fluidMaxDeltaT.C

Go to the documentation of this file.

/*---------------------------------------------------------------------------*\
  =========                 |
  \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
   \\    /   O peration     | Website:  https://openfoam.org
    \\  /    A nd           | Copyright (C) 2023-2024 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/>.
 
\*---------------------------------------------------------------------------*/
 
#include "fluidMaxDeltaT.H"
#include "fluidSolver.H"
#include "addToRunTimeSelectionTable.H"
 
// * * * * * * * * * * * * * * Static Data Members * * * * * * * * * * * * * //
 
namespace Foam
{
namespace functionObjects
{
    defineTypeNameAndDebug(fluidMaxDeltaT, 0);
 
    addToRunTimeSelectionTable
    (
        functionObject,
        fluidMaxDeltaT,
        dictionary
    );
}
}
 
 
// * * * * * * * * * * * * * * * * Constructors  * * * * * * * * * * * * * * //
 
Foam::functionObjects::fluidMaxDeltaT::fluidMaxDeltaT
(
    const word& name,
    const Time& runTime,
    const dictionary& dict
)
:
    fvMeshFunctionObject(name, runTime, dict)
{
    read(dict);
}
 
 
// * * * * * * * * * * * * * * * * Destructor  * * * * * * * * * * * * * * * //
 
Foam::functionObjects::fluidMaxDeltaT::~fluidMaxDeltaT()
{}
 
 
// * * * * * * * * * * * * * * * Member Functions  * * * * * * * * * * * * * //
 
bool Foam::functionObjects::fluidMaxDeltaT::read(const dictionary& dict)
{
    fvMeshFunctionObject::read(dict);
 
    maxCoPtr_ =
        Function1<scalar>::New
        (
            "maxCo",
            time_.userUnits(),
            dimless,
            dict
        );
    maxDeltaTPtr_ =
        Function1<scalar>::New
        (
            "maxDeltaT",
            time_.userUnits(),
            time_.userUnits(),
            dict
        );
 
    return true;
}
 
 
bool Foam::functionObjects::fluidMaxDeltaT::execute()
{
    return true;
}
 
 
bool Foam::functionObjects::fluidMaxDeltaT::write()
{
    return true;
}
 
 
Foam::scalar Foam::functionObjects::fluidMaxDeltaT::maxDeltaT() const
{
    scalar deltaT = maxDeltaTPtr_().value(time_.value());
 
    const scalar CoNum =
        mesh_.lookupObject<solvers::fluidSolver>(solver::typeName).CoNum;
 
    if (CoNum > small)
    {
        const scalar maxCo = maxCoPtr_().value(time_.value());
 
        deltaT = min(deltaT, maxCo/CoNum*time_.deltaTValue());
    }
 
    return deltaT;
}
 
 
// ************************************************************************* //