Info<< "Reading thermophysical properties\n" << endl;

autoPtr<fluidThermo> pThermo
(
    fluidThermo::New(mesh)
);
fluidThermo& thermo = pThermo();
thermo.validate(args.executable(), "h", "e");

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

volScalarField rho
(
    IOobject
    (
        "rho",
        runTime.timeName(),
        mesh,
        IOobject::READ_IF_PRESENT,
        IOobject::AUTO_WRITE
    ),
    thermo.rho()
);

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

Info<< "Calculating face flux field phi\n" << endl;

surfaceScalarField phi
(
    IOobject
    (
        "phi",
        runTime.timeName(),
        mesh,
        IOobject::READ_IF_PRESENT,
        IOobject::AUTO_WRITE
    ),
    linearInterpolate(rho)*linearInterpolate(U) & mesh.Sf()
);

Info<< "Calculating face flux field phiByRho\n" << endl;

surfaceScalarField phiByRho
(
    IOobject
    (
        "phiByRho",
        runTime.timeName(),
        mesh,
        IOobject::READ_IF_PRESENT,
        IOobject::AUTO_WRITE
    ),
    phi/linearInterpolate(rho)
);

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

mesh.setFluxRequired(p.name());

#include "createMRF.H"

Info<< "Creating compressibility field psi\n" << endl;
volScalarField psi("psi", 1.0/((thermo.Cp() - thermo.Cv())*T));
psi.oldTime() = 1.0/((thermo.Cp() - thermo.Cv())*T.oldTime());
psi.oldTime().oldTime() = 1.0/((thermo.Cp()-thermo.Cv())*T.oldTime().oldTime());