MOX Oxygen Partial Pressure Calculation

Calculates oxygen partial pressure and corresponding integral. Used with material MOXVaporPressure and MOXPoreVelocityVaporPressure.

Description

The calculation for pore speed requires the partial pressure of oxygen, which is calculated using this class [MOXOxygenPartialPressure]. From Kato et al. (2017): (1) where the third term, has the definition (2) where for MOX fuel (3) while for Am-MOX fuel (4) This nonlinear equation is solved by providing a value for O/M, then using a bisect method to determine the corresponding value of . The numeric integral of is also calculated here for use with MOXPartialPressure where the constituent vapor pressures, their sum and derivative with respect to temperature are then used in MOXPoreVelocityPartialPressure.

under construction

This class is still under development!

See bison/test/mox_pore_velocity/ for examples of how this class should be used.

Input Parameters

• temperatureCoupled Temperature

C++ Type:std::vector

Description:Coupled Temperature

Required Parameters

• computeTrueWhen false, MOOSE will not call compute methods on this material. The user must call computeProperties() after retrieving the Material via MaterialPropertyInterface::getMaterial(). Non-computed Materials are not sorted for dependencies.

Default:True

C++ Type:bool

Description:When false, MOOSE will not call compute methods on this material. The user must call computeProperties() after retrieving the Material via MaterialPropertyInterface::getMaterial(). Non-computed Materials are not sorted for dependencies.

• po2_initial1e-08Initial value

Default:1e-08

C++ Type:double

Description:Initial value

• R8.31441Universal gas constant

Default:8.31441

C++ Type:double

Description:Universal gas constant

• plutonium_content0.325Plutonium content

Default:0.325

C++ Type:double

Description:Plutonium content

• o2m_deviation0.02Oxygen to metal deviation

Default:0.02

C++ Type:double

Description:Oxygen to metal deviation

• boundaryThe list of boundary IDs from the mesh where this boundary condition applies

C++ Type:std::vector

Description:The list of boundary IDs from the mesh where this boundary condition applies

• blockThe list of block ids (SubdomainID) that this object will be applied

C++ Type:std::vector

Description:The list of block ids (SubdomainID) that this object will be applied

Optional Parameters

• enableTrueSet the enabled status of the MooseObject.

Default:True

C++ Type:bool

Description:Set the enabled status of the MooseObject.

• use_displaced_meshFalseWhether or not this object should use the displaced mesh for computation. Note that in the case this is true but no displacements are provided in the Mesh block the undisplaced mesh will still be used.

Default:False

C++ Type:bool

Description:Whether or not this object should use the displaced mesh for computation. Note that in the case this is true but no displacements are provided in the Mesh block the undisplaced mesh will still be used.

• control_tagsAdds user-defined labels for accessing object parameters via control logic.

C++ Type:std::vector

Description:Adds user-defined labels for accessing object parameters via control logic.

• seed0The seed for the master random number generator

Default:0

C++ Type:unsigned int

Description:The seed for the master random number generator

• implicitTrueDetermines whether this object is calculated using an implicit or explicit form

Default:True

C++ Type:bool

Description:Determines whether this object is calculated using an implicit or explicit form

• constant_onNONEWhen ELEMENT, MOOSE will only call computeQpProperties() for the 0th quadrature point, and then copy that value to the other qps.When SUBDOMAIN, MOOSE will only call computeSubdomainProperties() for the 0th quadrature point, and then copy that value to the other qps. Evaluations on element qps will be skipped

Default:NONE

C++ Type:MooseEnum

Description:When ELEMENT, MOOSE will only call computeQpProperties() for the 0th quadrature point, and then copy that value to the other qps.When SUBDOMAIN, MOOSE will only call computeSubdomainProperties() for the 0th quadrature point, and then copy that value to the other qps. Evaluations on element qps will be skipped

Advanced Parameters

• output_propertiesList of material properties, from this material, to output (outputs must also be defined to an output type)

C++ Type:std::vector

Description:List of material properties, from this material, to output (outputs must also be defined to an output type)

• outputsnone Vector of output names were you would like to restrict the output of variables(s) associated with this object

Default:none

C++ Type:std::vector

Description:Vector of output names were you would like to restrict the output of variables(s) associated with this object

References

1. M. Kato, M. Watanabe, T. Matsumoto, and S. Hirooka. Oxygen potentials, oxygen diffusion coefficients and defect equilibria on nonstoichiometric (U,Pu)O(2+-x). Journal of Nuclear Materials, 487:424â€“432, 2017. URL: http://www.sciencedirect.com/science/article/pii/S0022311516312582, doi:https://doi.org/10.1016/j.jnucmat.2017.01.056.[BibTeX]