The turbulentTemperatureRadCoupledMixed is a boundary condition that provides a mixed boundary condition for temperature, to be used for heat-transfer on back-to-back baffles. Optional thin thermal layer resistances can be specified through thicknessLayers and kappaLayers entries.

The thermal conductivity kappa can either be retrieved from various possible sources, as detailed in the class temperatureCoupledBase.


The condition requires entries in both the boundary and field files.

Boundary file

    type            patch;

Field file

    // Mandatory entries
    type            compressible::turbulentTemperatureRadCoupledMixed;
    Tnbr            <word>;

    // Optional entries
    Tnbr                <word>;
    qrNbr               <word>;
    qr                  <word>;
    logInterval         <scalar>;
    thermalInertia      <bool>;
    verbose             <bool>;
    prefix              <word>;

    // Conditional entries

        // Option-1
        thicknessLayers <scalarList>;
        kappaLayers     <scalarList>;

        // Option-2
        thicknessLayer  <PatchFunction1<scalar>>;
        kappaLayer      <PatchFunction1<scalar>>;

    // Inherited entries
    kappaMethod         <word>;
    kappa               <word>;


Property Description Type Required Default
type Type name: turbulentTemperatureRadCoupledMixed word yes -
Tnbr Name of field on the neighbour region word yes -
thicknessLayer Thickness of a single layer scalarList no -
thicknessLayers Thickness of multiple layers PatchFunction1<scalar> no -
kappaLayer Conductivity of a single layer scalarList no -
kappaLayers Conductivity of multiple layers PatchFunction1<scalar> no -
Tnbr Name of the nbr temperature field word no T
qrNbr Name of the radiative flux in the nbr region word no none
qr Name of the radiative flux in this region word no none
logInterval Log-file output frequency [s] scalar no -1
thermalInertia Flag to add thermal inertia to wall node bool no false
verbose Flag to enable verbose output with extra fields bool no false
prefix Name of output-field prefix (in verbose mode) word no multiWorld

The inherited entries are elaborated in:

  • mappedPatchFieldBase.H
  • mixedFvPatchFields.H
  • temperatureCoupledBase.H
  • writeFile.H

Further information


Source code:



  • Introduced in version v2206