armi.materials.yttriumOxide module

Yttrium Oxide

class armi.materials.yttriumOxide.Y2O3

Bases: armi.materials.material.Material

name = 'Y2O3'

setDefaultMassFracs()

mass fractions

density(Tk=None, Tc=None)

Return density that preserves mass when thermally expanded in 2D.

Warning

This density will not agree with the component density since this method only expands in 2 dimensions. The component has been manually expanded axially with the manually entered block hot height. The density returned by this should be a factor of 1 + dLL higher than the density on the component. density3 should be in agreement at both cold and hot temperatures as long as the block height is correct for the specified temperature. In the case of Fluids, density and density3 are the same as density is not driven by linear expansion, but rather an exilicit density function dependent on Temperature. linearExpansionPercent is zero for a fluid.

See also

armi.materials.density3

component density should be in agreement with this density

armi.reactor.blueprints._applyBlockDesign

2D expansion and axial density reduction occurs here.

linearExpansionPercent(Tk=None, Tc=None)

Return the linear expansion percent for Yttrium Oxide (Yttria).

Notes

From Table 5 of “Thermal Expansion and Phase Inversion of Rare-Earth Oxides.

paramCollectionType

alias of armi.reactor.parameters.parameterCollections.MaterialParameterCollection