turbulentTemperatureCoupledBaffleMixed

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:

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

Tutorial:

• N/A

Source code:

• turbulentTemperatureCoupledBaffleMixed

API:

• Foam::compressible::turbulentTemperatureCoupledBaffleMixedFvPatchScalarField

History: Introduced in version v2206