Fission Rate AuxKernel for Mixed Oxide Fuel

Compute fission rate for right circular cylinder fast MOX fuel taking porosity into account.

Description

FissionRateMOX is designed to calculate fission rate given rod averaged linear power and pellet dimensions and porosity as a coupled variable. The fission rate is scaled by the following term: (1)

Example Input Syntax


[AuxKernels]
  [./pore_speed_aux]
    type = MaterialRealAux
    variable = pore_speed_aux
    property = pore_velocity
    block = fuel
    execute_on = 'initial timestep_end'
  [../]
  [./fission_rate_aux_kernel_mox]
    type = FissionRateMOX
    variable = fission_rate_aux_variable_mox
    block = fuel
    porosity = pore
    initial_porosity = 0.12
    rod_ave_lin_pow = power_history1
    pellet_diameter = 0.0082
    pellet_inner_diameter = 0
    energy_per_fission = 3.2e-11
    execute_on = 'initial timestep_end'
  [../]
  #[./grad_temp_x_aux]
  #  type = VariableGradientComponent
  #  variable = grad_temp_x
  #  component = x
  #  gradient_variable = temp
  #  execute_on = 'initial timestep_end'
  #[../]
[]
(test/tests/mox_pore_velocity/check_MOXPoreVelocity.i)

Input Parameters

  • variableThe name of the variable that this object applies to

    C++ Type:AuxVariableName

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

  • pellet_diameterFuel pellet diameter in m

    C++ Type:double

    Description:Fuel pellet diameter in m

Required Parameters

  • axial_power_profileThe axial power profile function.

    C++ Type:FunctionName

    Description:The axial power profile function.

  • initial_porosity0Initial porosity. Must be the same as the initial condition in the variable block.

    Default:0

    C++ Type:double

    Description:Initial porosity. Must be the same as the initial condition in the variable block.

  • pellet_inner_diameter0Pellet inner diameter in m for an annular pellet

    Default:0

    C++ Type:double

    Description:Pellet inner diameter in m for an annular pellet

  • fuel_volume_ratio1Reduction factor for deviation from right circular cylinder fuel. The ratio of actual volume to right circular cylinder volume.

    Default:1

    C++ Type:double

    Description:Reduction factor for deviation from right circular cylinder fuel. The ratio of actual volume to right circular cylinder volume.

  • value1

    Default:1

    C++ Type:double

  • radial_power_profileThe radial power profile function.

    C++ Type:FunctionName

    Description:The radial power profile function.

  • porosityCoupled porosity

    C++ Type:std::vector

    Description:Coupled porosity

  • rod_ave_lin_powThe rod power history function.

    C++ Type:FunctionName

    Description:The rod power history function.

  • 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

  • energy_per_fission3.28451e-11energy per fission in J/fission

    Default:3.28451e-11

    C++ Type:double

    Description:energy per fission in J/fission

  • 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