zhyang-dev/openfoam
1
0
Fork 0
mirror of https://develop.openfoam.com/Development/openfoam.git synced 2025-11-28 03:28:01 +00:00
Code Issues Actions Packages Projects Releases Wiki Activity

ENH: Updated pressureGradientExplicitSource

Browse Source
This commit is contained in:
andy
2012-12-10 10:13:19 +00:00
parent 15b52c7ec5
commit 5527055a1c
2 changed files with 24 additions and 20 deletions
Download Patch File Download Diff File Expand all files Collapse all files

34
src/fieldSources/derived/pressureGradientExplicitSource/pressureGradientExplicitSource.C
View File

@ -46,7 +46,7 @@ namespace Foam
// * * * * * * * * * * * * * Private Member Functions * * * * * * * * * * * //
void Foam::pressureGradientExplicitSource::writeGradP() const
void Foam::pressureGradientExplicitSource::writeProps(const scalar gradP) const
{
// Only write on output time
if (mesh_.time().outputTime())
@ -63,7 +63,7 @@ void Foam::pressureGradientExplicitSource::writeGradP() const
IOobject::NO_WRITE
)
);
propsDict.add("gradient", gradP_);
propsDict.add("gradient", gradP);
propsDict.regIOobject::write();
}
}
@ -81,8 +81,8 @@ Foam::pressureGradientExplicitSource::pressureGradientExplicitSource
:
basicSource(sourceName, modelType, dict, mesh),
Ubar_(coeffs_.lookup("Ubar")),
gradPini_(coeffs_.lookup("gradPini")),
gradP_(gradPini_),
gradP0_(0.0),
dGradP_(0.0),
flowDir_(Ubar_/mag(Ubar_)),
invAPtr_(NULL)
{
@ -95,7 +95,7 @@ Foam::pressureGradientExplicitSource::pressureGradientExplicitSource
"Foam::pressureGradientExplicitSource::"
"pressureGradientExplicitSource"
"("
"onst word&, "
"const word&, "
"const word&, "
"const dictionary&, "
"const fvMesh&"
@ -116,10 +116,10 @@ Foam::pressureGradientExplicitSource::pressureGradientExplicitSource
{
Info<< " Reading pressure gradient from file" << endl;
dictionary propsDict(dictionary::null, propsFile);
propsDict.lookup("gradient") >> gradP_;
propsDict.lookup("gradient") >> gradP0_;
}
Info<< " Initial pressure gradient = " << gradP_ << nl << endl;
Info<< " Initial pressure gradient = " << gradP0_ << nl << endl;
}
@ -151,22 +151,21 @@ void Foam::pressureGradientExplicitSource::correct(volVectorField& U)
// Calculate the pressure gradient increment needed to adjust the average
// flow-rate to the desired value
scalar gradPplus = (mag(Ubar_) - magUbarAve)/rAUave;
dGradP_ = (mag(Ubar_) - magUbarAve)/rAUave;
// Apply correction to velocity field
forAll(cells_, i)
{
label cellI = cells_[i];
U[cellI] += flowDir_*rAU[cellI]*gradPplus;
U[cellI] += flowDir_*rAU[cellI]*dGradP_;
}
// Update pressure gradient
gradP_.value() += gradPplus;
scalar gradP = gradP0_ + dGradP_;
Info<< "Pressure gradient source: uncorrected Ubar = " << magUbarAve
<< ", pressure gradient = " << gradP_.value() << endl;
<< ", pressure gradient = " << gradP << endl;
writeGradP();
writeProps(gradP);
}
@ -187,10 +186,12 @@ void Foam::pressureGradientExplicitSource::addSup
IOobject::NO_WRITE
),
mesh_,
dimensionedVector("zero", gradP_.dimensions(), vector::zero)
dimensionedVector("zero", eqn.dimensions()/dimVolume, vector::zero)
);
UIndirectList<vector>(Su, cells_) = flowDir_*gradP_.value();
scalar gradP = gradP0_ + dGradP_;
UIndirectList<vector>(Su, cells_) = flowDir_*gradP;
eqn += Su;
}
@ -224,6 +225,9 @@ void Foam::pressureGradientExplicitSource::setValue
{
invAPtr_() = 1.0/eqn.A();
}
gradP0_ += dGradP_;
dGradP_ = 0.0;
}

10
src/fieldSources/derived/pressureGradientExplicitSource/pressureGradientExplicitSource.H
View File

@ -73,11 +73,11 @@ class pressureGradientExplicitSource
//- Average velocity
vector Ubar_;
//- Initial pressure gradient
dimensionedScalar gradPini_;
//- Pressure gradient before correction
scalar gradP0_;
//- Pressure gradient
dimensionedScalar gradP_;
//- Change in pressure gradient
scalar dGradP_;
//- Flow direction
vector flowDir_;
@ -89,7 +89,7 @@ class pressureGradientExplicitSource
// Private Member Functions
//- Write the pressure gradient to file (for restarts etc)
void writeGradP() const;
void writeProps(const scalar gradP) const;
//- Correct driving force for a constant mass flow rate
void update(fvMatrix<vector>& eqn);