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Writing a wallGradT

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Old   November 19, 2010, 09:38
Default Writing a wallGradT
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Hello fellow openfoam-users,

I'm trying to modify wallGradU to write the sn-gradient of scalar T at the wall calculated by scalarTransportFoam.

It seems to be very straightforward, it compiles and runs but I want to make sure the results are correct.
Here is what I did:

Im creating an IOObject,
and an object wallGradT:
Code:
            volScalarField wallGradT
            (
                IOobject
                (
                    "wallGradT",
                    runTime.timeName(),
                    mesh,
                    IOobject::NO_READ,
                    IOobject::AUTO_WRITE
                ),
                mesh,
                dimensionedScalar
                (
                    "wallGradT",
                    T.dimensions()/dimLength,
                    0
                )
            );
and calculating the surface-normal gradient just as in wallGradU:
Code:
wallGradT.boundaryField()[patchi] = -T.boundaryField()[patchi].snGrad();
Is this the right way?
I want to make sure I'm getting correct results..

Thanks in advance!
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Old   November 20, 2010, 10:47
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David Boger
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That looks believable. You can find almost the same logic in applications/utilities/postProcessing/wall/wallGradU/wallGradU.C
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