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Description

The compressible::fixedMultiPhaseHeatFlux is a boundary condition that calculates a wall temperature that produces the specified overall wall heat flux across all the phases in an Eulerian multi-phase simulation.

Intended to be used with the copiedFixedValue condition to ensure that phase wall temperature are consistent:

  • Set fixedMultiPhaseHeatFlux boundary for one of the phases
  • Use copiedFixedValue for all the other phases.

Usage

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

Boundary file 

<patchName>
{
    type            patch;
    ...
}

Field file 

<patchName>
{
    // Mandatory entries
    type            fixedMultiPhaseHeatFlux;
    q               <scalarField>;

    // Optional entries
    relax           <scalar>;
    Tmin            <scalar>;

    // Inherited entries
    ...
}

where:

Property Description Type Required Default
type Type name: fixedMultiPhaseHeatFlux word yes -
q Heat power [W] or flux [W/m^2] scalarField yes -
relax Relaxation factor scalar no 1.0
Tmin Minimum temperature limit [K] scalar no 273.0

The inherited entries are elaborated in:

  • fixedValueFvPatchField.H

Further information

Tutorial:

Source code:

API:

History:

  • Introduced in version v2012