LinearFVDirichletCHTBC

Description

This object is a boundary condition used in the Navier-Stokes module that can be used for conjugate heat transfer (CHT) problems. Its role is to enforce a fixed Dirichlet value at an interface where heat is exchanged between solid and fluid regions. In practice, it is a wrapper around LinearFVAdvectionDiffusionFunctorDirichletBC with additional content allowing error checking in CHT applications. For more information on the design of CHT, see the CHT capability page. The inherited functor Dirichlet implementation automatically determines the appropriate interface side from the supplied functor during evaluation.

[LinearFVBCs<<<{"href": "../../syntax/LinearFVBCs/index.html"}>>>]
  [fluid_solid]
    type = LinearFVDirichletCHTBC<<<{"description": "Conjugate heat transfer BC for Dirichlet boundary condition-based coupling.", "href": "LinearFVDirichletCHTBC.html"}>>>
    variable<<<{"description": "The name of the variable that this boundary condition applies to"}>>> = T_fluid
    boundary<<<{"description": "The list of boundary IDs from the mesh where this object applies"}>>> = interface
    functor<<<{"description": "The functor for this boundary condition. A functor is any of the following: a variable, a functor material property, a function, a postprocessor or a number."}>>> = interface_temperature_solid_interface
  []

  [solid_fluid]
    type = LinearFVRobinCHTBC<<<{"description": "Conjugate heat transfer BC for Robin boundary condition-based coupling.", "href": "LinearFVRobinCHTBC.html"}>>>
    variable<<<{"description": "The name of the variable that this boundary condition applies to"}>>> = T_solid
    boundary<<<{"description": "The list of boundary IDs from the mesh where this object applies"}>>> = interface
    h<<<{"description": "The convective heat transfer coefficient. A functor is any of the following: a variable, a functor material property, a function, a postprocessor or a number."}>>> = ${h_s}
    thermal_conductivity<<<{"description": "The thermal conductivity of the material. Only used to compute the pure normal gradient of the variable on the boundary. A functor is any of the following: a variable, a functor material property, a function, a postprocessor or a number."}>>> = ${k_s}
    incoming_flux<<<{"description": "The incoming diffusive flux on the interface. A functor is any of the following: a variable, a functor material property, a function, a postprocessor or a number."}>>> = heat_flux_to_solid_interface
    surface_temperature<<<{"description": "The prescribed temperature on the interface. A functor is any of the following: a variable, a functor material property, a function, a postprocessor or a number."}>>> = interface_temperature_fluid_interface
  []
[]

Input Parameters

Input Files

• (modules/navier_stokes/test/tests/finite_volume/ins/radiation_participating_media/p1_radiation_cht_SIMPLE.i)
• (modules/navier_stokes/test/tests/finite_volume/ins/cht/conjugate_heat_transfer/cht_neu-dir.i)