zhyang-dev/OpenFOAM-12
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

solvers: Adjust time step even if Courant number is zero

Browse Source 
This change means that even if the Courant number is zero, the time step
is adjusted based on maximum time step settings and/or constraints
specified by active fvModels. If none of these additional constraints
are present then adjustment is deactivated.
This commit is contained in:
Will Bainbridge
2023-01-25 13:53:00 +00:00
parent bc23162499
commit fcab778f57
13 changed files with 85 additions and 148 deletions
Download Patch File Download Diff File Expand all files Collapse all files

31
applications/solvers/modules/multiphaseEuler/multiphaseEuler/setRDeltaT.C
View File

@ -2,7 +2,7 @@
========= |
\\ / F ield | OpenFOAM: The Open Source CFD Toolbox
\\ / O peration | Website: https://openfoam.org
\\ / A nd | Copyright (C) 2022 OpenFOAM Foundation
\\ / A nd | Copyright (C) 2022-2023 OpenFOAM Foundation
\\/ M anipulation |
-------------------------------------------------------------------------------
License
@ -40,16 +40,6 @@ void Foam::solvers::multiphaseEuler::setRDeltaT()
pimpleDict.lookupOrDefault<scalar>("maxCo", 0.2)
);
const scalar maxDeltaT
(
pimpleDict.lookupOrDefault<scalar>("maxDeltaT", great)
);
const scalar minDeltaT
(
pimpleDict.lookupOrDefault<scalar>("minDeltaT", small)
);
const scalar rDeltaTSmoothingCoeff
(
pimpleDict.lookupOrDefault<scalar>("rDeltaTSmoothingCoeff", 0.02)
@ -64,16 +54,15 @@ void Foam::solvers::multiphaseEuler::setRDeltaT()
// Set the reciprocal time-step from the local Courant number
// and maximum and minimum time-steps
rDeltaT.ref() = min
(
1/dimensionedScalar(dimTime, minDeltaT),
max
(
1/dimensionedScalar(dimTime, maxDeltaT),
fvc::surfaceSum(maxPhi)()()
/((2*maxCo)*mesh.V())
)
);
rDeltaT.ref() = fvc::surfaceSum(maxPhi)()()/((2*maxCo)*mesh.V());
if (pimpleDict.found("maxDeltaT"))
{
rDeltaT.max(1/pimpleDict.lookup<scalar>("maxDeltaT"));
}
if (pimpleDict.found("minDeltaT"))
{
rDeltaT.min(1/pimpleDict.lookup<scalar>("minDeltaT"));
}
// Update the boundary values of the reciprocal time-step
rDeltaT.correctBoundaryConditions();