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0 wallHeatFlux on External Patch

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Old   January 7, 2023, 13:30
Default 0 wallHeatFlux on External Patch
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Amber Greer
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I am using OpenFOAM-10 with chtMultiRegionFoam on a heat transfer problem with only solids.

The geometry of the model is given below:


I use fixed boundary conditions where T = 373 [K] on the outside edges of the model. This gives the result provided in the figure in the image below:


However, when I try to extract the heat flux at the outside edges of the model in the "system/controlDict" file using:
        type wallHeatFlux;
        libs ("");
        region Cool;
        executeControl writeTime;
        executeInterval 1;
        writeControl writeTime;
        writeInterval 1;
In "4e+10/Cool/wallHeatFlux", I simply get
        type            calculated;
        value           uniform 0;
This is only the output for the patch on the outside edges of the model that I have labeled "Sides".

Does anyone know why this is the case? The heat flux is calculated properly on all internal surfaces and reported in "4e+10/Cool/wallHeatFlux" but is not of interest.

Last edited by amber25; January 7, 2023 at 13:31. Reason: compatible with image display format
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external, functions, patch, wallheatflux

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