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BUG: particle: locate can get stuck on cell centre. Fixes #935.

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mattijs
2018-07-12 11:31:27 +01:00
parent d82deea8e5
commit f09d985207
1 changed files with 7 additions and 3 deletions
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10
src/lagrangian/basic/particle/particle.C
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@ -424,14 +424,18 @@ void Foam::particle::locate
<< exit(FatalError);
}
// Put the particle at the cell centre and in a random tet
coordinates_ = barycentric(1, 0, 0, 0);
// Put the particle at (almost) the cell centre and in a random tet.
// Note perturbing the cell centre to make sure we find at least one
// tet containing it. With start point exactly at the cell centre very
// occasionally it would not get found in any of the tets
coordinates_ = barycentric(1-3*SMALL, SMALL, SMALL, SMALL);
tetFacei_ = mesh_.cells()[celli_][0];
tetPti_ = 1;
facei_ = -1;
// Track to the injection point
track(position - mesh_.cellCentres()[celli_], 0);
track(position - this->position(), 0);
if (!onFace())
{
return;