foam-extend4.1-coherent-io/tutorials/basic/PODSolver/1DPODsin/setTcos/setTcos.C

/*---------------------------------------------------------------------------*\
  =========                 |
  \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
   \\    /   O peration     |
    \\  /    A nd           | Copyright held by original author
     \\/     M anipulation  |
-------------------------------------------------------------------------------
License
    This file is part of OpenFOAM.

    OpenFOAM is free software; you can redistribute it and/or modify it
    under the terms of the GNU General Public License as published by the
    Free Software Foundation; either version 2 of the License, or (at your
    option) any later version.

    OpenFOAM is distributed in the hope that it will be useful, but WITHOUT
    ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
    FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
    for more details.

    You should have received a copy of the GNU General Public License
    along with OpenFOAM; if not, write to the Free Software Foundation,
    Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA

Description
    Set up the gamma field

\*---------------------------------------------------------------------------*/

#include "fvCFD.H"
#include "mathematicalConstants.H"

// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //

int main(int argc, char *argv[])
{

#   include "setRootCase.H"
#   include "createTime.H"
#   include "createMesh.H"

    Info<< "Time = " << runTime.value() << endl;

    Info<< "    Reading field T" << endl;
    volScalarField T
    (
        IOobject
        (
            "T",
            runTime.timeName(),
            mesh,
            IOobject::MUST_READ,
            IOobject::NO_WRITE
        ),
        mesh
    );

    // Do cells
    const volVectorField& centres = mesh.C();

    Info << pos(0.02 - centres.internalField().component(vector::X))*
            centres.internalField().component(vector::X)/0.02 << endl;
    T.internalField() =
        pos(0.02 - centres.internalField().component(vector::X))*
        (
            Foam::cos
            (
                centres.internalField().component(vector::X)/0.02*
                mathematicalConstant::pi
            )/2.0 + 0.5
        );

    T.write();

    Info<< "End\n" << endl;

    return(0);
}


// ************************************************************************* //