OpenFOAM: API Guide
v2112
The open source CFD toolbox
setMultiRegionDeltaT.H
Go to the documentation of this file.
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/*---------------------------------------------------------------------------*\
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========= |
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\\ / F ield | OpenFOAM: The Open Source CFD Toolbox
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\\ / O peration |
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\\ / A nd | www.openfoam.com
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\\/ M anipulation |
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-------------------------------------------------------------------------------
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Copyright (C) 2011 OpenFOAM Foundation
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-------------------------------------------------------------------------------
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License
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This file is part of OpenFOAM.
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OpenFOAM is free software: you can redistribute it and/or modify it
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under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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OpenFOAM is distributed in the hope that it will be useful, but WITHOUT
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ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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for more details.
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You should have received a copy of the GNU General Public License
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along with OpenFOAM. If not, see <http://www.gnu.org/licenses/>.
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Global
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setMultiRegionDeltaT
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Description
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Reset the timestep to maintain a constant maximum courant and
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diffusion Numbers. Reduction of time-step is immediate, but
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increase is damped to avoid unstable oscillations.
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\*---------------------------------------------------------------------------*/
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if
(
adjustTimeStep
)
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{
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if
(
CoNum
== -GREAT)
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{
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CoNum
= SMALL;
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}
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if
(
DiNum
== -GREAT)
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{
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DiNum
= SMALL;
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}
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scalar maxDeltaTFluid =
maxCo
/(
CoNum
+ SMALL);
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scalar maxDeltaTSolid =
maxDi
/(
DiNum
+ SMALL);
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scalar deltaTFluid =
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min
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(
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min
(maxDeltaTFluid, 1.0 + 0.1*maxDeltaTFluid),
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1.2
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);
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runTime
.setDeltaT
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(
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min
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(
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min
(deltaTFluid, maxDeltaTSolid)*
runTime
.deltaT().value(),
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maxDeltaT
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)
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);
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Info
<<
"deltaT = "
<<
runTime
.deltaT().value() <<
endl
;
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}
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// ************************************************************************* //
runTime
engineTime & runTime
Definition:
createEngineTime.H:13
maxDeltaT
maxDeltaT
Definition:
readEngineTimeControls.H:3
Foam::endl
Ostream & endl(Ostream &os)
Add newline and flush stream.
Definition:
Ostream.H:369
Foam::min
label min(const labelHashSet &set, label minValue=labelMax)
Find the min value in labelHashSet, optionally limited by second argument.
Definition:
hashSets.C:33
Foam::Info
messageStream Info
Information stream (stdout output on master, null elsewhere)
DiNum
scalar DiNum
Definition:
solidRegionDiffusionNo.H:1
adjustTimeStep
bool adjustTimeStep
Definition:
createTimeControls.H:32
maxDi
scalar maxDi
Definition:
createRegionControls.H:23
CoNum
scalar CoNum
Definition:
compressibleCourantNo.H:31
maxCo
scalar maxCo
Definition:
createTimeControls.H:35
applications
solvers
heatTransfer
chtMultiRegionFoam
include
setMultiRegionDeltaT.H
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