foam-extend4.1-coherent-io/applications/solvers/multiphase/multiphaseInterFoam/createFields.H

    Info<< "Reading field pd\n" << endl;
    volScalarField pd
    (
        IOobject
        (
            "pd",
            runTime.timeName(),
            mesh,
            IOobject::MUST_READ,
            IOobject::AUTO_WRITE
        ),
        mesh
    );

    Info<< "Reading field U\n" << endl;
    volVectorField U
    (
        IOobject
        (
            "U",
            runTime.timeName(),
            mesh,
            IOobject::MUST_READ,
            IOobject::AUTO_WRITE
        ),
        mesh
    );

#   include "createPhi.H"

    multiphaseMixture mixture(U, phi);

    // Need to store rho for ddt(rho, U)
    volScalarField rho
    (
        IOobject
        (
            "rho",
            runTime.timeName(),
            mesh,
            IOobject::READ_IF_PRESENT
        ),
        mixture.rho()
    );
    rho.oldTime();


    Info<< "Calculating field g.h\n" << endl;
    volScalarField gh("gh", g & mesh.C());
    surfaceScalarField ghf("gh", g & mesh.Cf());

    volScalarField p
    (
        IOobject
        (
            "p",
            runTime.timeName(),
            mesh,
            IOobject::NO_READ,
            IOobject::AUTO_WRITE
        ),
        pd + rho*gh
    );


    label pdRefCell = 0;
    scalar pdRefValue = 0.0;
    setRefCell(pd, pimple.dict(), pdRefCell, pdRefValue);
    mesh.schemesDict().setFluxRequired(pd.name());

    scalar pRefValue = 0.0;

    if (pd.needReference())
    {
        pRefValue = readScalar(pimple.dict().lookup("pRefValue"));

        p += dimensionedScalar
        (
            "p",
            p.dimensions(),
            pRefValue - getRefCellValue(p, pdRefCell)
        );
    }

    // Construct incompressible turbulence model
    autoPtr<incompressible::turbulenceModel> turbulence
    (
        incompressible::turbulenceModel::New(U, phi, mixture)
    );