- boundaryBoundary ID(s) for which to compute the postprocessor
C++ Type:std::vector<int>
Unit:(no unit assumed)
Controllable:No
Description:Boundary ID(s) for which to compute the postprocessor
NekHeatFluxIntegral
Heat flux over a boundary in the NekRS mesh
Description
This postprocessor computes the heat flux over a boundary in the NekRS mesh,
where is the value of the postprocessor, is the boundary of the NekRS mesh, is the fluid thermal conductivity, is the fluid temperature, and is the surface unit normal.
The boundaries over which to compute this postprocessor in the NekRS mesh are specified with the boundary parameter; these boundaries are the sidesets in NekRS's mesh (i.e. the .re2 file). You can specify more than one boundary, with syntax such as boundary = '1 2'. To be clear, this postprocessor is not evaluated on the NekRSMesh mesh mirror, but instead on the mesh actually used for computation in NekRS.
If running NekRS in non-dimensional form (and you have indicated the appropriate nondimensional scales by setting nondimensional = true for the [Problem], then the value of this postprocessor is shown in dimensional units. On the otherhand, NekRS scalars (scalar01, scalar02 or scalar03) are never dimensionalized because their dimensions are problem-dependent.
Example Input Syntax
As an example, the pin_flux_in_nek and duct_flux_in_nek postprocessors below will evaluate the heat flux over two different boundaries in NekRS's mesh.
[Postprocessors]
[pin_flux_in_nek]
type = NekHeatFluxIntegral
boundary = '1'
[]
[duct_flux_in_nek]
type = NekHeatFluxIntegral
boundary = '2'
[]
[max_nek_T]
type = NekVolumeExtremeValue
field = temperature
value_type = max
[]
[min_nek_T]
type = NekVolumeExtremeValue
field = temperature
value_type = min
[]
[]
Input Parameters
- execute_onTIMESTEP_ENDThe list of flag(s) indicating when this object should be executed. For a description of each flag, see https://mooseframework.inl.gov/source/interfaces/SetupInterface.html.
Default:TIMESTEP_END
C++ Type:ExecFlagEnum
Unit:(no unit assumed)
Controllable:No
Description:The list of flag(s) indicating when this object should be executed. For a description of each flag, see https://mooseframework.inl.gov/source/interfaces/SetupInterface.html.
- meshallNekRS mesh to compute postprocessor on
Default:all
C++ Type:MooseEnum
Unit:(no unit assumed)
Controllable:No
Description:NekRS mesh to compute postprocessor on
- prop_getter_suffixAn optional suffix parameter that can be appended to any attempt to retrieve/get material properties. The suffix will be prepended with a '_' character.
C++ Type:MaterialPropertyName
Unit:(no unit assumed)
Controllable:No
Description:An optional suffix parameter that can be appended to any attempt to retrieve/get material properties. The suffix will be prepended with a '_' character.
- use_interpolated_stateFalseFor the old and older state use projected material properties interpolated at the quadrature points. To set up projection use the ProjectedStatefulMaterialStorageAction.
Default:False
C++ Type:bool
Unit:(no unit assumed)
Controllable:No
Description:For the old and older state use projected material properties interpolated at the quadrature points. To set up projection use the ProjectedStatefulMaterialStorageAction.
Optional Parameters
- allow_duplicate_execution_on_initialFalseIn the case where this UserObject is depended upon by an initial condition, allow it to be executed twice during the initial setup (once before the IC and again after mesh adaptivity (if applicable).
Default:False
C++ Type:bool
Unit:(no unit assumed)
Controllable:No
Description:In the case where this UserObject is depended upon by an initial condition, allow it to be executed twice during the initial setup (once before the IC and again after mesh adaptivity (if applicable).
- control_tagsAdds user-defined labels for accessing object parameters via control logic.
C++ Type:std::vector<std::string>
Unit:(no unit assumed)
Controllable:No
Description:Adds user-defined labels for accessing object parameters via control logic.
- enableTrueSet the enabled status of the MooseObject.
Default:True
C++ Type:bool
Unit:(no unit assumed)
Controllable:Yes
Description:Set the enabled status of the MooseObject.
- execution_order_group0Execution order groups are executed in increasing order (e.g., the lowest number is executed first). Note that negative group numbers may be used to execute groups before the default (0) group. Please refer to the user object documentation for ordering of user object execution within a group.
Default:0
C++ Type:int
Unit:(no unit assumed)
Controllable:No
Description:Execution order groups are executed in increasing order (e.g., the lowest number is executed first). Note that negative group numbers may be used to execute groups before the default (0) group. Please refer to the user object documentation for ordering of user object execution within a group.
- force_postauxFalseForces the UserObject to be executed in POSTAUX
Default:False
C++ Type:bool
Unit:(no unit assumed)
Controllable:No
Description:Forces the UserObject to be executed in POSTAUX
- force_preauxFalseForces the UserObject to be executed in PREAUX
Default:False
C++ Type:bool
Unit:(no unit assumed)
Controllable:No
Description:Forces the UserObject to be executed in PREAUX
- force_preicFalseForces the UserObject to be executed in PREIC during initial setup
Default:False
C++ Type:bool
Unit:(no unit assumed)
Controllable:No
Description:Forces the UserObject to be executed in PREIC during initial setup
- outputsVector of output names where you would like to restrict the output of variables(s) associated with this object
C++ Type:std::vector<OutputName>
Unit:(no unit assumed)
Controllable:No
Description:Vector of output names where you would like to restrict the output of variables(s) associated with this object
- 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
Unit:(no unit assumed)
Controllable:No
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
- (test/tests/nek_standalone/ethier/nek.i)
- (tutorials/gas_compact_cht/nek.i)
- (tutorials/fhr_reflector/cht/nek.i)
- (test/tests/nek_standalone/conj_ht/nek.i)
- (tutorials/fhr_reflector/conduction/nek.i)
- (test/tests/conduction/identical_volume/cube/nek.i)
- (test/tests/cht/sfr_pincell/nek.i)
- (test/tests/cht/nondimensional/nek_exact.i)
- (tutorials/sfr_7pin/nek_vpp.i)
- (test/tests/conduction/identical_interface/pyramid/nek.i)
- (test/tests/cht/pebble/shift/nek.i)
- (tutorials/sfr_7pin/nek.i)
- (test/tests/conduction/boundary_and_volume/prism/nek.i)
- (test/tests/conduction/boundary_and_volume/prism/nek_exact.i)
- (test/tests/cht/sfr_pincell/nek_vpp.i)
- (test/tests/postprocessors/nek_heat_flux_integral/nek.i)
- (test/tests/cht/nondimensional/nek.i)
- (test/tests/cht/pebble/nek.i)