fixedTemperatureConstraint.H

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    Copyright (C) 2012-2017 OpenFOAM Foundation
    Copyright (C) 2020 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::fixedTemperatureConstraint
 
Group
    grpFvOptionsConstraints
 
Description
    Constrain temperature equation (i.e. \c T) with
    a given set of fixed values within a specified region.
 
    Constraints applied to:
    \verbatim
      T    | Temperature                   [K]
    \endverbatim
 
    Required fields:
    \verbatim
      T    | Temperature                   [K]
      e/h  | Internal energy/Enthalphy     [m2/s2]
    \endverbatim
 
Usage
    Minimal example by using \c constant/fvOptions:
    \verbatim
    fixedTemperatureConstraint1
    {
        // Mandatory entries (unmodifiable)
        type            fixedTemperatureConstraint;
        mode            <mode>;
 
        // Conditional mandatory/optional entries (runtime modifiable)
 
            // when mode=uniform (mandatory)
            temperature     constant 500; // fixed temperature with time [K]
 
            // when mode=lookup (optional)
            T            <Tname>;
 
        // Mandatory/Optional (inherited) entries
        ...
    }
    \endverbatim
 
    where the entries mean:
    \table
      Property  | Description                           | Type   | Reqd  | Dflt
      type      | Type name: fixedTemperatureConstraint | word   | yes   | -
      mode      | Temperature mode - see below          | word   | yes   | -
      temperature | Function1 type temperature field    | Function1 | cndtnl | -
      T         | Name of operand temperature field     | word   | cndtnl | T
    \endtable
 
    Options for the \c mode entry:
    \verbatim
      uniform | Use Function1 type temperature field
      lookup  | Use temperature field given field name
    \endverbatim
 
    The inherited entries are elaborated in:
     - \link fvOption.H \endlink
     - \link cellSetOption.H \endlink
 
Note:
  - The \c uniform option allows the use of a time-varying
    uniform temperature by means of the \c Function1 type.
 
See also
  - Foam::fv::limitTemperature
  - Foam::Function1
 
SourceFiles
    fixedTemperatureConstraint.C
 
\*---------------------------------------------------------------------------*/
 
#ifndef fixedTemperatureConstraint_H
#define fixedTemperatureConstraint_H
 
#include "cellSetOption.H"
#include "Enum.H"
#include "Function1.H"
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
namespace Foam
{
namespace fv
{
 
/*---------------------------------------------------------------------------*\
                 Class fixedTemperatureConstraint Declaration
\*---------------------------------------------------------------------------*/
 
class fixedTemperatureConstraint
:
    public fv::cellSetOption
{
public:
 
    //- Temperature mode
    enum temperatureMode
    {
        tmUniform,
        tmLookup
    };
 
    //- String representation of temperatureMode enums
    static const Enum<temperatureMode> temperatureModeNames_;
 
 
protected:
 
    // Protected Data
 
        //- Operation mode
        temperatureMode mode_;
 
        //- Uniform temperature [K]
        autoPtr<Function1<scalar>> Tuniform_;
 
        //- Temperature field name
        word TName_;
 
 
public:
 
    //- Runtime type information
    TypeName("fixedTemperatureConstraint");
 
 
    // Constructors
 
        //- Construct from components
        fixedTemperatureConstraint
        (
            const word& name,
            const word& modelType,
            const dictionary& dict,
            const fvMesh& mesh
        );
 
        //- No copy construct
        fixedTemperatureConstraint(const fixedTemperatureConstraint&) = delete;
 
        //- No copy assignment
        void operator=(const fixedTemperatureConstraint&) = delete;
 
 
    //- Destructor
    virtual ~fixedTemperatureConstraint() = default;
 
 
    // Member Functions
 
        //- Constrain energy equation to fix the temperature
        virtual void constrain(fvMatrix<scalar>& eqn, const label fieldi);
 
 
        // IO
 
            //- Read dictionary
            virtual bool read(const dictionary& dict);
};
 
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
} // End namespace fv
} // End namespace Foam
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
#endif
 
// ************************************************************************* //