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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::pointInjection
Description
Point injection model. This injects particles continuously at a point with
a given number rate. The point and the number rate are both Function1-s and
can both 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
point | The position at which to inject | yes |
numberRate | The number of particles to inject per unit time | yes |
\endtable
Example specification:
\verbatim
<LagrangianModelName>
{
type pointInjection;
point (1 2 3) [cm];
numberRate 10000;
}
\endverbatim
See also
Foam::Function1s
SourceFiles
pointInjection.C
\*---------------------------------------------------------------------------*/
#ifndef pointInjection_H
#define pointInjection_H
#include "LagrangianInjection.H"
#include "Function1.H"
#include "restartableRandomGenerator.H"
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
namespace Foam
{
namespace Lagrangian
{
/*---------------------------------------------------------------------------*\
Class pointInjection Declaration
\*---------------------------------------------------------------------------*/
class pointInjection
:
public LagrangianInjection
{
private:
// Private Data
//- The point at which to inject
autoPtr<Function1<point>> point_;
//- The rate at which to inject
autoPtr<Function1<scalar>> numberRate_;
//- The number deferred to the next injection step
mutable scalar numberDeferred_;
//- A random number generator
mutable restartableRandomGenerator rndGen_;
//- The time index
mutable label timeIndex_;
//- Where is the injection?
enum class injectionLocation
{
unset,
fixedPointOnThisProcessor,
fixedPointOnAnotherProcessor,
multiplePoints
} injectionLocation_;
//- The coordinates of the point
barycentric coordinates_;
//- The cell containing the point
label celli_;
//- The face adjacent to the tet containing the point
label facei_;
//- The face-tri adjacent to the tet containing the point
label faceTrii_;
// Private Member Functions
//- Non-virtual read
void readCoeffs(const dictionary& modelDict);
public:
//- Runtime type information
TypeName("pointInjection");
// Constructors
//- Construct from components
pointInjection
(
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;
};
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
} // End namespace Lagrangian
} // End namespace Foam
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
#endif
// ************************************************************************* //
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