FVFunctorConvectiveHeatFluxBC

Convective heat transfer boundary condition with temperature and heat transfer coefficient given by functors.

Description

This boundary condition computes convective heat flux , where is the convective heat transfer coefficient, is the temperature, and is the far-field temperature. Both and are functors, which enables various spatial, variable and other dependences. The domain of the variable can be specified as either a fluid or a solid using the is_solid parameter. For a solid domain, the equation above is applied. For a fluid domain, the negative of the heat flux is applied. This allows for easier implementation of a double Robin boundary condition.

Similar objects: - CoupledConvectiveHeatFluxBC for a similar boundary condition coupled to variables, for finite elements - FunctorThermalResistanceBC for a combined conduction, convection, and radiative boundary condition, with a constant outside ambient temperature

Example syntax

In this example, the FVFunctorConvectiveHeatFluxBC boundary condition forms a convective boundary condition between the fluid and the solid.

[Mesh<<<{"href": "../../syntax/Mesh/index.html"}>>>]
  [gen]
    type = GeneratedMeshGenerator<<<{"description": "Create a line, square, or cube mesh with uniformly spaced or biased elements.", "href": "../meshgenerators/GeneratedMeshGenerator.html"}>>>
    dim<<<{"description": "The dimension of the mesh to be generated"}>>> = 2
    nx<<<{"description": "Number of elements in the X direction"}>>> = 6
    ny<<<{"description": "Number of elements in the Y direction"}>>> = 5
    xmax<<<{"description": "Upper X Coordinate of the generated mesh"}>>> = 2
    subdomain_ids<<<{"description": "Subdomain IDs for each element, default to all zero. If a single number is specified, that subdomain id is used for all element."}>>> = '0 0 0 1 1 1
                     0 0 0 1 1 1
                     0 0 0 1 1 1
                     0 0 0 1 1 1
                     0 0 0 1 1 1'
  []
  [interface]
    type = SideSetsBetweenSubdomainsGenerator<<<{"description": "MeshGenerator that creates a sideset composed of the nodes located between two or more subdomains.", "href": "../meshgenerators/SideSetsBetweenSubdomainsGenerator.html"}>>>
    input<<<{"description": "The mesh we want to modify"}>>> = gen
    primary_block<<<{"description": "The primary set of blocks for which to draw a sideset between"}>>> = 0
    paired_block<<<{"description": "The paired set of blocks for which to draw a sideset between"}>>> = 1
    new_boundary<<<{"description": "The list of boundary names to create on the supplied subdomain"}>>> = interface
  []
[]

[FVBCs<<<{"href": "../../syntax/FVBCs/index.html"}>>>]
  [interface_fluid_to_solid]
    type = FVFunctorConvectiveHeatFluxBC<<<{"description": "Convective heat transfer boundary condition with temperature and heat transfer coefficient given by functors.", "href": "FVFunctorConvectiveHeatFluxBC.html"}>>>
    boundary<<<{"description": "The list of boundary IDs from the mesh where this object applies"}>>> = 'interface'
    variable<<<{"description": "The name of the variable that this boundary condition applies to"}>>> = T_solid
    T_bulk<<<{"description": "Functor for far-field temperature. A functor is any of the following: a variable, a functor material property, a function, a post-processor, or a number."}>>> = T_fluid
    T_solid<<<{"description": "Functor for wall temperature. A functor is any of the following: a variable, a functor material property, a function, a post-processor, or a number."}>>> = T_solid
    is_solid<<<{"description": "Whether this kernel acts on the solid temperature"}>>> = true
    heat_transfer_coefficient<<<{"description": "Functor for heat transfer coefficient. A functor is any of the following: a variable, a functor material property, a function, a post-processor, or a number."}>>> = 'htc'
  []
  [left]
    type = FVDirichletBC<<<{"description": "Defines a Dirichlet boundary condition for finite volume method.", "href": "FVDirichletBC.html"}>>>
    boundary<<<{"description": "The list of boundary IDs from the mesh where this object applies"}>>> = 'left'
    variable<<<{"description": "The name of the variable that this boundary condition applies to"}>>> = T_solid
    value<<<{"description": "value to enforce at the boundary face"}>>> = 1
  []

  [interface_solid_to_fluid]
    type = FVFunctorConvectiveHeatFluxBC<<<{"description": "Convective heat transfer boundary condition with temperature and heat transfer coefficient given by functors.", "href": "FVFunctorConvectiveHeatFluxBC.html"}>>>
    boundary<<<{"description": "The list of boundary IDs from the mesh where this object applies"}>>> = 'interface'
    variable<<<{"description": "The name of the variable that this boundary condition applies to"}>>> = T_fluid
    T_bulk<<<{"description": "Functor for far-field temperature. A functor is any of the following: a variable, a functor material property, a function, a post-processor, or a number."}>>> = T_fluid
    T_solid<<<{"description": "Functor for wall temperature. A functor is any of the following: a variable, a functor material property, a function, a post-processor, or a number."}>>> = T_solid
    is_solid<<<{"description": "Whether this kernel acts on the solid temperature"}>>> = false
    heat_transfer_coefficient<<<{"description": "Functor for heat transfer coefficient. A functor is any of the following: a variable, a functor material property, a function, a post-processor, or a number."}>>> = 'htc'
  []
  [right]
    type = FVDirichletBC<<<{"description": "Defines a Dirichlet boundary condition for finite volume method.", "href": "FVDirichletBC.html"}>>>
    boundary<<<{"description": "The list of boundary IDs from the mesh where this object applies"}>>> = 'right'
    variable<<<{"description": "The name of the variable that this boundary condition applies to"}>>> = T_fluid
    value<<<{"description": "value to enforce at the boundary face"}>>> = 0
  []
[]
(moose/modules/heat_transfer/test/tests/fvbcs/fv_functor_convective_heat_flux/fv_functor_convective_heat_flux.i)

Input Parameters

  • T_bulkFunctor for far-field temperature. 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 far-field temperature. A functor is any of the following: a variable, a functor material property, a function, a post-processor, or a number.

  • T_solidFunctor for wall temperature. 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 wall temperature. A functor is any of the following: a variable, a functor material property, a function, a post-processor, or a number.

  • boundaryThe list of boundary IDs from the mesh where this object applies

    C++ Type:std::vector<BoundaryName>

    Controllable:No

    Description:The list of boundary IDs from the mesh where this object applies

  • heat_transfer_coefficientFunctor for heat transfer coefficient. 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 heat transfer coefficient. A functor is any of the following: a variable, a functor material property, a function, a post-processor, or a number.

  • is_solidFalseWhether this kernel acts on the solid temperature

    Default:False

    C++ Type:bool

    Controllable:No

    Description:Whether this kernel acts on the solid temperature

  • variableThe name of the variable that this boundary condition applies to

    C++ Type:NonlinearVariableName

    Unit:(no unit assumed)

    Controllable:No

    Description:The name of the variable that this boundary condition applies to

Required Parameters

  • displacementsThe displacements

    C++ Type:std::vector<VariableName>

    Unit:(no unit assumed)

    Controllable:No

    Description:The displacements

Optional Parameters

  • absolute_value_vector_tagsThe tags for the vectors this residual object should fill with the absolute value of the residual contribution

    C++ Type:std::vector<TagName>

    Controllable:No

    Description:The tags for the vectors this residual object should fill with the absolute value of the residual contribution

  • extra_matrix_tagsThe extra tags for the matrices this Kernel should fill

    C++ Type:std::vector<TagName>

    Controllable:No

    Description:The extra tags for the matrices this Kernel should fill

  • extra_vector_tagsThe extra tags for the vectors this Kernel should fill

    C++ Type:std::vector<TagName>

    Controllable:No

    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

    Options:nontime, system

    Controllable:No

    Description:The tag for the matrices this Kernel should fill

  • vector_tagsnontimeThe tag for the vectors this Kernel should fill

    Default:nontime

    C++ Type:MultiMooseEnum

    Options:nontime, time

    Controllable:No

    Description:The tag for the vectors this Kernel should fill

Contribution To Tagged Field Data Parameters

  • control_tagsAdds user-defined labels for accessing object parameters via control logic.

    C++ Type:std::vector<std::string>

    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

    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

    Controllable:No

    Description:Determines whether this object is calculated using an implicit or explicit form

  • 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

    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

  • 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

    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.

Material Property Retrieval Parameters