GapHeatTransfer

Transfers heat across a gap between two surfaces dependant on the gap geometry specified.

Description

GapHeatTransfer calculates the amount of heat transferred across unmeshed gaps between two different blocks.

The quadrature option is generally recommended for most models. With this option, heat flux is computed and applied as an integrated boundary condition at the quadrature points on both faces. Use of the quadrature options generally gives smoother results, although there can be small differences in the heat flux on the two surfaces.

It is also important to use the appropriate gap_geometry_type parameter (PLATE, CYLINDER, or SPHERE) for the model geometry.

Example Input syntax


[ThermalContact]
  [./left_to_right]
    slave = leftright
    quadrature = true
    master = rightleft
    variable = temp
    type = GapHeatTransfer
  [../]
[]
(modules/heat_conduction/test/tests/heat_conduction/2d_quadrature_gap_heat_transfer/nonmatching.i)

Input Parameters

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

    C++ Type:NonlinearVariableName

    Options:

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

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

    C++ Type:std::vector

    Options:

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

Required Parameters

  • gap_tempTemperature on the other side of the gap

    C++ Type:std::vector

    Options:

    Description:Temperature on the other side of the gap

  • gap_geometry_typeGap calculation type. Choices are: PLATE CYLINDER SPHERE

    C++ Type:MooseEnum

    Options:PLATE CYLINDER SPHERE

    Description:Gap calculation type. Choices are: PLATE CYLINDER SPHERE

  • disp_zThe z displacement

    C++ Type:std::vector

    Options:

    Description:The z displacement

  • disp_yThe y displacement

    C++ Type:std::vector

    Options:

    Description:The y displacement

  • disp_xThe x displacement

    C++ Type:std::vector

    Options:

    Description:The x displacement

  • paired_boundaryThe boundary to be penetrated

    C++ Type:BoundaryName

    Options:

    Description:The boundary to be penetrated

  • warningsFalseWhether to output warning messages concerning nodes not being found

    Default:False

    C++ Type:bool

    Options:

    Description:Whether to output warning messages concerning nodes not being found

  • appended_property_nameName appended to material properties to make them unique

    C++ Type:std::string

    Options:

    Description:Name appended to material properties to make them unique

  • max_gap1e+06A maximum gap size

    Default:1e+06

    C++ Type:double

    Options:

    Description:A maximum gap size

  • quadratureFalseWhether or not to do Quadrature point based gap heat transfer. If this is true then gap_distance and gap_temp should NOT be provided (and will be ignored) however paired_boundary IS then required.

    Default:False

    C++ Type:bool

    Options:

    Description:Whether or not to do Quadrature point based gap heat transfer. If this is true then gap_distance and gap_temp should NOT be provided (and will be ignored) however paired_boundary IS then required.

  • min_gap1e-06A minimum gap size

    Default:1e-06

    C++ Type:double

    Options:

    Description:A minimum gap size

  • sphere_originOrigin for sphere geometry

    C++ Type:libMesh::VectorValue

    Options:

    Description:Origin for sphere geometry

  • gap_distanceDistance across the gap

    C++ Type:std::vector

    Options:

    Description:Distance across the gap

  • cylinder_axis_point_1Start point for line defining cylindrical axis

    C++ Type:libMesh::VectorValue

    Options:

    Description:Start point for line defining cylindrical axis

  • cylinder_axis_point_2End point for line defining cylindrical axis

    C++ Type:libMesh::VectorValue

    Options:

    Description:End point for line defining cylindrical axis

  • orderFIRSTThe finite element order

    Default:FIRST

    C++ Type:MooseEnum

    Options:CONSTANT FIRST SECOND THIRD FOURTH

    Description:The finite element order

  • displacementsThe displacements appropriate for the simulation geometry and coordinate system

    C++ Type:std::vector

    Options:

    Description:The displacements appropriate for the simulation geometry and coordinate system

Optional Parameters

  • enableTrueSet the enabled status of the MooseObject.

    Default:True

    C++ Type:bool

    Options:

    Description:Set the enabled status of the MooseObject.

  • save_inThe name of auxiliary variables to save this BC'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

    Options:

    Description:The name of auxiliary variables to save this BC'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

    Options:

    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

    Options:

    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

    Options:

    Description:The seed for the master random number generator

  • diag_save_inThe name of auxiliary variables to save this BC'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

    Options:

    Description:The name of auxiliary variables to save this BC'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

    Options:

    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

    Options:nontime time

    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

    Options:

    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

    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

    Options:

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

Tagging Parameters

Input Files