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========= |
\\ / F ield | OpenFOAM: The Open Source CFD Toolbox
\\ / O peration | Website: https://openfoam.org
\\ / A nd | Copyright (C) 2025 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
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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
along with OpenFOAM. If not, see <http://www.gnu.org/licenses/>.
Class
Foam::Lagrangian::patchInjection
Description
Patch injection model. This injects particles continuously at a patch with
a given number rate. The number rate is a Function1 and can vary with time.
Note that this model only controls the number and position of injected
Lagrangian particles. All physical properties are specified by
corresponding source conditions. So the velocity/direction/angle/etc..., is
controlled by the velocity source condition, the size distribution by the
diameter source condition, and the flow rate by the number source
condition.
Usage
\table
Property | Description | Required? | Default
patch | Name of the patch | yes |
numberRate | The number of particles to inject per unit time | yes |
\endtable
Example specification:
\verbatim
<LagrangianModelName>
{
type patchInjection;
patch top;
numberRate 100000;
}
\endverbatim
See also
Foam::Function1s
SourceFiles
patchInjection.C
\*---------------------------------------------------------------------------*/
#ifndef patchInjection_H
#define patchInjection_H
#include "LagrangianInjection.H"
#include "cloudLagrangianModel.H"
#include "Function1.H"
#include "restartableRandomGenerator.H"
#include "CompactListList.H"
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
namespace Foam
{
namespace Lagrangian
{
/*---------------------------------------------------------------------------*\
Class patchInjection Declaration
\*---------------------------------------------------------------------------*/
class patchInjection
:
public LagrangianInjection,
private cloudLagrangianModel
{
private:
// Private Data
//- The name of the patch through which to inject
word patchName_;
//- The rate at which to inject
autoPtr<Function1<scalar>> numberRate_;
//- The number deferred to the next injection step
mutable scalar numberDeferred_;
//- A global random number generator
mutable restartableRandomGenerator globalRndGen_;
//- A local random number generator
mutable restartableRandomGenerator localRndGen_;
//- The time index
mutable label timeIndex_;
//- Cumulative sum of the total patch areas in each process
scalarList procSumArea_;
//- Cumulative sum of the face areas in the patch
scalarList patchFaceSumArea_;
//- Cumulative sum of the triangle areas in each patch face
CompactListList<scalar> patchFaceTriSumArea_;
// Private Member Functions
//- Non-virtual read
void readCoeffs(const dictionary& modelDict);
//- Initialise the area sums
void calcSumAreas();
public:
//- Runtime type information
TypeName("patchInjection");
// Constructors
//- Construct from components
patchInjection
(
const word& name,
const LagrangianMesh& mesh,
const dictionary& modelDict,
const dictionary& stateDict
);
// Member Functions
//- Correct the LagrangianModel
virtual void correct();
//- Create new elements in the Lagrangian mesh
LagrangianSubMesh modify
(
LagrangianMesh& mesh,
const LagrangianSubMesh&
) const;
// Mesh changes
//- Update topology using the given map
virtual void topoChange(const polyTopoChangeMap&);
//- Update from another mesh using the given map
virtual void mapMesh(const polyMeshMap&);
//- Redistribute or update using the given distribution map
virtual void distribute(const polyDistributionMap&);
// IO
//- Read dictionary
virtual bool read(const dictionary& modelDict);
//- Write state
virtual void writeState(Ostream& os) const;
//- Write state
virtual void writeProcessorState(Ostream& os) const;
};
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
} // End namespace Lagrangian
} // End namespace Foam
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
#endif
// ************************************************************************* //
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