[Nico A.]

Hello forum users,

I just wanted to use the new FunctionObjects in OF2.2.0. For calculating a gradient field during the simulation, there is the new calcFvcGrad post-Processing FunctionObject. I added it to my controlDict and started the simulation, but I got the following error:
Starting time loop

--> FOAM FATAL ERROR:
Unknown function type calcFvcGrad

Valid functions are :

18
(
cellSource
faceSource
fieldAverage
fieldCoordinateSystemTransform
fieldMinMax
fieldValueDelta
nearWallFields
patchProbes
probes
processorField
readFields
regionSizeDistribution
sets
streamLine
surfaceInterpolateFields
surfaces
turbulenceFields
wallBoundedStreamLine
)



    From function functionObject::New(const word& name, const Time&, const dictionary&)
    in file db/functionObjects/functionObject/functionObject.C at line 92.

FOAM exiting

So, does anyone have the solution to run that function? Did I may forgot to load a special lib?

I appreciate any response.

Best regards, Nico

[Nico A.]

Okay, I think this function is not compiled by default. So I added the string: "wmake $makeType fvTools" to the Allwmake file in the
$WM_PROJECT_DIR/src/postProcessing/functionObjects directory and I ran it once again.
Unfortunately an error occured:

wmakeLnInclude: linking include files to ./lnInclude
Making dependency list for source file calcFvcDiv/calcFvcDiv.C
Making dependency list for source file calcFvcDiv/calcFvcDivFunctionObject.C
Making dependency list for source file calcFvcGrad/calcFvcGrad.C
Making dependency list for source file calcFvcGrad/calcFvcGradFunctionObject.C
Making dependency list for source file calcMag/calcMag.C
Making dependency list for source file calcMag/calcMagFunctionObject.C
SOURCE=calcFvcDiv/calcFvcDiv.C ;  g++ -m64 -Dlinux64 -DWM_DP -Wall -Wextra -Wno-unused-parameter -Wold-style-cast -Wnon-virtual-dtor -O3  -DNoRepository -ftemplate-depth-100 -I/usrfem/femsys_local/OpenFOAM/OpenFOAM-2.2.0/src/finiteVolume/lnInclude -IlnInclude -I. -I/usrfem/femsys_local/OpenFOAM/OpenFOAM-2.2.0/src/OpenFOAM/lnInclude -I/usrfem/femsys_local/OpenFOAM/OpenFOAM-2.2.0/src/OSspecific/POSIX/lnInclude   -fPIC -c $SOURCE -o Make/linux64GccDPOpt/calcFvcDiv.o
In file included from calcFvcDiv/calcFvcDiv.C:26:
calcFvcDiv/calcFvcDiv.H:158: error: ISO C++ forbids declaration of 'polyMesh' with no type
calcFvcDiv/calcFvcDiv.H:158: error: expected ',' or '...' before '&' token
make: *** [Make/linux64GccDPOpt/calcFvcDiv.o] Error 1

So finally that is the newer problem and I do not see why? Are there any suggestions for that?

Thanks in advance.

Best Regards, Nico

[wyldckat]

Greetings Nico,

All does seem to indicate that the "fvTools" folder wasn't ready for production in OpenFOAM 2.2.0. You can fix this by running the following commands:

cd "$FOAM_SRC/postProcessing/functionObjects/fvTools"

wget "https://raw.github.com/OpenFOAM/OpenFOAM-2.2.x/master/src/postProcessing/functionObjects/fvTools/calcFvcDiv/calcFvcDiv.H" -O calcFvcDiv/calcFvcDiv.H

wget "https://raw.github.com/OpenFOAM/OpenFOAM-2.2.x/master/src/postProcessing/functionObjects/fvTools/calcFvcGrad/calcFvcGrad.H"  -O calcFvcGrad/calcFvcGrad.H

wget "https://raw.github.com/OpenFOAM/OpenFOAM-2.2.x/master/src/postProcessing/functionObjects/fvTools/calcMag/calcMag.H"  -O calcMag/calcMag.H

wclean libso
wmake libso

Here's an example for appending/adding to "system/controDict":

libs            ("libFVFunctionObjects.so"); //this force-loads the library

functions
{
    myCalc_calcFvcGrad
    {
        type            calcFvcGrad;
        libs            ("libFVFunctionObjects.so");
        fieldName       "U";
        resultName      "Ug";
    }
}

Best regards,
Bruno

[Nico A.]

Hello Bruno,

thanks for your help. So there was just the class declaration for ployMesh missing, I did not recognize that. Now the tool is running, thanks again.

Best regards, Nico