CFD Online Discussion Forums - How to read the phaseName: alpha.water from the code

Dear All,

Maybe it is a bit boring question but I just wondered that how the code read the alpha1 phaseName as alpha.water in the compressibleInterFoam solver?

When I looked at the code, I could not see anywhere alpha1 phaseName assigned as alpha.water.

First I looked at createFields where alpha1 is seen:

Code:

Info<< "Constructing twoPhaseMixtureThermo\n" << endl;

twoPhaseMixtureThermo mixture(mesh); 



volScalarField& alpha1(mixture.alpha1());

volScalarField& alpha2(mixture.alpha2());

then looked at twoPhaseMixtureThermo.H which in inherited twoPhaseMixute:

Code:

class twoPhaseMixtureThermo

:

    public psiThermo,

    public twoPhaseMixture

When I checked the twoPhaseMixture.H file:

Code:

class twoPhaseMixture

{

protected:



    // Protected data



        word phase1Name_;

        word phase2Name_;



        volScalarField alpha1_;

        volScalarField alpha2_;

Finally Phase names are defined in twoPhaseMixture.C file as follows:

Code:

 phase1Name_(wordList(dict.lookup("phases"))[0]),

    phase2Name_(wordList(dict.lookup("phases"))[1]),



    alpha1_

    (

        IOobject

        (

            IOobject::groupName("alpha", phase1Name_),

            mesh.time().timeName(),

            mesh,

            IOobject::MUST_READ,

            IOobject::AUTO_WRITE

        ),

        mesh

    ),



    alpha2_

    (

        IOobject

        (

            IOobject::groupName("alpha", phase2Name_),

            mesh.time().timeName(),

            mesh

        ),

        1.0 - alpha1_

    )

So, my question is how the alpha.water is assigned to name of alpha1?

I may overlook something. :(

Thank you