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Description

The fixedIncidentRadiation is a boundary condition for thermal coupling for solid regions. It is used to emulate a fixed incident radiative heat flux on a wall.

The gradient heat flux is calculated as:

\[q_r = \epsilon*(q_{r, incident} - \sigma_ T^4)\]

where:

Property Description
\(\epsilon\) Emissivity of the solid
\(q_{r, incident}\) Specified fixed incident radiation
\(T\) Temperature

Usage

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

Boundary file 

<patchName>
{
    type            patch;
    ...
}

Field file 

<patchName>
{
    // Mandatory entries
    type            fixedIncidentRadiation;
    qrIncident      <scalarField>;

    // Inherited entries
    ...
}

where:

Property Description Type Required Default
type Type name: fixedIncidentRadiation word yes -
qrIncident Incident radiative heat flux scalarField yes -

The inherited entries are elaborated in:

  • fixedGradientFvPatchField.H
  • temperatureCoupledBase.H

Further information

Tutorial:

Source code:

API:

History:

  • Introduced in version 2206