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calculating the viscous stress tensor tau for viscous dissipation heating

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Old   April 20, 2010, 14:58
Exclamation calculating the viscous stress tensor tau for viscous dissipation heating
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Dan Gadensgaard
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Hi all..

I have made a interTempFoam solver, based on the interFoam solver, in which i have included the temperature equation. However, as i am simulating a very viscous flow (Metal Injection Moulding - POM with metal powder) i would like to add the heat of dissapation to the temperature equation.

To do this i need the stress tensor tau, and i have tried to implement it as shown in the code below:

TEqn.H file:
Code:
   surfaceScalarField mu
    (
        "mu",
        twoPhaseProperties.mu()
    );

volTensorField gradU = fvc::grad(U);

volTensorField tau = mu * (gradU + gradU.T());



//Temperature equation (with viscous dissipation):
fvScalarMatrix TEqn
	(
		
		rho * cp * (fvm::ddt(T) + fvm::div(phi,T)) - fvm::laplacian(kT,T)+ tau && gradU
	);

TEqn.solve();
The equation is added to the solver just before the PISO-loop.

When i try to compile the solver it gives me a lot of errors, shown below:
Code:
In file included from interTempFoam.C:90:
TEqn.H: In function ‘int main(int, char**)’:
TEqn.H:10: fejl: no matching function for call to ‘Foam::GeometricField<double, Foam::fvsPatchField, Foam::surfaceMesh>::GeometricField(const char [3], Foam::tmp<Foam::GeometricField<double, Foam::fvPatchField, Foam::volMesh> >)’
/home/dang/OpenFOAM/OpenFOAM-1.6/src/OpenFOAM/lnInclude/GeometricField.C:607: bemærk: candidates are: Foam::GeometricField<Type, PatchField, GeoMesh>::GeometricField(const Foam::IOobject&, const Foam::GeometricField<Type, PatchField, GeoMesh>&, const Foam::wordList&) [with Type = double, PatchField = Foam::fvsPatchField, GeoMesh = Foam::surfaceMesh]
/home/dang/OpenFOAM/OpenFOAM-1.6/src/OpenFOAM/lnInclude/GeometricField.C:572: bemærk:                 Foam::GeometricField<Type, PatchField, GeoMesh>::GeometricField(const Foam::IOobject&, const Foam::GeometricField<Type, PatchField, GeoMesh>&, const Foam::word&) [with Type = double, PatchField = Foam::fvsPatchField, GeoMesh = Foam::surfaceMesh]
/home/dang/OpenFOAM/OpenFOAM-1.6/src/OpenFOAM/lnInclude/GeometricField.C:541: bemærk:                 Foam::GeometricField<Type, PatchField, GeoMesh>::GeometricField(const Foam::word&, const Foam::tmp<Foam::GeometricField<Type, PatchField, GeoMesh> >&) [with Type = double, PatchField = Foam::fvsPatchField, GeoMesh = Foam::surfaceMesh]
/home/dang/OpenFOAM/OpenFOAM-1.6/src/OpenFOAM/lnInclude/GeometricField.C:508: bemærk:                 Foam::GeometricField<Type, PatchField, GeoMesh>::GeometricField(const Foam::word&, const Foam::GeometricField<Type, PatchField, GeoMesh>&) [with Type = double, PatchField = Foam::fvsPatchField, GeoMesh = Foam::surfaceMesh]
/home/dang/OpenFOAM/OpenFOAM-1.6/src/OpenFOAM/lnInclude/GeometricField.C:476: bemærk:                 Foam::GeometricField<Type, PatchField, GeoMesh>::GeometricField(const Foam::IOobject&, const Foam::GeometricField<Type, PatchField, GeoMesh>&) [with Type = double, PatchField = Foam::fvsPatchField, GeoMesh = Foam::surfaceMesh]
/home/dang/OpenFOAM/OpenFOAM-1.6/src/OpenFOAM/lnInclude/GeometricField.C:444: bemærk:                 Foam::GeometricField<Type, PatchField, GeoMesh>::GeometricField(const Foam::tmp<Foam::GeometricField<Type, PatchField, GeoMesh> >&) [with Type = double, PatchField = Foam::fvsPatchField, GeoMesh = Foam::surfaceMesh]
/home/dang/OpenFOAM/OpenFOAM-1.6/src/OpenFOAM/lnInclude/GeometricField.C:412: bemærk:                 Foam::GeometricField<Type, PatchField, GeoMesh>::GeometricField(const Foam::GeometricField<Type, PatchField, GeoMesh>&) [with Type = double, PatchField = Foam::fvsPatchField, GeoMesh = Foam::surfaceMesh]
/home/dang/OpenFOAM/OpenFOAM-1.6/src/OpenFOAM/lnInclude/GeometricField.C:374: bemærk:                 Foam::GeometricField<Type, PatchField, GeoMesh>::GeometricField(const Foam::IOobject&, const typename GeoMesh::Mesh&, Foam::Istream&) [with Type = double, PatchField = Foam::fvsPatchField, GeoMesh = Foam::surfaceMesh]
/home/dang/OpenFOAM/OpenFOAM-1.6/src/OpenFOAM/lnInclude/GeometricField.C:333: bemærk:                 Foam::GeometricField<Type, PatchField, GeoMesh>::GeometricField(const Foam::IOobject&, const typename GeoMesh::Mesh&) [with Type = double, PatchField = Foam::fvsPatchField, GeoMesh = Foam::surfaceMesh]
/home/dang/OpenFOAM/OpenFOAM-1.6/src/OpenFOAM/lnInclude/GeometricField.C:309: bemærk:                 Foam::GeometricField<Type, PatchField, GeoMesh>::GeometricField(const Foam::IOobject&, const typename GeoMesh::Mesh&, const Foam::dimensionSet&, const Foam::Field<Type>&, const Foam::PtrList<PatchField<Type> >&) [with Type = double, PatchField = Foam::fvsPatchField, GeoMesh = Foam::surfaceMesh]
/home/dang/OpenFOAM/OpenFOAM-1.6/src/OpenFOAM/lnInclude/GeometricField.C:279: bemærk:                 Foam::GeometricField<Type, PatchField, GeoMesh>::GeometricField(const Foam::IOobject&, const typename GeoMesh::Mesh&, const Foam::dimensioned<Type>&, const Foam::wordList&) [with Type = double, PatchField = Foam::fvsPatchField, GeoMesh = Foam::surfaceMesh]
/home/dang/OpenFOAM/OpenFOAM-1.6/src/OpenFOAM/lnInclude/GeometricField.C:250: bemærk:                 Foam::GeometricField<Type, PatchField, GeoMesh>::GeometricField(const Foam::IOobject&, const typename GeoMesh::Mesh&, const Foam::dimensioned<Type>&, const Foam::word&) [with Type = double, PatchField = Foam::fvsPatchField, GeoMesh = Foam::surfaceMesh]
/home/dang/OpenFOAM/OpenFOAM-1.6/src/OpenFOAM/lnInclude/GeometricField.C:223: bemærk:                 Foam::GeometricField<Type, PatchField, GeoMesh>::GeometricField(const Foam::IOobject&, const typename GeoMesh::Mesh&, const Foam::dimensionSet&, const Foam::wordList&) [with Type = double, PatchField = Foam::fvsPatchField, GeoMesh = Foam::surfaceMesh]
/home/dang/OpenFOAM/OpenFOAM-1.6/src/OpenFOAM/lnInclude/GeometricField.C:193: bemærk:                 Foam::GeometricField<Type, PatchField, GeoMesh>::GeometricField(const Foam::IOobject&, const typename GeoMesh::Mesh&, const Foam::dimensionSet&, const Foam::word&) [with Type = double, PatchField = Foam::fvsPatchField, GeoMesh = Foam::surfaceMesh]
TEqn.H:14: fejl: no match for ‘operator*’ in ‘mu * Foam::operator+(const Foam::GeometricField<TypeR, PatchField, GeoMesh>&, const Foam::tmp<Foam::GeometricField<Type1, PatchField, GeoMesh> >&) [with Type1 = Foam::Tensor<double>, Type2 = Foam::Tensor<double>, PatchField = Foam::fvPatchField, GeoMesh = Foam::volMesh](((const Foam::tmp<Foam::GeometricField<Foam::Tensor<double>, Foam::fvPatchField, Foam::volMesh> >&)((const Foam::tmp<Foam::GeometricField<Foam::Tensor<double>, Foam::fvPatchField, Foam::volMesh> >*)(& Foam::GeometricField<Type, PatchField, GeoMesh>::T() const [with Type = Foam::Tensor<double>, PatchField = Foam::fvPatchField, GeoMesh = Foam::volMesh]()))))’
/home/dang/OpenFOAM/OpenFOAM-1.6/src/OpenFOAM/lnInclude/dimensionSet.H:266: bemærk: candidates are: Foam::dimensionSet Foam::operator*(const Foam::dimensionSet&, const Foam::dimensionSet&)
/home/dang/OpenFOAM/OpenFOAM-1.6/src/OpenFOAM/lnInclude/dimensionedScalar.H:56: bemærk:                 Foam::dimensionedScalar Foam::operator*(const Foam::dimensionedScalar&, Foam::scalar)
/home/dang/OpenFOAM/OpenFOAM-1.6/src/OpenFOAM/lnInclude/scalarField.H:81: bemærk:                 Foam::tmp<Foam::Field<double> > Foam::operator*(const Foam::UList<double>&, const Foam::UList<double>&)
/home/dang/OpenFOAM/OpenFOAM-1.6/src/OpenFOAM/lnInclude/scalarField.H:81: bemærk:                 Foam::tmp<Foam::Field<double> > Foam::operator*(const Foam::UList<double>&, const Foam::tmp<Foam::Field<double> >&)
/home/dang/OpenFOAM/OpenFOAM-1.6/src/OpenFOAM/lnInclude/scalarField.H:81: bemærk:                 Foam::tmp<Foam::Field<double> > Foam::operator*(const Foam::tmp<Foam::Field<double> >&, const Foam::UList<double>&)
/home/dang/OpenFOAM/OpenFOAM-1.6/src/OpenFOAM/lnInclude/scalarField.H:81: bemærk:                 Foam::tmp<Foam::Field<double> > Foam::operator*(const Foam::tmp<Foam::Field<double> >&, const Foam::tmp<Foam::Field<double> >&)
/home/dang/OpenFOAM/OpenFOAM-1.6/src/OpenFOAM/lnInclude/symmTensorField.H:71: bemærk:                 Foam::tmp<Foam::Field<Foam::Vector<double> > > Foam::operator*(const Foam::UList<Foam::SymmTensor<double> >&)
/home/dang/OpenFOAM/OpenFOAM-1.6/src/OpenFOAM/lnInclude/symmTensorField.H:71: bemærk:                 Foam::tmp<Foam::Field<Foam::Vector<double> > > Foam::operator*(const Foam::tmp<Foam::Field<Foam::SymmTensor<double> > >&)
/home/dang/OpenFOAM/OpenFOAM-1.6/src/OpenFOAM/lnInclude/tensorField.H:76: bemærk:                 Foam::tmp<Foam::Field<Foam::Vector<double> > > Foam::operator*(const Foam::UList<Foam::Tensor<double> >&)
/home/dang/OpenFOAM/OpenFOAM-1.6/src/OpenFOAM/lnInclude/tensorField.H:76: bemærk:                 Foam::tmp<Foam::Field<Foam::Vector<double> > > Foam::operator*(const Foam::tmp<Foam::Field<Foam::Tensor<double> > >&)
/home/dang/OpenFOAM/OpenFOAM-1.6/src/OpenFOAM/lnInclude/tensorField.H:77: bemærk:                 Foam::tmp<Foam::Field<Foam::Tensor<double> > > Foam::operator*(const Foam::UList<Foam::Vector<double> >&)
/home/dang/OpenFOAM/OpenFOAM-1.6/src/OpenFOAM/lnInclude/tensorField.H:77: bemærk:                 Foam::tmp<Foam::Field<Foam::Tensor<double> > > Foam::operator*(const Foam::tmp<Foam::Field<Foam::Vector<double> > >&)
/home/dang/OpenFOAM/OpenFOAM-1.6/src/OpenFOAM/lnInclude/dimensionedSymmTensor.H:69: bemærk:                 Foam::dimensionedVector Foam::operator*(const Foam::dimensionedSymmTensor&)
/home/dang/OpenFOAM/OpenFOAM-1.6/src/OpenFOAM/lnInclude/dimensionedTensor.H:75: bemærk:                 Foam::dimensionedVector Foam::operator*(const Foam::dimensionedTensor&)
/home/dang/OpenFOAM/OpenFOAM-1.6/src/OpenFOAM/lnInclude/dimensionedTensor.H:78: bemærk:                 Foam::dimensionedTensor Foam::operator*(const Foam::dimensionedVector&)
/home/dang/OpenFOAM/OpenFOAM-1.6/src/finiteVolume/lnInclude/readPISOControls.H:11: advarsel: unused variable ‘transonic’
/home/dang/OpenFOAM/OpenFOAM-1.6/src/finiteVolume/lnInclude/readPISOControls.H:14: advarsel: unused variable ‘nOuterCorr’
TEqn.H:14: advarsel: unused variable ‘tau’
/home/dang/OpenFOAM/OpenFOAM-1.6/src/finiteVolume/lnInclude/readPISOControls.H:3: advarsel: unused variable ‘nCorr’
/home/dang/OpenFOAM/OpenFOAM-1.6/src/finiteVolume/lnInclude/readPISOControls.H:8: advarsel: unused variable ‘momentumPredictor’
/home/dang/OpenFOAM/OpenFOAM-1.6/src/finiteVolume/lnInclude/readPISOControls.H:11: advarsel: unused variable ‘transonic’
/home/dang/OpenFOAM/OpenFOAM-1.6/src/finiteVolume/lnInclude/readPISOControls.H:14: advarsel: unused variable ‘nOuterCorr’
make: *** [Make/linux64GccDPOpt/interTempFoam.o] Fejl 1
Hope someone can tell me, og give me a hint as to what i am doing wrong?!

// Dan
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Old   April 20, 2010, 15:56
Default Found one error.
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Well, i have now found one of the bugs, but i still get an error as soon as i try to perform:

tau && gradU

what have i missed?

// Dan
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Old   April 20, 2010, 18:32
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Hi dgadensg,

try: rho * cp * (fvm::ddt(T) + fvm::div(phi,T)) - fvm::laplacian(kT,T)+ ( tau && gradU )

( parentheses around double inner product , C operator precedence )


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Old   April 21, 2010, 04:16
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Hi Bandfrosch

Well, that was a quick fix ;-), it works!

Thank you!

\\Dan
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Old   January 11, 2023, 06:20
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I actually try a similar thing, but I am not sure about the correct term to add. Here you just used (tau && gradU).


Where did you got this term from?
In the documentation of energy equation (https://doc.cfd.direct/openfoam/energy-equation/), I found the term div(tau * U). Using the definition from wikipedia (https://de.wikipedia.org/wiki/Formel...Cr_Divergenzen) that would give


div(tau * U) = div(tau^T) * U + tau^T : gradU
tau is symmetric, so the transpose does not matter, but there would be a another contribution. Is that term zero for any reason, that I do not see, or did i got a wrong idea from the documentation of energy equation?


Thanks for any reply,
K.C.
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Old   January 17, 2023, 16:20
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Hi K.C.


sorry for not being able to give you any advise, the problem of dgadensg ( the one who started the thread ) was a purely C++ syntactical one.


May be I find some time to think about it once more, please do not expect any reasonable answer soon.


Contacting dgadensg seems to be a better solution.


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