[gharek]

Hello everyone,

I am trying to use perturbU to run a precursor simulation for a channel flow, so that I get the required turbulence before I can use the results to initialise a main run.

I received the following error while compiling perturbU:

perturbU.C: In function ‘int main(int, char**)’:
perturbU.C:173:49: error: ‘class Foam::Random’ has no member named ‘GaussNormal’
scalar deviation=1.0 + 0.2*perturbation.GaussNormal();

I am using Openfoam 6.

Thanks,
Gary

[absrocks007]

Hi, I am also facing the same issue, my OpenFoam version 6.0 and while compiling perturbU, I am getting same error

error: ‘class Foam::Random’ has no member named ‘GaussNormal’; did you mean ‘scalarNormal’?
scalar deviation=1.0 + 0.2*perturbation.GaussNormal();

[FlameSlave]

For future users: I was able to solve this issue in OF7.0 by changing GaussNormal to scalarNormal in perturbUChannel/perturbU.C and perturbUGeneric/perturbU.C.


After trying to compile another error comes up indicating that headerOk is not a member etc in perturbUCylinder/perturbU.C. This can be fixed by borrowing from $FOAM_SRC/conversion/meshTables/boundaryRegion.C where IOMap<dictionary> ioObj is defined. Simply change the definition in the perturbU.C file from previously

IOobject Uheader
(
    "U",
    runTime.timeName(),
    mesh,
    IOobject::MUST_READ
);

To

IOMap<dictionary> ioObj
(
    IOobject Uheader
    (
        "U",
        runTime.timeName(),
        mesh,
        IOobject::MUST_READ
    )
);

and you should be good to go.


Maybe this could be updated in the git repository for more recent OF versions?

[Gerry Kan]

As the compiler error suggests, Foam::Random’ no longer has a member function ‘GaussNormal’ from OF 6 onwards. The new member 'scalarNormal' also returns a random scalar between 0 and 1. It is sufficient to substitute the offending member with this renamed member and not significantly alter the behavior of perturbU.

Gerry.