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    Info<< "Creating combustion model\n" << endl;

    autoPtr<combustionModels::psiCombustionModel> combustion
    (
        combustionModels::psiCombustionModel::New(mesh)
    );

    psiReactionThermo& thermo = combustion->thermo();
    thermo.validate(args.executable(), "h", "e");

    SLGThermo slgThermo(mesh, thermo);

    basicSpecieMixture& composition = thermo.composition();
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    PtrList<volScalarField>& Y = composition.Y();

    const word inertSpecie(thermo.lookup("inertSpecie"));

    Info<< "Creating field rho\n" << endl;
    volScalarField rho
    (
        IOobject
        (
            "rho",
            runTime.timeName(),
            mesh,
            IOobject::NO_READ,
            IOobject::AUTO_WRITE
        ),
        thermo.rho()
    );

    volScalarField& p = thermo.p();
    const volScalarField& T = thermo.T();
    const volScalarField& psi = thermo.psi();

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

    #include "compressibleCreatePhi.H"

    Info<< "Creating turbulence model\n" << endl;
    autoPtr<compressible::turbulenceModel> turbulence
    (
        compressible::turbulenceModel::New
        (
            rho,
            U,
            phi,
            thermo
        )
    );

    // Set the turbulence into the combustion model
    combustion->setTurbulence(turbulence());

    Info<< "Creating field dpdt\n" << endl;
    volScalarField dpdt
    (
        IOobject
        (
            "dpdt",
            runTime.timeName(),
            mesh
        ),
        mesh,
        dimensionedScalar("dpdt", p.dimensions()/dimTime, 0)
    );

    Info<< "Creating field kinetic energy K\n" << endl;
    volScalarField K("K", 0.5*magSqr(U));


    #include "readGravitationalAcceleration.H"
    #include "readhRef.H"

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    Info<< "Calculating field g.h\n" << endl;
    dimensionedScalar ghRef(g & (cmptMag(g.value())/mag(g.value()))*hRef);
    volScalarField gh("gh", (g & mesh.C()) - ghRef);
    surfaceScalarField ghf("ghf", (g & mesh.Cf()) - ghRef);
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    volScalarField p_rgh
    (
        IOobject
        (
            "p_rgh",
            runTime.timeName(),
            mesh,
            IOobject::MUST_READ,
            IOobject::AUTO_WRITE
        ),
        mesh
    );

    // Force p_rgh to be consistent with p
    p_rgh = p - rho*gh;

    multivariateSurfaceInterpolationScheme<scalar>::fieldTable fields;

    forAll(Y, i)
    {
        fields.add(Y[i]);
    }
    fields.add(thermo.he());

    IOdictionary additionalControlsDict
    (
        IOobject
        (
            "additionalControls",
            runTime.constant(),
            mesh,
            IOobject::MUST_READ_IF_MODIFIED,
            IOobject::NO_WRITE
        )
    );

    Switch solvePrimaryRegion
    (
        additionalControlsDict.lookup("solvePrimaryRegion")
    );

    volScalarField dQ
    (
        IOobject
        (
            "dQ",
            runTime.timeName(),
            mesh,
            IOobject::NO_READ,
            IOobject::AUTO_WRITE
        ),
        mesh,
        dimensionedScalar("dQ", dimEnergy/dimTime, 0.0)
    );