/*---------------------------------------------------------------------------*\
  =========                 |
  \\      /  F ield         | foam-extend: Open Source CFD
   \\    /   O peration     |
    \\  /    A nd           | For copyright notice see file Copyright
     \\/     M anipulation  |
-------------------------------------------------------------------------------
License
    This file is part of foam-extend.

    foam-extend 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 3 of the License, or (at your
    option) any later version.

    foam-extend 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 foam-extend.  If not, see <http://www.gnu.org/licenses/>.

Application
    sonicFoamAutoMotion

Description
    Transient solver for trans-sonic/supersonic, laminar flow of a
    compressible gas with mesh motion..

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

#include "fvCFD.H"
#include "motionSolver.H"

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

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

#   include "setRootCase.H"
#   include "createTime.H"
#   include "createMesh.H"
#   include "readThermodynamicProperties.H"
#   include "readTransportProperties.H"
#   include "createFields.H"
#   include "initContinuityErrs.H"

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

    Info<< "\nStarting time loop\n" << endl;

    autoPtr<Foam::motionSolver> motionPtr = motionSolver::New(mesh);

    for (runTime++; !runTime.end(); runTime++)
    {
        Info<< "Time = " << runTime.timeName() << nl << endl;

#       include "readPISOControls.H"
#       include "compressibleCourantNo.H"

        mesh.movePoints(motionPtr->newPoints());

#       include "rhoEqn.H"

        fvVectorMatrix UEqn
        (
            fvm::ddt(rho, U)
          + fvm::div(phi, U)
          - fvm::laplacian(mu, U)
        );

        solve(UEqn == -fvc::grad(p));

        solve
        (
            fvm::ddt(rho, e)
          + fvm::div(phi, e)
          - fvm::laplacian(mu, e)
          ==
          - p*fvc::div(phi/fvc::interpolate(rho) + fvc::meshPhi(rho, U))
          + mu*magSqr(symm(fvc::grad(U)))
        );

        T = e/Cv;
        psi = 1.0/(R*T);

        // --- PISO loop

        for (int corr = 0; corr < nCorr; corr++)
        {
            U = UEqn.H()/UEqn.A();

            surfaceScalarField phid
            (
                "phid",
                fvc::interpolate(psi)*
                (
                    (fvc::interpolate(U) & mesh.Sf()) - fvc::meshPhi(rho, U)
                )
            );

            for (int nonOrth=0; nonOrth<=nNonOrthCorr; nonOrth++)
            {
                fvScalarMatrix pEqn
                (
                    fvm::ddt(psi, p)
                  + fvm::div(phid, p)
                  - fvm::laplacian(rho/UEqn.A(), p)
                );

                pEqn.solve();

                phi = pEqn.flux();
            }

#           include "compressibleContinuityErrs.H"

            U -= fvc::grad(p)/UEqn.A();
            U.correctBoundaryConditions();
        }

        rho = psi*p;

        runTime.write();

        Info<< "ExecutionTime = " << runTime.elapsedCpuTime() << " s"
            << "  ClockTime = " << runTime.elapsedClockTime() << " s"
            << nl << endl;
    }

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

    return(0);
}


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