windDrivenRainFoam.C

Go to the documentation of this file.

/*---------------------------------------------------------------------------*\
  =========                 |
  \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
   \\    /   O peration     |
    \\  /    A nd           | Copyright (C) 2004-2011 OpenCFD Ltd.
     \\/     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
    windDrivenRainFoam
 
Description
    Solves for wind-driven rain with an Eulerian multiphase model
    Written by Aytac Kubilay, March 2012, ETH Zurich/Empa
    
    Latest Update: 17.02.2015
 
\*---------------------------------------------------------------------------*/
 
#include "fvCFD.H"
#include "simpleControl.H"
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
#include "updateValues.H"
 
int main(int argc, char *argv[])
{
    #include "setRootCase.H"
    #include "createTime.H"
    #include "createMesh.H"
    #include "createFields.H"
    #include "readGravitationalAcceleration.H"
 
    simpleControl simple(mesh);
 
    // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
    #include "createRainFields.H"
    #include "createTDFields.H"
    
    if (solveTD)    { Info <<nl<< "Solving for the turbulent dispersion of raindrops" << endl; }
    else { Info <<nl<< "Turbulent dispersion of raindrops is neglected" << endl; }
    
    GET_parameters(temp,rhoa,mua,rhop);
    
    Info <<nl<< "Temperature: " << temp.value() << " K" << endl;
    Info << "Air density: " << rhoa.value() << " kg/m3" << endl;
    Info << "Air dynamic viscosity: " << mua.value() << " kg/m-s" << endl;
    Info << "Water density: " << rhop.value() << " kg/m3" << endl;
    
    while (simple.loop())
    {
        Info<< nl << "Time = " << runTime.timeName() << nl;
        
        for (int nonOrth=0; nonOrth<=simple.nNonOrthCorr(); nonOrth++)
        {
            for (int phase_no = 0; phase_no < phases.size(); phase_no++)
            {
                // phi is used by the inletOutlet boundary condition and courant number calculation
                surfaceScalarField phi
                (
                    IOobject
                    (
                        "phi",
                        runTime.timeName(),
                        mesh,
                        IOobject::NO_READ,
                        IOobject::NO_WRITE
                    ),
                    phirain[phase_no]
                );
 
                #include "CourantNo.H"
                
                #include "alphaEqns.H"
                
                dimensionedScalar dp ("dp", dimensionSet(0,1,0,0,0,0,0), phases[phase_no][0]);      
                            
                volScalarField magUr = mag(U - Urain[phase_no]);
                
                Re = (magUr*dp*rhoa)/mua;
                CdRe = GET_CdRe(Re);
                CdRe.correctBoundaryConditions();
 
                if (solveTD)
                { 
                    tfl = 0.2*(k/epsilon);
                    tp = (4*rhop*dp*dp)/(3*mua*CdRe);
                    Ctrain[phase_no] = sqrt( tfl/(tfl+tp) );
                }
                
                nutrain = nut*sqr(Ctrain[phase_no]);
                
                #include "UEqns.H"
 
            }
        }
 
        if (runTime.outputTime())
        {
            for (int phase_no = 0; phase_no < phases.size(); phase_no++)
            {
                Urain[phase_no].write();                
                alpharain[phase_no].write();
                //Ctrain[phase_no].write();
            }
        }
        runTime.write();
        
        Info<< "ExecutionTime = " << runTime.elapsedCpuTime() << " s"
            << " ClockTime = " << runTime.elapsedClockTime() << " s"
            << nl << endl;
    }
    
    Info<< "Writing final output\n" << endl;
    for (int phase_no = 0; phase_no < phases.size(); phase_no++)
    {
        Urain[phase_no].write();                
        alpharain[phase_no].write();
        //Ctrain[phase_no].write();
    }
    
    #include "calculateCatchRatio.H"
    
    Info<< "ExecutionTime = " << runTime.elapsedCpuTime() << " s"
            << "  ClockTime = " << runTime.elapsedClockTime() << " s"
            << nl << endl;
    
    Info<< "End\n" << endl;
 
    return 0;
}
 
// ************************************************************************* //