The turbulentTemperatureCoupledBaffleMixed 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 condition specifies gradient and temperature such that the equations are the same on both sides: - refGradient = zero gradient - refValue = neighbour value - mixFraction = nbrKDelta / (nbrKDelta + myKDelta())

where KDelta is heat-transfer coefficient K * deltaCoeffs.

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::turbulentTemperatureCoupledBaffleMixed;
    Tnbr            <word>;

    // Optional entries
    thicknessLayer  <PatchFunction1<scalar>>;
    kappaLayer      <PatchFunction1<scalar>>;
    thicknessLayers <scalarField>;

    // Conditional entries

        // if 'thicknessLayers' entry is set
        kappaLayers  <scalarField>;

    // Inherited entries


Property Description Type Required Default
type Type name: turbulentTemperatureCoupledBaffleMixed 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 -

The inherited entries are elaborated in:

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

Further information


  • N/A

Source code:



  • Introduced in version v2206