data/etc/codeTemplates/app/createFields.H

Info<< "Reading field p\n" << endl;
volScalarField p
(
    IOobject
    (
        "p",
        runTime.name(),
        mesh,
        IOobject::MUST_READ,
        IOobject::AUTO_WRITE
    ),
    mesh,
    dimensions::kinematicPressure // dimensions::pressure for compressible flow
);