Fission Rate From Power Density

Compute fission rate based on power density.

Description

Like FissionRateAux, the FissionRateFromPowerDensity AuxKernel sets the fission rate based on a function and a scaling factor. This AuxKernel is intended to be used specifically in the case where the input function defines the power density (in W/m). The power density is divided by a user-provided constant, energy_per_fission (J/fission), to provide the fission rate in (fissions/m/s).

Example Input Syntax


[AuxKernels]
  [./fissionrate]
    type = FissionRateFromPowerDensity
    variable = fission_rate
    function = powerdensity
    energy_per_fission = 3.2e-11
  [../]
[]
(test/tests/fission_rate_from_power_density/fission_rate_from_power_density_test.i)

Input Parameters

  • functionThe function that describes the power density in W/m^3.

    C++ Type:FunctionName

    Description:The function that describes the power density in W/m^3.

  • variableThe name of the variable that this object applies to

    C++ Type:AuxVariableName

    Description:The name of the variable that this object applies to

  • energy_per_fissionEnergy in Joules per fission

    C++ Type:double

    Description:Energy in Joules per fission

Required Parameters

  • execute_onLINEARThe list of flag(s) indicating when this object should be executed, the available options include NONE, INITIAL, LINEAR, NONLINEAR, TIMESTEP_END, TIMESTEP_BEGIN, FINAL, CUSTOM.

    Default:LINEAR

    C++ Type:ExecFlagEnum

    Description:The list of flag(s) indicating when this object should be executed, the available options include NONE, INITIAL, LINEAR, NONLINEAR, TIMESTEP_END, TIMESTEP_BEGIN, FINAL, CUSTOM.

  • 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

  • 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.

  • enableTrueSet the enabled status of the MooseObject.

    Default:True

    C++ Type:bool

    Description:Set the enabled status of the MooseObject.

  • seed0The seed for the master random number generator

    Default:0

    C++ Type:unsigned int

    Description:The seed for the master random number generator

  • 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.

Advanced Parameters

Input Files