[xuegy]

Hello everyone,

I'm trying to move viscoelasticFluidFoam and its libraries from foam-extend-4.1 and compile it in official v1812. Foam-extend now has tons of compatibility issues and I need to use the official version for my second stage simulation so I have to port it.
After fixing so many syntax issues, I'm trapped by a weird error:
In /src/viscoelastic/viscoelasticLaws/multiMode/multiMode.C

Foam::multiMode::divTau(volVectorField& U) const
{
    tmp<fvVectorMatrix> divMatrix = models_[0].divTau(U);

    for (label i = 1; i < models_.size(); i++)
    {
        divMatrix() += models_[i].divTau(U);
    }

    return divMatrix;
}

The compiler gives the following error:

viscoelasticLaws/multiMode/multiMode.C: In member function ‘virtual Foam::tmp<Foam::fvMatrix<Foam::Vector<double> > > Foam::multiMode::divTau(Foam::volVectorField&) const’:
viscoelasticLaws/multiMode/multiMode.C:98:43: error: passing ‘const Foam::fvMatrix<Foam::Vector<double> >’ as ‘this’ argument discards qualifiers [-fpermissive]
         divMatrix() += models_[i].divTau(U);

I googled, and people say that the solution is adding a 'const' to the function. However, there's already a 'const'. I'm totally lost. How to fix this issue?

Thanks!

[xuegy]

I have successfully compiled the solver by removing multiMode model. However, I still want to fix this issue and maybe upload the revised compatible solver to GitHub.

[hdotyao]

hi,
I am also compiling viscoelasticFluidFoam to official OpenFOAM. And I am facing the same issue. I need this multiMode so I don't want to delete it. Have you solved it?


Best