| /*---------------------------------------------------------------------------*\ | |
| ========= | | |
| \\ / 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 | |
| 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::Lagrangian::diskInjection | |
| Description | |
| Disk injection model. This injects particles continuously over a disk with | |
| a given number rate. The disk is characterised by a centre, and axis and an | |
| inner and an outer diameter. The centre and axis and number rate are all | |
| Function1-s 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 | |
| centre | The centre of the disk | yes | | |
| axis | The axis normal to the disk | yes | | |
| diameter | The diameter of the circle | if innerDiameter \ | |
| and outerDiameter \ | |
| are not specified | | |
| innerDiameter | The inner diameter of the annulus | if diameter is not \ | |
| specified | | |
| outerDiameter | The outer diameter of the annulus | if diameter is not \ | |
| specified | | |
| 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 | |
| diskInjection.C | |
| \*---------------------------------------------------------------------------*/ | |
| // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * // | |
| namespace Foam | |
| { | |
| namespace Lagrangian | |
| { | |
| /*---------------------------------------------------------------------------*\ | |
| Class diskInjection Declaration | |
| \*---------------------------------------------------------------------------*/ | |
| class diskInjection | |
| : | |
| public LagrangianInjection | |
| { | |
| private: | |
| // Private Data | |
| //- The centre of the disk | |
| autoPtr<Function1<point>> centre_; | |
| //- The axis of the disk | |
| autoPtr<Function1<vector>> axis_; | |
| //- The inner diameter | |
| scalar innerDiameter_; | |
| //- The outer diameter | |
| scalar outerDiameter_; | |
| //- 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_; | |
| //- Cached axes | |
| mutable autoPtr<LagrangianSubVectorField> axisPtr_; | |
| //- Cached radius fractions | |
| mutable autoPtr<LagrangianSubScalarField> rFracPtr_; | |
| //- Cached radial vectors | |
| mutable autoPtr<LagrangianSubVectorField> radialPtr_; | |
| // Private Member Functions | |
| //- Non-virtual read | |
| void readCoeffs(const dictionary& modelDict); | |
| public: | |
| //- Runtime type information | |
| TypeName("diskInjection"); | |
| // Constructors | |
| //- Construct from components | |
| diskInjection | |
| ( | |
| const word& name, | |
| const LagrangianMesh& mesh, | |
| const dictionary& modelDict, | |
| const dictionary& stateDict | |
| ); | |
| // Member Functions | |
| // Access | |
| //- Return the area of the disk | |
| const dimensionedScalar area() const; | |
| //- Access the cached axes. Only valid during injection. | |
| const LagrangianSubVectorField& axis() const; | |
| //- Access the cached radius fractions. Only valid during injection. | |
| const LagrangianSubScalarField& rFrac() const; | |
| //- Access the cached radial vectors. Only valid during injection. | |
| const LagrangianSubVectorField& radial() const; | |
| //- Create new elements in the Lagrangian mesh | |
| LagrangianSubMesh modify | |
| ( | |
| LagrangianMesh& mesh, | |
| const LagrangianSubMesh& | |
| ) const; | |
| // IO | |
| //- Read dictionary | |
| virtual bool read(const dictionary& modelDict); | |
| //- Write state | |
| virtual void writeState(Ostream& os) const; | |
| }; | |
| // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * // | |
| } // End namespace Lagrangian | |
| } // End namespace Foam | |
| // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * // | |
| // ************************************************************************* // | |