"
materialIntro = ""
propertyNotes = {"thermal conductivity": ""}
propertyRawData = {"thermal conductivity": ""}
propertyUnits = {"thermal conductivity": "W/m-K"}
propertyEquation = {
"thermal conductivity": "21.73 + 0.01591T + 5.907×10<super>-6</super>T<super>2</super>"
}
propertyValidTemperature = {"thermal conductivity": ((255.4, 1173.2), "K")}
references = {
"thermal conductivity": ["AAA Fuels Handbook by YS Kim and G.L. Hofman, ANL"]
}
[docs] def thermalConductivity(self, Tk: float = None, Tc: float = None) -> float:
"""The thermal conductivity of pure U in W-m/K."""
Tk = getTk(Tc, Tk)
self.checkPropertyTempRange("thermal conductivity", Tk)
kU = 21.73 + (0.01591 * Tk) + (0.000005907 * Tk ** 2)
return kU