Hydrogen Time Derivative

Time derivative for species where the volume fraction of the phase is time-dependent.

note:Often Created by an Action

This object can be set up automatically by using the CladdingHydrides action.

Description

The HydrogenTimeDerivative kernel calculates the evolution of hydrogen dissolved in metal phase when hydrogen in the hydride phase is present. This class couples with the HydridePrecipitationRate, which calculates the hydride volume fraction evolution.

The time derivative of the hydrogen concentration is calculated as (1) where is the volume fraction of the metal zirconium phase, is the concentration of hydrogen dissolved in the metal phase, is a conversion factor from ppm to volume fraction, and is the hydride concentration in ppm.

Example Input Syntax


[./dHdt]
  type = HydrogenTimeDerivative
  variable = hydrogen_in_solution_ppm
  hydrogen_as_hydride_ppm = hydrogen_as_hydride_ppm
[../]
(test/tests/hydride/sink_source_kernel/dissolution.i)

Input Parameters

  • hydrogen_as_hydride_ppmThe concentration of hydrogen as hydride in wt.ppm

    C++ Type:std::vector

    Description:The concentration of hydrogen as hydride in wt.ppm

  • variableThe name of the variable that this Kernel operates on

    C++ Type:NonlinearVariableName

    Description:The name of the variable that this Kernel operates on

Required Parameters

  • hydride_clamp1Maximum volume fraction of hydride.

    Default:1

    C++ Type:double

    Description:Maximum volume fraction of hydride.

  • lumpingFalseTrue for mass matrix lumping, false otherwise

    Default:False

    C++ Type:bool

    Description:True for mass matrix lumping, false otherwise

  • 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.

  • save_inThe name of auxiliary variables to save this Kernel's residual contributions to. Everything about that variable must match everything about this variable (the type, what blocks it's on, etc.)

    C++ Type:std::vector

    Description:The name of auxiliary variables to save this Kernel's residual contributions to. Everything about that variable must match everything about this variable (the type, what blocks it's on, etc.)

  • 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

  • diag_save_inThe name of auxiliary variables to save this Kernel's diagonal Jacobian contributions to. Everything about that variable must match everything about this variable (the type, what blocks it's on, etc.)

    C++ Type:std::vector

    Description:The name of auxiliary variables to save this Kernel's diagonal Jacobian contributions to. Everything about that variable must match everything about this variable (the type, what blocks it's on, etc.)

  • 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

Advanced Parameters

  • vector_tagstimeThe tag for the vectors this Kernel should fill

    Default:time

    C++ Type:MultiMooseEnum

    Description:The tag for the vectors this Kernel should fill

  • extra_vector_tagsThe extra tags for the vectors this Kernel should fill

    C++ Type:std::vector

    Description:The extra tags for the vectors this Kernel should fill

  • matrix_tagssystem timeThe tag for the matrices this Kernel should fill

    Default:system time

    C++ Type:MultiMooseEnum

    Description:The tag for the matrices this Kernel should fill

  • extra_matrix_tagsThe extra tags for the matrices this Kernel should fill

    C++ Type:std::vector

    Description:The extra tags for the matrices this Kernel should fill

Tagging Parameters

Input Files

References