MOX Vapor Pressure Calculation

Parsed Function Material with automatic derivatives.

Description

Vapor pressure, which is a component of the pore velocity calculation is performed by the [MOXVaporPressure]class.

Specifically, is the summation of the vapor pressure terms from the following fuel constituents: UO, PuO2, UO, U, UO, PuO, Pu, AmO, Am, AmO, and O. For = Pu concentration, = Am concentration, = deviation from stoichiometry of the metal oxide (MO), = partial pressure of oxygen (which is calculated in MOXOxygenPartialPressure along with its integral with respect to the O/M ratio), and Gibbs free energy via the Rand-Markin model (s defined subsequently), the following equations are the vapor pressure terms as a function of temperature (), from Ikusawa et al. (2014) (with corrections from the authors): (1)

The Gibbs free energy depends on the chemistry of the fuel: (2)

The pressure that goes into the velocity calculation in MOXPoreVelocityVaporPressure is the sum of these individual vapor pressures: (3) and the derivative of this term with respect to temperature () is also used in MOXPoreVelocityVaporPressure

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.

  • f_namePsumBase name of the free energy function (used to name the material properties)

    Default:Psum

    C++ Type:std::string

    Description:Base name of the free energy function (used to name the material properties)

  • derivative_order3Maximum order of derivatives taken

    Default:3

    C++ Type:unsigned int

    Description:Maximum order of derivatives taken

  • q0.2Pu concentration

    Default:0.2

    C++ Type:double

    Description:Pu concentration

  • r0.05Am concentration

    Default:0.05

    C++ Type:double

    Description:Am concentration

  • x0.02MOX deviation

    Default:0.02

    C++ Type:double

    Description:MOX 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

  • fail_on_evalerrorFalseFail fatally if a function evaluation returns an error code (otherwise just pass on NaN)

    Default:False

    C++ Type:bool

    Description:Fail fatally if a function evaluation returns an error code (otherwise just pass on NaN)

  • 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.

  • enable_jitTrueEnable just-in-time compilation of function expressions for faster evaluation

    Default:True

    C++ Type:bool

    Description:Enable just-in-time compilation of function expressions for faster evaluation

  • 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

  • enable_auto_optimizeTrueEnable automatic immediate optimization of derivatives

    Default:True

    C++ Type:bool

    Description:Enable automatic immediate optimization of derivatives

  • disable_fpoptimizerFalseDisable the function parser algebraic optimizer

    Default:False

    C++ Type:bool

    Description:Disable the function parser algebraic optimizer

  • enable_ad_cacheTrueEnable cacheing of function derivatives for faster startup time

    Default:True

    C++ Type:bool

    Description:Enable cacheing of function derivatives for faster startup time

  • 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

Outputs Parameters

Input Files

References

  1. Yoshihisa Ikusawa, Takayuki Ozawa, Shun Hirooka, Koji Maeda, Masato Kato, and Seiichiro Maeda. Development and verification of the thermal behavior analysis code for ma containing mox fuels. In International Conference on Nuclear Engineering. Prague, Czech Republic, July 7–11 2014.[BibTeX]