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MULES limitation removed: sub-cycling time now supported on morphing meshes

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Support for cell-volume interpolation during time sub-cycling now provided and
used in the MULES VoF solver to allow sub-cycling on morphing meshes.
This commit is contained in:
henry
2010-03-15 17:02:12 +00:00
parent 5e8d714dff
commit dbe29112e3
11 changed files with 125 additions and 38 deletions
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14
src/OpenFOAM/db/Time/Time.C
View File

@ -2,7 +2,7 @@
========= |
\\ / F ield | OpenFOAM: The Open Source CFD Toolbox
\\ / O peration |
\\ / A nd | Copyright (C) 1991-2009 OpenCFD Ltd.
\\ / A nd | Copyright (C) 1991-2010 OpenCFD Ltd.
\\/ M anipulation |
-------------------------------------------------------------------------------
License
@ -625,21 +625,25 @@ void Foam::Time::setDeltaT(const scalar deltaT)
Foam::TimeState Foam::Time::subCycle(const label nSubCycles)
{
subCycling_ = true;
prevTimeState_.set(new TimeState(*this));
TimeState ts = *this;
setTime(*this - deltaT(), (timeIndex() - 1)*nSubCycles);
deltaT_ /= nSubCycles;
deltaT0_ /= nSubCycles;
deltaTSave_ = deltaT0_;
return ts;
return prevTimeState();
}
void Foam::Time::endSubCycle(const TimeState& ts)
void Foam::Time::endSubCycle()
{
if (subCycling_)
{
subCycling_ = false;
TimeState::operator=(ts);
TimeState::operator=(prevTimeState());
prevTimeState_.clear();
}
}

21
src/OpenFOAM/db/Time/Time.H
View File

@ -2,7 +2,7 @@
========= |
\\ / F ield | OpenFOAM: The Open Source CFD Toolbox
\\ / O peration |
\\ / A nd | Copyright (C) 1991-2009 OpenCFD Ltd.
\\ / A nd | Copyright (C) 1991-2010 OpenCFD Ltd.
\\/ M anipulation |
-------------------------------------------------------------------------------
License
@ -127,6 +127,9 @@ protected:
//- Is the time currently being sub-cycled?
bool subCycling_;
//- If time is being sub-cycled this is the previous TimeState
autoPtr<TimeState> prevTimeState_;
//- Time directory name format
static fmtflags format_;
@ -347,6 +350,18 @@ public:
return functionObjects_;
}
//- Return true if time currently being sub-cycled, otherwise false
bool subCycling() const
{
return subCycling_;
}
//- Return previous TimeState if time is being sub-cycled
const TimeState& prevTimeState() const
{
return prevTimeState_();
}
// Check
@ -427,8 +442,8 @@ public:
//- Set time to sub-cycle for the given number of steps
virtual TimeState subCycle(const label nSubCycles);
//- Reset time after sub-cycling back to given TimeState
virtual void endSubCycle(const TimeState&);
//- Reset time after sub-cycling back to previous TimeState
virtual void endSubCycle();
//- Return non-const access to the list of function objects
functionObjectList& functionObjects()

9
src/OpenFOAM/db/Time/subCycleTime.C
View File

@ -32,9 +32,10 @@ Foam::subCycleTime::subCycleTime(Time& t, const label nSubCycles)
:
time_(t),
nSubCycles_(nSubCycles),
subCycleIndex_(0),
initialTimeState_(time_.subCycle(nSubCycles_))
{}
subCycleIndex_(0)
{
time_.subCycle(nSubCycles_);
}
// * * * * * * * * * * * * * * * * Destructor * * * * * * * * * * * * * * * //
@ -55,7 +56,7 @@ bool Foam::subCycleTime::end() const
void Foam::subCycleTime::endSubCycle()
{
time_.endSubCycle(initialTimeState_);
time_.endSubCycle();
}

1
src/OpenFOAM/db/Time/subCycleTime.H
View File

@ -55,7 +55,6 @@ class subCycleTime
label nSubCycles_;
label subCycleIndex_;
TimeState initialTimeState_;
public:

14
src/finiteVolume/fvMatrices/solvers/MULES/MULESTemplates.C
View File

@ -2,7 +2,7 @@
========= |
\\ / F ield | OpenFOAM: The Open Source CFD Toolbox
\\ / O peration |
\\ / A nd | Copyright (C) 1991-2009 OpenCFD Ltd.
\\ / A nd | Copyright (C) 1991-2010 OpenCFD Ltd.
\\/ M anipulation |
-------------------------------------------------------------------------------
License
@ -34,6 +34,7 @@ License
#include "fvcSurfaceIntegrate.H"
#include "slicedSurfaceFields.H"
#include "syncTools.H"
#include "fvm.H"
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
@ -107,7 +108,7 @@ void Foam::MULES::explicitSolve
{
psiIf =
(
mesh.V0()*rho.oldTime()*psi0/(deltaT*mesh.V())
mesh.Vsc0()*rho.oldTime()*psi0/(deltaT*mesh.Vsc())
+ Su.field()
- psiIf
)/(rho/deltaT - Sp.field());
@ -325,7 +326,8 @@ void Foam::MULES::limiter
const unallocLabelList& owner = mesh.owner();
const unallocLabelList& neighb = mesh.neighbour();
const scalarField& V = mesh.V();
tmp<volScalarField::DimensionedInternalField> tVsc = mesh.Vsc();
const scalarField& V = tVsc();
const scalar deltaT = mesh.time().deltaTValue();
const scalarField& phiBDIf = phiBD;
@ -452,14 +454,16 @@ void Foam::MULES::limiter
if (mesh.moving())
{
tmp<volScalarField::DimensionedInternalField> V0 = mesh.Vsc0();
psiMaxn =
V*((rho/deltaT - Sp)*psiMaxn - Su)
- (mesh.V0()/deltaT)*rho.oldTime()*psi0
- (V0()/deltaT)*rho.oldTime()*psi0
+ sumPhiBD;
psiMinn =
V*(Su - (rho/deltaT - Sp)*psiMinn)
+ (mesh.V0()/deltaT)*rho.oldTime()*psi0
+ (V0/deltaT)*rho.oldTime()*psi0
- sumPhiBD;
}
else

6
src/finiteVolume/fvMesh/fvMesh.H
View File

@ -269,6 +269,12 @@ public:
//- Return old-old-time cell volumes
const DimensionedField<scalar, volMesh>& V00() const;
//- Return sub-cycle cell volumes
tmp<DimensionedField<scalar, volMesh> > Vsc() const;
//- Return sub-cycl old-time cell volumes
tmp<DimensionedField<scalar, volMesh> > Vsc0() const;
//- Return cell face area vectors
const surfaceVectorField& Sf() const;

57
src/finiteVolume/fvMesh/fvMeshGeometry.C
View File

@ -285,6 +285,63 @@ const volScalarField::DimensionedInternalField& fvMesh::V00() const
}
tmp<volScalarField::DimensionedInternalField> fvMesh::Vsc() const
{
if (moving() && time().subCycling())
{
const TimeState& ts = time();
const TimeState& ts0 = time().prevTimeState();
scalar tFrac =
(
ts.value() - (ts0.value() - ts0.deltaTValue())
)/ts0.deltaTValue();
if (tFrac < (1 - SMALL))
{
return V0() + tFrac*(V() - V0());
}
else
{
return V();
}
}
else
{
return V();
}
}
tmp<volScalarField::DimensionedInternalField> fvMesh::Vsc0() const
{
if (moving() && time().subCycling())
{
const TimeState& ts = time();
const TimeState& ts0 = time().prevTimeState();
scalar t0Frac =
(
(ts.value() - ts.deltaTValue())
- (ts0.value() - ts0.deltaTValue())
)/ts0.deltaTValue();
if (t0Frac > SMALL)
{
return V0() + t0Frac*(V() - V0());
}
else
{
return V0();
}
}
else
{
return V0();
}
}
const surfaceVectorField& fvMesh::Sf() const
{
if (!SfPtr_)

3
tutorials/multiphase/interDyMFoam/ras/floatingObject/0.org/pointDisplacement
View File

@ -37,7 +37,8 @@ boundaryField
centreOfMass (0.5 0.5 0.5);
momentOfInertia (0.08622222 0.08622222 0.144);
mass 9.6;
rhoInf 1; // for forces calculation
rhoInf 1;
report on;
value uniform (0 0 0);
}
}

2
tutorials/multiphase/interDyMFoam/ras/floatingObject/constant/polyMesh/boundary
View File

@ -1,7 +1,7 @@
/*--------------------------------*- C++ -*----------------------------------*\
| ========= | |
| \\ / F ield | OpenFOAM: The Open Source CFD Toolbox |
| \\ / O peration | Version: 1.6.x |
| \\ / O peration | Version: dev |
| \\ / A nd | Web: www.OpenFOAM.org |
| \\/ M anipulation | |
\*---------------------------------------------------------------------------*/

8
tutorials/multiphase/interDyMFoam/ras/floatingObject/system/controlDict
View File

@ -17,7 +17,7 @@ FoamFile
application interDyMFoam;
startFrom startTime;
startFrom latestTime;
startTime 0;
@ -29,7 +29,7 @@ deltaT 0.01;
writeControl adjustableRunTime;
writeInterval 0.025;
writeInterval 0.1;
purgeWrite 0;
@ -47,9 +47,9 @@ runTimeModifiable yes;
adjustTimeStep yes;
maxCo 0.2;
maxCo 0.5;
maxDeltaT 0.025;
maxDeltaT 0.01;
libs
(

26
tutorials/multiphase/interDyMFoam/ras/floatingObject/system/fvSolution
View File

@ -20,7 +20,7 @@ solvers
cellDisplacement
{
solver GAMG;
tolerance 1e-08;
tolerance 1e-5;
relTol 0;
smoother GaussSeidel;
cacheAgglomeration true;
@ -35,7 +35,7 @@ solvers
preconditioner
{
preconditioner GAMG;
tolerance 1e-05;
tolerance 1e-5;
relTol 0;
smoother DICGaussSeidel;
nPreSweeps 0;
@ -55,7 +55,7 @@ solvers
p
{
solver GAMG;
tolerance 1e-08;
tolerance 1e-8;
relTol 0.01;
smoother DIC;
nPreSweeps 0;
@ -73,7 +73,7 @@ solvers
preconditioner
{
preconditioner GAMG;
tolerance 2e-09;
tolerance 1e-8;
relTol 0;
nVcycles 2;
smoother DICGaussSeidel;
@ -86,7 +86,7 @@ solvers
mergeLevels 1;
}
tolerance 2e-09;
tolerance 1e-8;
relTol 0;
maxIter 20;
}
@ -95,18 +95,18 @@ solvers
{
solver smoothSolver;
smoother GaussSeidel;
tolerance 1e-06;
tolerance 1e-6;
relTol 0;
nSweeps 1;
}
"(k|epsilon|R|nuTilda)"
"(k|epsilon|omega|R|nuTilda)"
{
$U;
tolerance 1e-08;
solver PBiCG;
preconditioner DILU;
tolerance 1e-8;
relTol 0;
}
}
PISO
@ -115,14 +115,14 @@ PISO
nCorrectors 2;
nNonOrthogonalCorrectors 0;
nAlphaCorr 1;
nAlphaSubCycles 1;
cAlpha 1.5;
nAlphaSubCycles 3;
cAlpha 1;
correctPhi yes;
}
relaxationFactors
{
U 1;
"(U|k|epsilon|omega|R|nuTilda)" 1;
}