foam-extend4.1-coherent-io/applications/solvers/viscoelastic/viscoelasticFluidFoam/createFields.H

    Info << "Reading field p\n" << endl;
    volScalarField p
    (
        IOobject
        (
            "p",
            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"


    label pRefCell = 0;
    scalar pRefValue = 0.0;
    setRefCell(p, piso.dict(), pRefCell, pRefValue);
    mesh.schemesDict().setFluxRequired(p.name());

    // Create viscoelastic model
    viscoelasticModel visco(U, phi);