zhyang-dev/openfoam
1
0
Fork 0
mirror of https://develop.openfoam.com/Development/openfoam.git synced 2025-12-28 03:37:59 +00:00
Code Issues Actions Packages Projects Releases Wiki Activity

ENH: streamLine: added preliminary support for surface following

Browse Source
This commit is contained in:
mattijs
2011-12-22 11:46:14 +00:00
parent 06699987a8
commit b752c60cd1
4 changed files with 336 additions and 21 deletions
Download Patch File Download Diff File Expand all files Collapse all files

78
src/postProcessing/functionObjects/field/streamLine/streamLineParticle.C
View File

@ -43,7 +43,7 @@ Foam::scalar Foam::streamLineParticle::calcSubCycleDeltaT
const vector& U
) const
{
streamLineParticle testParticle(*this);
particle testParticle(*this);
bool oldKeepParticle = td.keepParticle;
bool oldSwitchProcessor = td.switchProcessor;
@ -59,7 +59,8 @@ Foam::vector Foam::streamLineParticle::interpolateFields
(
const trackingData& td,
const point& position,
const label cellI
const label cellI,
const label faceI
)
{
if (cellI == -1)
@ -76,7 +77,8 @@ Foam::vector Foam::streamLineParticle::interpolateFields
td.vsInterp_[scalarI].interpolate
(
position,
cellI
cellI,
faceI
)
);
}
@ -89,7 +91,8 @@ Foam::vector Foam::streamLineParticle::interpolateFields
td.vvInterp_[vectorI].interpolate
(
position,
cellI
cellI,
faceI
)
);
}
@ -201,13 +204,24 @@ bool Foam::streamLineParticle::move
// Store current position and sampled velocity.
sampledPositions_.append(position());
vector U = interpolateFields(td, position(), cell());
vector U = interpolateFields(td, position(), cell(), face());
if (!td.trackForward_)
{
U = -U;
}
if (td.followSurface_)
{
//- Simple: remove wall-normal component. Should keep particle
// at same height. Does not work well on warped faces.
const vector& n = td.patchNormals_[tetFaceI_];
if (n != vector::zero)
{
U -= (U&n)*n;
}
}
scalar magU = mag(U);
if (magU < SMALL)
@ -219,7 +233,13 @@ bool Foam::streamLineParticle::move
U /= magU;
if (subIter == 0 && td.nSubCycle_ > 1)
if (td.trackLength_ < GREAT)
{
dt = td.trackLength_;
//Pout<< " subiteration " << subIter
// << " : fixed length: updated dt:" << dt << endl;
}
else if (subIter == 0 && td.nSubCycle_ > 1)
{
// Adapt dt to cross cell in a few steps
dt = calcSubCycleDeltaT(td, dt, U);
@ -264,7 +284,8 @@ bool Foam::streamLineParticle::move
if (debug)
{
Pout<< "streamLineParticle : Removing stagnant particle:"
<< p << " sampled positions:" << sampledPositions_.size()
<< p.position()
<< " sampled positions:" << sampledPositions_.size()
<< endl;
}
td.keepParticle = false;
@ -273,12 +294,13 @@ bool Foam::streamLineParticle::move
{
// Normal exit. Store last position and fields
sampledPositions_.append(position());
interpolateFields(td, position(), cell());
interpolateFields(td, position(), cell(), face());
if (debug)
{
Pout<< "streamLineParticle : Removing particle:"
<< p << " sampled positions:" << sampledPositions_.size()
<< p.position()
<< " sampled positions:" << sampledPositions_.size()
<< endl;
}
}
@ -374,8 +396,42 @@ void Foam::streamLineParticle::hitWallPatch
const tetIndices&
)
{
// Remove particle
td.keepParticle = false;
if (td.followSurface_)
{
// Push slightly in. Since we're pushing to tet centre we should still
// be in the same tet.
tetPointRef tet = currentTet();
const point oldPosition(position());
position() += trackingCorrectionTol*(tet.centre() - position());
if (debug)
{
label patchID = patch(face());
Pout<< "hitWallPatch : on wall "
<< mesh().boundaryMesh()[patchID].name()
<< " moved from " << oldPosition
<< " to " << position()
<< " due to centre " << tet.centre() << endl;
}
// Check that still in tet (should always be the case
if (debug && !tet.inside(position()))
{
FatalErrorIn("streamLineParticle::hitWallPatch()")
<< "Pushing particle " << *this
<< " away from wall " << wpp.name()
<< " moved it outside of tet."
<< exit(FatalError);
}
}
else
{
// Remove particle
td.keepParticle = false;
}
}