openfoam/applications/solvers/heatTransfer/chtMultiRegionFoam/fluid/createFluidFields.H

    // Initialise fluid field pointer lists
    PtrList<basicRhoThermo> thermoFluid(fluidRegions.size());
    PtrList<volScalarField> rhoFluid(fluidRegions.size());
    PtrList<volScalarField> kappaFluid(fluidRegions.size());
    PtrList<volVectorField> UFluid(fluidRegions.size());
    PtrList<surfaceScalarField> phiFluid(fluidRegions.size());
    PtrList<uniformDimensionedVectorField> gFluid(fluidRegions.size());
    PtrList<compressible::turbulenceModel> turbulence(fluidRegions.size());
    PtrList<volScalarField> p_rghFluid(fluidRegions.size());
    PtrList<volScalarField> ghFluid(fluidRegions.size());
    PtrList<surfaceScalarField> ghfFluid(fluidRegions.size());
    PtrList<radiation::radiationModel> radiation(fluidRegions.size());
    PtrList<volScalarField> KFluid(fluidRegions.size());
    PtrList<volScalarField> dpdtFluid(fluidRegions.size());

    List<scalar> initialMassFluid(fluidRegions.size());

    // Populate fluid field pointer lists
    forAll(fluidRegions, i)
    {
        Info<< "*** Reading fluid mesh thermophysical properties for region "
            << fluidRegions[i].name() << nl << endl;

        Info<< "    Adding to thermoFluid\n" << endl;
        thermoFluid.set
        (
            i,
            basicRhoThermo::New(fluidRegions[i]).ptr()
        );

        Info<< "    Adding to rhoFluid\n" << endl;
        rhoFluid.set
        (
            i,
            new volScalarField
            (
                IOobject
                (
                    "rho",
                    runTime.timeName(),
                    fluidRegions[i],
                    IOobject::NO_READ,
                    IOobject::AUTO_WRITE
                ),
                thermoFluid[i].rho()
            )
        );

        Info<< "    Adding to kappaFluid\n" << endl;
        kappaFluid.set
        (
            i,
            new volScalarField
            (
                IOobject
                (
                    "kappa",
                    runTime.timeName(),
                    fluidRegions[i],
                    IOobject::NO_READ,
                    IOobject::NO_WRITE
                ),
                thermoFluid[i].Cp()*thermoFluid[i].alpha()
            )
        );

        Info<< "    Adding to UFluid\n" << endl;
        UFluid.set
        (
            i,
            new volVectorField
            (
                IOobject
                (
                    "U",
                    runTime.timeName(),
                    fluidRegions[i],
                    IOobject::MUST_READ,
                    IOobject::AUTO_WRITE
                ),
                fluidRegions[i]
            )
        );

        Info<< "    Adding to phiFluid\n" << endl;
        phiFluid.set
        (
            i,
            new surfaceScalarField
            (
                IOobject
                (
                    "phi",
                    runTime.timeName(),
                    fluidRegions[i],
                    IOobject::READ_IF_PRESENT,
                    IOobject::AUTO_WRITE
                ),
                linearInterpolate(rhoFluid[i]*UFluid[i])
                    & fluidRegions[i].Sf()
            )
        );

        Info<< "    Adding to gFluid\n" << endl;
        gFluid.set
        (
            i,
            new uniformDimensionedVectorField
            (
                IOobject
                (
                    "g",
                    runTime.constant(),
                    fluidRegions[i],
                    IOobject::MUST_READ,
                    IOobject::NO_WRITE
                )
            )
        );

        Info<< "    Adding to turbulence\n" << endl;
        turbulence.set
        (
            i,
            autoPtr<compressible::turbulenceModel>
            (
                compressible::turbulenceModel::New
                (
                    rhoFluid[i],
                    UFluid[i],
                    phiFluid[i],
                    thermoFluid[i]
                )
            ).ptr()
        );

        Info<< "    Adding to ghFluid\n" << endl;
        ghFluid.set
        (
            i,
            new volScalarField("gh", gFluid[i] & fluidRegions[i].C())
        );

        Info<< "    Adding to ghfFluid\n" << endl;
        ghfFluid.set
        (
            i,
            new surfaceScalarField("ghf", gFluid[i] & fluidRegions[i].Cf())
        );

        p_rghFluid.set
        (
            i,
            new volScalarField
            (
                IOobject
                (
                    "p_rgh",
                    runTime.timeName(),
                    fluidRegions[i],
                    IOobject::MUST_READ,
                    IOobject::AUTO_WRITE
                ),
                fluidRegions[i]
            )
        );

        // Force p_rgh to be consistent with p
        p_rghFluid[i] = thermoFluid[i].p() - rhoFluid[i]*ghFluid[i];

        radiation.set
        (
            i,
            radiation::radiationModel::New(thermoFluid[i].T())
        );

        initialMassFluid[i] = fvc::domainIntegrate(rhoFluid[i]).value();

        Info<< "    Adding to KFluid\n" << endl;
        KFluid.set
        (
            i,
            new volScalarField
            (
                "K",
                0.5*magSqr(UFluid[i])
            )
        );

        Info<< "    Adding to dpdtFluid\n" << endl;
        dpdtFluid.set
        (
            i,
            new volScalarField
            (
                "dpdt",
                fvc::ddt(thermoFluid[i].p())
            )
        );
    }