| /*---------------------------------------------------------------------------*\ | |
| ========= | | |
| \\ / F ield | OpenFOAM: The Open Source CFD Toolbox | |
| \\ / O peration | Website: https://openfoam.org | |
| \\ / A nd | Copyright (C) 2011-2022 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/>. | |
| Global | |
| setDeltaT | |
| Description | |
| Reset the timestep to maintain a constant maximum courant Number. | |
| Reduction of time-step is immediate, but increase is damped to avoid | |
| unstable oscillations. | |
| \*---------------------------------------------------------------------------*/ | |
| if (adjustTimeStep) | |
| { | |
| scalar deltaT = 1.2*runTime.deltaTValue(); | |
| if (CoNum > small) | |
| { | |
| deltaT = min(deltaT, maxCo/CoNum*runTime.deltaTValue()); | |
| } | |
| deltaT = min(min(deltaT, fvModels.maxDeltaT()), maxDeltaT); | |
| runTime.setDeltaT(deltaT); | |
| Info<< "deltaT = " << runTime.deltaTValue() << endl; | |
| } | |
| // ************************************************************************* // | |