- fin_heightFin height functor [m]. A functor is any of the following: a variable, a functor material property, a function, a post-processor, or a number.
C++ Type:MooseFunctorName
Unit:(no unit assumed)
Controllable:No
Description:Fin height functor [m]. A functor is any of the following: a variable, a functor material property, a function, a post-processor, or a number.
- fin_perimeter_area_ratioFunctor for the ratio of the fin perimeter to its cross-sectional area [1/m]. A functor is any of the following: a variable, a functor material property, a function, a post-processor, or a number.
C++ Type:MooseFunctorName
Unit:(no unit assumed)
Controllable:No
Description:Functor for the ratio of the fin perimeter to its cross-sectional area [1/m]. A functor is any of the following: a variable, a functor material property, a function, a post-processor, or a number.
- heat_transfer_coefficientHeat transfer coefficient functor [W/(m^2-K)]. A functor is any of the following: a variable, a functor material property, a function, a post-processor, or a number.
C++ Type:MooseFunctorName
Unit:(no unit assumed)
Controllable:No
Description:Heat transfer coefficient functor [W/(m^2-K)]. A functor is any of the following: a variable, a functor material property, a function, a post-processor, or a number.
- thermal_conductivityThermal conductivity functor [W/(m-K)]. A functor is any of the following: a variable, a functor material property, a function, a post-processor, or a number.
C++ Type:MooseFunctorName
Unit:(no unit assumed)
Controllable:No
Description:Thermal conductivity functor [W/(m-K)]. A functor is any of the following: a variable, a functor material property, a function, a post-processor, or a number.
FinEfficiencyFunctorMaterial
This functor material computes a fin efficiency, which can be used with FinEnhancementFactorFunctorMaterial, for example.
Formulation
Under the following assumptions:
straight fin,
uniform cross section, and
adiabatic tip,
the fin efficiency is the following (Incropera et al., 2002):
where
is the heat transfer coefficient,
is the thermal conductivity of the fin,
is the fin height, i.e., the distance the fin extends above the surface,
is the fin perimeter, and
is the fin cross-sectional area.
Note that the fin perimeter and cross-sectional area are not needed separately; only the ratio is needed. For example, for a rectangular fin with width and thickness and a cylindrical pin fin with diameter :
| Fin type | |||
|---|---|---|---|
| Rectangular | |||
| Cylindrical pin |
Usage
This functor material creates a functor material property for the fin efficiency with the name given by the parameter "fin_efficiency_name".
The quantities , , , and are provided by the functor parameters "heat_transfer_coefficient", "thermal_conductivity", "fin_height", and "fin_perimeter_area_ratio", respectively.
Input Parameters
- blockThe list of blocks (ids or names) that this object will be applied
C++ Type:std::vector<SubdomainName>
Unit:(no unit assumed)
Controllable:No
Description:The list of blocks (ids or names) that this object will be applied
- boundaryThe list of boundaries (ids or names) from the mesh where this object applies
C++ Type:std::vector<BoundaryName>
Unit:(no unit assumed)
Controllable:No
Description:The list of boundaries (ids or names) from the mesh where this object applies
- constant_onNONEWhen ELEMENT, MOOSE will only call computeQpProperties() for the 0th quadrature point, and then copy that value to the other qps.When SUBDOMAIN, MOOSE will only call computeQpProperties() for the 0th quadrature point, and then copy that value to the other qps. Evaluations on element qps will be skipped
Default:NONE
C++ Type:MooseEnum
Unit:(no unit assumed)
Controllable:No
Description:When ELEMENT, MOOSE will only call computeQpProperties() for the 0th quadrature point, and then copy that value to the other qps.When SUBDOMAIN, MOOSE will only call computeQpProperties() for the 0th quadrature point, and then copy that value to the other qps. Evaluations on element qps will be skipped
- declare_suffixAn optional suffix parameter that can be appended to any declared 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 declared properties. The suffix will be prepended with a '_' character.
- execute_onALWAYSThe 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:ALWAYS
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.
- fin_efficiency_namefin_efficiencyName to give the fin efficiency functor material property. A functor is any of the following: a variable, a functor material property, a function, a post-processor, or a number.
Default:fin_efficiency
C++ Type:MooseFunctorName
Unit:(no unit assumed)
Controllable:No
Description:Name to give the fin efficiency functor material property. A functor is any of the following: a variable, a functor material property, a function, a post-processor, or a number.
- 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
- 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.
- implicitTrueDetermines whether this object is calculated using an implicit or explicit form
Default:True
C++ Type:bool
Unit:(no unit assumed)
Controllable:No
Description:Determines whether this object is calculated using an implicit or explicit form
- seed0The seed for the master random number generator
Default:0
C++ Type:unsigned int
Unit:(no unit assumed)
Controllable:No
Description:The seed for the master random number generator
Advanced Parameters
- output_propertiesList of material properties, from this material, to output (outputs must also be defined to an output type)
C++ Type:std::vector<std::string>
Unit:(no unit assumed)
Controllable:No
Description:List of material properties, from this material, to output (outputs must also be defined to an output type)
- outputsnone Vector of output names where you would like to restrict the output of variables(s) associated with this object
Default:none
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
Outputs Parameters
References
- Frank P. Incropera, David P. DeWitt, Theodore L. Bergman, Adrienne S. Lavine, and others.
Fundamentals of Heat and Mass Transfer.
Wiley New York, sixth edition, 2002.[BibTeX]