[nicola_andreini]

Good morning,

I am doing simulations using compressibleInterFoam, how can I write in simulation foalders the mDotAlphal() field associated with condensation and evaporation ?

I am using the SchnerrSauer model.

Foam::Pair<Foam::tmp<Foam::volScalarField>>
Foam::twoPhaseChangeModels::SchnerrSauer::mDotAlphal() const
{
const volScalarField& p =
mixture_.U().db().lookupObject<volScalarField>("p" );

const volScalarField pCoeff(this->pCoeff(p));

const volScalarField limitedAlpha1
(
min(max(mixture_.alpha1(), scalar(0)), scalar(1))
);

return Pair<tmp<volScalarField>>
(
Cc_*limitedAlpha1*pCoeff*max(p - pSat(), p0_),

Cv_*(1.0 + alphaNuc() - limitedAlpha1)*pCoeff*min(p - pSat(), p0_)
);
}

[Yann]

Hello Nicola,

I don't know if it will work on your specific case, but have a look to the writeObjects function object. It allows to write variables which are registered to the database but not written to disk by default.

• OpenFOAM Foundation branch: https://github.com/OpenFOAM/OpenFOAM...writeObjects.H
• OpenCFD branch: https://develop.openfoam.com/Develop...ref_type=heads

Regards,
Yann

[nicola_andreini]

Originally Posted by Yann

Hello Nicola,

I don't know if it will work on your specific case, but have a look to the writeObjects function object. It allows to write variables which are registered to the database but not written to disk by default.

• OpenFOAM Foundation branch: https://github.com/OpenFOAM/OpenFOAM...writeObjects.H
• OpenCFD branch: https://develop.openfoam.com/Develop...ref_type=heads

Regards,
Yann

Thank you very much, unfortunately I have tried but it is not possible to use writeObject for that type of objects.

[Lorenzo210]

Hi Nicola,

A simple way to do it could be creating a variable in createFileds.H and the assign the value of mixture->mDotAlphal(); somewhere after mixture->correct;


Beware that mDotAlphal() is a Pair, so you may use two different volScalarField objects to write each component on.


You can set the IOobject options to NO_READ and AUTO_WRITE, so the variable will be written in each folder and you won't need to set a value in the 0 folder.


Regards,
Lorenzo