Description🔗

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.

Usage🔗

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

Boundary file🔗

<patchName>
{
    type            patch;
    ...
}

Field file🔗

<patchName>
{
    // 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
    ...
}

where:

The inherited entries are elaborated in:

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

Further information🔗

Tutorial:

• N/A

Source code:

• $FOAM_SRC/thermoTools/derivedFvPatchFields/turbulentTemperatureCoupledBaffleMixed

API:

• Foam::compressible::turbulentTemperatureCoupledBaffleMixedFvPatchScalarField

History:

• Introduced in version v2206