The wallHeatFlux function object computes the wall-heat flux at selected wall patches.


Operand Type Location
input - -
output file dat $FOAM_CASE/postProcessing/<FO>/<time>/<field>
output field volScalarField (only boundaryField) $FOAM_CASE/<time>/<outField>


Example of the wallHeatFlux function object by using functions sub-dictionary in system/controlDict file:

    // Mandatory entries (unmodifiable)
    type            wallHeatFlux;
    libs            (fieldFunctionObjects);

    // Optional entries (runtime modifiable)
    patches     (<patch1> ... <patchN>); // (wall1 "(wall2|wall3)");
    qr          qr;

    // Optional (inherited) entries
    writePrecision  8;
    writeToFile     true;
    useUserTime     true;
    region          region0;
    enabled         true;
    log             true;
    timeStart       0;
    timeEnd         1000;
    executeControl  timeStep;
    executeInterval 1;
    writeControl    timeStep;
    writeInterval   1;

where the entries mean:

Property Description Type Required Default
type Type name: wallHeatFlux word yes -
libs Library name: fieldFunctionObjects word yes -
patches Names of operand patches wordList no all wall patches
qr Name of radiative heat flux field word no qr

The inherited entries are elaborated in:

Example by using the postProcess utility:

<solver> -postProcess -func wallHeatFlux

Stored properties

Reduced data

The following data are stored by the function object, and can be used by other function objects:

  • min(<patch-name>) : minimum patch value
  • max(<patch-name>) : maximum patch value
  • int(<patch-name>) : integral patch value

Further information


Source code: