| /*---------------------------------------------------------------------------*\ | |
| ========= | | |
| \\ / F ield | OpenFOAM: The Open Source CFD Toolbox | |
| \\ / O peration | Website: https://openfoam.org | |
| \\ / A nd | Copyright (C) 2024-2025 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::functionObjects::power | |
| Description | |
| Evaluates and writes the following power fields. | |
| \verbatim | |
| + tauUSf: tauf & Uf | |
| + divTauU: fvc::div(tauUSf) | |
| + divTauDotU: fvc::div(tauf) & U | |
| + tauDDotGradU: divTauU - divTauDotU | |
| + pUSf: -pIf & Uf | |
| + divPU: fvc::div(pUSf) | |
| + gradPU: -fvc::grad(p) & U | |
| + pDivU: divPU - gradPU | |
| + stressUSf: tauUSf + pUSf | |
| + divStressU: fvc::div(stressUSf) | |
| + divStressDotU: fvc::div(stressf) & U | |
| + stressDDotGradU: divStressU - divStressDotU | |
| \endverbatim | |
| where: | |
| \verbatim | |
| + p, U = cell centre pressure and velocity | |
| + pIf, Uf = face normal pressure force, and velocity, vectors | |
| + tauf = face shear force vectors [-transport.devTau()*mesh().magSf()] | |
| + stressf = tauf - pIf | |
| \endverbatim | |
| The domain integral of the volume fields (all except '...Sf' fields) is also | |
| printed to a log file in the postProcessing directory. Domain integrals are | |
| scaled by a factor, which defaults to 1e9, to make them easier to process. | |
| Usage | |
| An example is given below of a function object specification in the | |
| system/functions file with a scaling factor of 1e6 for the domain integrals | |
| \verbatim | |
| power | |
| { | |
| type power; | |
| libs ("libfieldFunctionObjects.so"); | |
| executeControl writeTime; | |
| writeControl writeTime; | |
| log true; | |
| factor 1e6; | |
| } | |
| \endverbatim | |
| Alternatively it can be specified using the standard 'power' function object | |
| configuration file as follows | |
| \verbatim | |
| #includeFunc power(factor=1e6) | |
| \endverbatim | |
| See also | |
| Foam::functionObject | |
| Foam::functionObjects::fvMeshFunctionObject | |
| Foam::functionObjects::logFiles | |
| Foam::functionObjects::writeLocalObjects | |
| Foam::functionObjects::timeControl | |
| SourceFiles | |
| power.C | |
| \*---------------------------------------------------------------------------*/ | |
| // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * // | |
| namespace Foam | |
| { | |
| namespace functionObjects | |
| { | |
| /*---------------------------------------------------------------------------*\ | |
| Class power Declaration | |
| \*---------------------------------------------------------------------------*/ | |
| class power | |
| : | |
| public fvMeshFunctionObject, | |
| public logFiles, | |
| public writeLocalObjects | |
| { | |
| // Private Static data | |
| //- List of the power field names | |
| static const wordList fields_; | |
| // Private Member data | |
| //- Scaling factor for the power output (defaults to 1e9) | |
| scalar factor_; | |
| // Private Member Functions | |
| //- File header information | |
| virtual void writeFileHeader(const label i); | |
| public: | |
| //- Runtime type information | |
| TypeName("power"); | |
| // Constructors | |
| //- Construct from Time and dictionary | |
| power | |
| ( | |
| const word& name, | |
| const Time& runTime, | |
| const dictionary& dict | |
| ); | |
| //- Disallow default bitwise copy construction | |
| power(const power&) = delete; | |
| //- Destructor | |
| virtual ~power(); | |
| // Member Functions | |
| //- Read the power data | |
| virtual bool read(const dictionary&); | |
| //- Return the list of fields required | |
| virtual wordList fields() const | |
| { | |
| return wordList::null(); | |
| } | |
| //- Calculate the power field | |
| virtual bool execute(); | |
| //- Write the power field | |
| virtual bool write(); | |
| // Member Operators | |
| //- Disallow default bitwise assignment | |
| void operator=(const power&) = delete; | |
| }; | |
| // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * // | |
| } // End namespace functionObjects | |
| } // End namespace Foam | |
| // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * // | |
| // ************************************************************************* // | |