limitVelocity.H

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/*---------------------------------------------------------------------------*\
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    Copyright (C) 2016-2017 OpenFOAM Foundation
    Copyright (C) 2020-2022 OpenCFD Ltd.
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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/>.
 
Class
    Foam::fv::limitVelocity
 
Description
    Corrects velocity field (i.e. \c T) within a specified
    region by applying a given maximum velocity magnitude limit.
 
    Corrections applied to:
    \verbatim
      U    | Velocity                   [m/s]
    \endverbatim
 
    Required fields:
    \verbatim
      U    | Velocity                   [m/s]
    \endverbatim
 
Usage
    Minimal example by using \c constant/fvOptions:
    \verbatim
    limitVelocity1
    {
        // Mandatory entries (unmodifiable)
        type            limitVelocity;
 
        // Mandatory entries (runtime modifiable)
        max             <maxValue>;
 
        // Optional entries (runtime modifiable)
        U               <Uname>;
 
        // Mandatory/Optional (inherited) entries
        ...
    }
    \endverbatim
 
    where the entries mean:
    \table
      Property  | Description                   | Type   | Reqd  | Dflt
      type      | Type name: limitVelocity      | word   | yes   | -
      max       | Maximum velocity limit [m/s]  | scalar | yes   | -
      U         | Name of operand velocity field | word  | no    | U
    \endtable
 
    The inherited entries are elaborated in:
      - \link fvOption.H \endlink
      - \link cellSetOption.H \endlink
      - \link writeFile.H \endlink
 
See also
  - Foam::fv::velocityDampingConstraint
 
SourceFiles
    limitVelocity.C
 
\*---------------------------------------------------------------------------*/
 
#ifndef fv_limitVelocity_H
#define fv_limitVelocity_H
 
#include "cellSetOption.H"
#include "writeFile.H"
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
namespace Foam
{
namespace fv
{
 
/*---------------------------------------------------------------------------*\
                        Class limitVelocity Declaration
\*---------------------------------------------------------------------------*/
 
class limitVelocity
:
    public fv::cellSetOption,
    public functionObjects::writeFile
{
protected:
 
    // Protected Data
 
        //- Name of operand velocity field
        word UName_;
 
        //- Maximum velocity magnitude
        scalar max_;
 
 
    // Protected Member Functions
 
        //- Write file header information
        void writeFileHeader(Ostream& os);
 
 
public:
 
    //- Runtime type information
    TypeName("limitVelocity");
 
 
    // Constructors
 
        //- Construct from components
        limitVelocity
        (
            const word& name,
            const word& modelType,
            const dictionary& dict,
            const fvMesh& mesh
        );
 
        //- No copy construct
        limitVelocity(const limitVelocity&) = delete;
 
        //- No copy assignment
        void operator=(const limitVelocity&) = delete;
 
 
    //- Destructor
    virtual ~limitVelocity() = default;
 
 
    // Member Functions
 
        //- Read dictionary
        virtual bool read(const dictionary& dict);
 
        //- Correct the velocity field
        virtual void correct(volVectorField& U);
};
 
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
} // End namespace fv
} // End namespace Foam
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
#endif
 
// ************************************************************************* //