Neutron Heat Source

Compute heat generation due to fission.

Description

The NeutronHeatSource kernel is for the volumetric heat source associated with fission: (1) where is the energy released in a single fission event, and is the volumetric fission rate. can be prescribed as a function of time and space, or input from a separate neutronics calculation.

Example Input Syntax


[./heat_source]
  type = NeutronHeatSource
  variable = T
  energy_per_fission = 3.2e-11
  fission_rate = fission_rate
[../]
(test/tests/carbon_monoxide_production/carbon_monoxide_production_test.i)

Input Parameters

  • 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

  • rod_ave_lin_powFunction describing rod average linear power

    C++ Type:FunctionName

    Description:Function describing rod average linear power

  • fission_rateCoupled Fission Rate

    C++ Type:std::vector

    Description:Coupled Fission Rate

  • areaCross sectional area

    C++ Type:double

    Description:Cross sectional area

  • decay_heat_functionPostprocessor giving the decay heat curve

    C++ Type:PostprocessorName

    Description:Postprocessor giving the decay heat curve

  • max_fission_rateCoupled Max Fission Rate

    C++ Type:std::vector

    Description:Coupled Max Fission Rate

  • axial_profileFunction describing the axial profile of power

    C++ Type:FunctionName

    Description:Function describing the axial profile of power

  • axial_relocation_objectName of the AxialRelocationUserObject that determines whether the fuel has crumbled.

    C++ Type:UserObjectName

    Description:Name of the AxialRelocationUserObject that determines whether the fuel has crumbled.

  • fuel_pin_geometryName of the UserObject that reads the pin geometry from the mesh.

    C++ Type:UserObjectName

    Description:Name of the UserObject that reads the pin geometry from the mesh.

  • outer_diameterOuter diameter

    C++ Type:double

    Description:Outer diameter

  • fraction1Fraction of power applied

    Default:1

    C++ Type:double

    Description:Fraction of power applied

  • inner_diameter0Inner diameter

    Default:0

    C++ Type:double

    Description:Inner diameter

  • energy_per_fission3.28451e-11Energy Released per Fission

    Default:3.28451e-11

    C++ Type:double

    Description:Energy Released per Fission

  • burnup_functionBurnup function

    C++ Type:BurnupFunctinName

    Description:Burnup function

  • 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_tagsnontimeThe tag for the vectors this Kernel should fill

    Default:nontime

    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_tagssystemThe tag for the matrices this Kernel should fill

    Default:system

    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