OpenFOAM-dev / data /src /reactionModels /functionObjects /adjustTimeStepToReaction /adjustTimeStepToReaction.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. | |
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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::functionObjects::adjustTimeStepToReaction | |
| Description | |
| Returns the minimum bulk reaction time scale | |
| This allows the solver to temporally resolve chemical changes, in order to | |
| better couple the chemistry and transport, or to improve the time-accuracy | |
| of post-processing. | |
| Note that this function only does anything if time step adjustment is | |
| enabled in the controlDict. | |
| Example of function object specification: | |
| \verbatim | |
| adjustTimeStepToReaction | |
| { | |
| type adjustTimeStepToReaction; | |
| libs ("libreactionModels.so"); | |
| maxCo 0.1; | |
| extrapolate no; | |
| } | |
| \endverbatim | |
| Usage | |
| \table | |
| Property | Description | Required | Default value | |
| type | type name: adjustTimeStepToReaction | yes | | |
| phase | name of the reacting phase | no | | |
| maxCo | maximum reaction "Courant" number | no | 1 | |
| extrapolate | try to extrapolate decreases | no | false | |
| \endtable | |
| SourceFiles | |
| adjustTimeStepToReaction.C | |
| \*---------------------------------------------------------------------------*/ | |
| // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * // | |
| namespace Foam | |
| { | |
| namespace functionObjects | |
| { | |
| /*---------------------------------------------------------------------------*\ | |
| Class adjustTimeStepToReaction Declaration | |
| \*---------------------------------------------------------------------------*/ | |
| class adjustTimeStepToReaction | |
| : | |
| public regionFunctionObject | |
| { | |
| // Private Data | |
| //- Name of the phase | |
| word phaseName_; | |
| //- Maximum reaction "Courant" number. The maximum fraction of the | |
| // total reaction time-scale that should be evolved in a single | |
| // time-step. | |
| scalar maxCo_; | |
| //- Extrapolate reductions in time-step to try and better catch the | |
| // "onset" of reaction. Can lead to time-step oscillation. | |
| bool extrapolate_; | |
| //- Do we have the previous reaction time-step? | |
| mutable bool haveReactionDeltaT0_; | |
| //- The previous reaction time-step | |
| mutable scalar reactionDeltaT0_; | |
| // Private Member Functions | |
| //- Get the properties dictionary IO object | |
| typeIOobject<timeIOdictionary> propsDictIo | |
| ( | |
| const IOobject::readOption& r | |
| ) const; | |
| public: | |
| //- Runtime type information | |
| TypeName("adjustTimeStepToReaction"); | |
| // Constructors | |
| //- Construct from components | |
| adjustTimeStepToReaction | |
| ( | |
| const word& name, | |
| const Time& runTime, | |
| const dictionary& dict | |
| ); | |
| //- Disallow default bitwise copy construction | |
| adjustTimeStepToReaction(const adjustTimeStepToReaction&) = delete; | |
| // Destructor | |
| virtual ~adjustTimeStepToReaction(); | |
| // Member Functions | |
| //- Read and reset the timeStep Function1 | |
| virtual bool read(const dictionary&); | |
| //- Return the list of fields required | |
| virtual wordList fields() const | |
| { | |
| return wordList::null(); | |
| } | |
| //- Do nothing | |
| virtual bool execute(); | |
| //- Do nothing | |
| virtual bool write(); | |
| //- Return the minimum reaction time-scale | |
| virtual scalar maxDeltaT() const; | |
| // Member Operators | |
| //- Disallow default bitwise assignment | |
| void operator=(const adjustTimeStepToReaction&) = delete; | |
| }; | |
| // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * // | |
| } // End namespace functionObjects | |
| } // End namespace Foam | |
| // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * // | |
| // ************************************************************************* // | |