getCellVolume.C

/*---------------------------------------------------------------------------*\
  =========                 |
  \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
   \\    /   O peration     | Website:  https://openfoam.org
    \\  /    A nd           | Copyright (C) 2020 OpenFOAM Foundation
     \\/     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 3 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, see <http://www.gnu.org/licenses/>.

Application
    getCellVolume

Description

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

#include "fvCFD.H"

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

int main(int argc, char *argv[])
{
    #include "setRootCase.H"
    #include "createTime.H"
    #include "createMesh.H"
    // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //

      scalar totalVolume(0.0);
      scalar avgVolume(0.0);
      int counter;
      counter = 0;
      forAll(mesh.cells(), cellID)
      {
	totalVolume += mesh.V()[cellID];
	counter += 1;
      }

      avgVolume = totalVolume/counter;

     Info << nl << "Average cell Volume (V_bar): "<< avgVolume << nl << endl;
     Info << nl << "Total cell Volume (V): "<< totalVolume << nl << endl;
     Info << nl << "Average representative length scale (h): "<< std::pow(avgVolume,1/3.0) << nl << endl;

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

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

    return 0;
}


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