buoyancyEnergy.H

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    Copyright (C) 2018-2020 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
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    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
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Class
    Foam::fv::buoyancyEnergy
 
Group
    grpFvOptionsSources
 
Description
    Applies buoyancy energy sources (i.e. \c Sb)
    to the energy equation for compressible flows.
 
    \f[
        S_b = \rho (\vec{U} \cdot \vec{g})
    \f]
 
    where
    \vartable
      S_b     | Buoyancy energy source term
      \rho    | Fluid density
      \vec{U} | Velocity field
      \vec{g} | Gravitational acceleration field
    \endvartable
 
    Sources applied to either of the below, if exist:
    \verbatim
      e         | Internal energy                            [m2/s2]
      h         | Enthalphy                                  [m2/s2]
    \endverbatim
 
    Required fields:
    \verbatim
      U         | Velocity                                   [m/s]
      rho       | Fluid density                              [kg/m3]
    \endverbatim
 
Usage
    Minimal example by using \c constant/fvOptions:
    \verbatim
    buoyancyEnergy1
    {
        // Mandatory entries (unmodifiable)
        type             buoyancyEnergy;
        fields           (h);
 
        // Optional entries (runtime modifiable)
        U                U;
 
        // Mandatory/Optional (inherited) entries
        ...
    }
    \endverbatim
 
    where the entries mean:
    \table
      Property  | Description                       | Type   | Reqd  | Dflt
      type      | Type name: buoyancyEnergy         | word   | yes   | -
      fields    | Name of operand energy field      | word   | yes   | -
      U         | Name of operand velocity field    | word   | no    | U
    \endtable
 
    The inherited entries are elaborated in:
     - \link fvOption.H \endlink
 
Note
  - The entry \c fields accepts only a single field name.
  - The sources are applied onto the entire computational domain.
 
See also
  - Foam::fv::buoyancyForce
  - Foam::fv::buoyancyTurbSource
 
SourceFiles
    buoyancyEnergy.C
 
\*---------------------------------------------------------------------------*/
 
#ifndef buoyancyEnergy_H
#define buoyancyEnergy_H
 
#include "fvOption.H"
#include "uniformDimensionedFields.H"
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
namespace Foam
{
namespace fv
{
 
/*---------------------------------------------------------------------------*\
                       Class buoyancyEnergy Declaration
\*---------------------------------------------------------------------------*/
 
class buoyancyEnergy
:
    public fv::option
{
    // Private Data
 
        //- Name of operand velocity field
        word UName_;
 
 
public:
 
    //- Runtime type information
    TypeName("buoyancyEnergy");
 
 
    // Constructors
 
        //- Construct from explicit source name and mesh
        buoyancyEnergy
        (
            const word& sourceName,
            const word& modelType,
            const dictionary& dict,
            const fvMesh& mesh
        );
 
        //- No copy construct
        buoyancyEnergy(const buoyancyEnergy&) = delete;
 
        //- No copy assignment
        void operator=(const buoyancyEnergy&) = delete;
 
 
    //- Destructor
    virtual ~buoyancyEnergy() = default;
 
 
    // Member Functions
 
        //- Add explicit contribution to compressible momentum equation
        virtual void addSup
        (
            const volScalarField& rho,
            fvMatrix<scalar>& eqn,
            const label fieldi
        );
 
 
        //- Read source dictionary
        virtual bool read(const dictionary& dict);
};
 
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
} // End namespace fv
} // End namespace Foam
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
#endif
 
// ************************************************************************* //