OpenFOAM-dev / data /src /fvConstraints /zeroDimensionalFixedPressure /zeroDimensionalFixedPressureConstraint.H
| /*---------------------------------------------------------------------------*\ | |
| ========= | | |
| \\ / F ield | OpenFOAM: The Open Source CFD Toolbox | |
| \\ / O peration | Website: https://openfoam.org | |
| \\ / A nd | Copyright (C) 2023-2026 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::fv::zeroDimensionalFixedPressureConstraint | |
| Description | |
| Zero-dimensional fixed pressure constraint. Should be used in conjunction | |
| with the zeroDimensionalFixedPressureModel. | |
| This constraint and model facilitates specification of a constant or | |
| time-varying pressure. It adds mass source terms proportional to the error | |
| that remains when the pressure equation is evaluated at the desired | |
| pressure. Iteration may be necessary to converge the constraint in the case | |
| of non-linear equations of state. | |
| Properties are added or removed with their current value. The model | |
| therefore represents a uniform expansion or contraction in infinite space. | |
| Usage | |
| Example usage: | |
| \verbatim | |
| { | |
| type zeroDimensionalFixedPressure; | |
| // Name of the pressure field, default = p | |
| //p p; | |
| // Name of the density field, default = rho | |
| //rho rho; | |
| // Pressure value | |
| pressure 1e5; | |
| } | |
| \endverbatim | |
| \*---------------------------------------------------------------------------*/ | |
| // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * // | |
| namespace Foam | |
| { | |
| namespace fv | |
| { | |
| class zeroDimensionalFixedPressureModel; | |
| /*---------------------------------------------------------------------------*\ | |
| Class zeroDimensionalFixedPressureConstraint Declaration | |
| \*---------------------------------------------------------------------------*/ | |
| class zeroDimensionalFixedPressureConstraint | |
| : | |
| public fvConstraint | |
| { | |
| // Private data | |
| //- Pressure field name, default = p | |
| word pName_; | |
| //- Density field name, default = rho | |
| word rhoName_; | |
| //- The pressure value | |
| autoPtr<Function1<scalar>> p_; | |
| //- The mass or volume source | |
| mutable autoPtr<volInternalScalarField> sourcePtr_; | |
| // Private Member Functions | |
| //- Access the corresponding model | |
| const zeroDimensionalFixedPressureModel& model() const; | |
| //- Get the mass source | |
| template<class AlphaFieldType> | |
| tmp<volInternalScalarField> massSource | |
| ( | |
| const AlphaFieldType& alpha, | |
| const volInternalScalarField& rho | |
| ) const; | |
| //- Non-virtual read | |
| void readCoeffs(const dictionary& dict); | |
| public: | |
| //- Runtime type information | |
| TypeName("zeroDimensionalFixedPressure"); | |
| // Constructors | |
| //- Construct from dictionary | |
| zeroDimensionalFixedPressureConstraint | |
| ( | |
| const word& name, | |
| const word& modelType, | |
| const fvMesh& mesh, | |
| const dictionary& dict | |
| ); | |
| //- Destructor | |
| virtual ~zeroDimensionalFixedPressureConstraint(); | |
| // Member Functions | |
| // Access | |
| //- Pressure field name | |
| inline const word& pName() const | |
| { | |
| return pName_; | |
| } | |
| //- Density field name | |
| inline const word& rhoName() const | |
| { | |
| return rhoName_; | |
| } | |
| // Checks | |
| //- Return the list of fields constrained by the fvConstraint | |
| virtual wordList constrainedFields() const; | |
| // Constraints | |
| //- Return the mass or volume source for the pressure equation | |
| tmp<volInternalScalarField> pEqnSource | |
| ( | |
| const volScalarField& rho, | |
| fvMatrix<scalar>& pEqn | |
| ) const; | |
| //- Return the mass source | |
| tmp<volInternalScalarField> massSource | |
| ( | |
| const volInternalScalarField& rho | |
| ) const; | |
| //- Return the mass source for a given phase | |
| tmp<volInternalScalarField> massSource | |
| ( | |
| const volInternalScalarField& alpha, | |
| const volInternalScalarField& rho | |
| ) const; | |
| //- Apply the constraint to the pressure equation | |
| virtual bool constrain | |
| ( | |
| fvMatrix<scalar>& pEqn, | |
| const word& fieldName | |
| ) const; | |
| // Mesh changes | |
| //- Update for mesh motion | |
| virtual bool movePoints(); | |
| //- 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& dict); | |
| }; | |
| // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * // | |
| } // End namespace fv | |
| } // End namespace Foam | |
| // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * // | |
| // ************************************************************************* // | |