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[Technical] Uncovered faces found ????

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Old   July 3, 2009, 13:08
Default Uncovered faces found ????
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Steve Hansel
Join Date: Jun 2009
Location: Colorado, USA
Posts: 112
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I'm using OpenFOAM-1.5-dev Ubuntu 9.04 64 bit.

I'm attempting to set up a rotating mesh, with a cylinder inside a block with a hole, just a little larger than the cylinder. (the cylinder is about 2M across and the gap is 0.5mm) See picture at end.

When I run it, I get this error:
====================
From function void GGIInterpolation<MasterPatch, SlavePatch>::rescaleWeightingFactors() const
in file /storage/software/OpenFOAM/OpenFOAM-1.5-dev/src/OpenFOAM/lnInclude/GGIInterpolationWeights.C at line 533
Uncovered faces found. On master: 98 on slave: 504
Largest slave weighting factor correction : 0.4458582 average: 0.04798944
Largest master weighting factor correction: 1 average: 0.2857143

Selecting incompressible transport model Newtonian
Selecting RAS turbulence model kEpsilon
kEpsilonCoeffs
{
Cmu 0.09;
C1 1.44;
C2 1.92;
alphaEps 0.76923;
}

Reading field rAU if present


Starting time loop

Courant Number mean: 0.002633346 max: 0.02407465 velocity magnitude: 1.107188
Time = 2.001

Segmentation fault
==============
What is an uncovered face? Does it have to do with the two meshes not lining up perfectly?

I tried it with several different programs:
turbDyMFoam - error and crash
icoDyMFoam - error and crash
IcoFoam error message, doesn't crash, good results.
PotentialFoam error message, no crash, strange results. (velocity changes through ggi interface, like light through a lens.)
traceback on the crash is:
===================
Program received signal SIGSEGV, Segmentation fault.
[Switching to Thread 0x7f7dd8b7d700 (LWP 6293)]
0x00007f7dd8768124 in Foam::mixerGgiFvMesh::calcMovingMasks () from /storage/software/OpenFOAM/OpenFOAM-1.5-dev/lib/linux64GccDPOpt/libdynamicFvMesh.so
Current language: auto; currently asm
(gdb) where
#0 0x00007f7dd8768124 in Foam::mixerGgiFvMesh::calcMovingMasks () from /storage/software/OpenFOAM/OpenFOAM-1.5-dev/lib/linux64GccDPOpt/libdynamicFvMesh.so
#1 0x00007f7dd87690ad in Foam::mixerGgiFvMesh::movingPointsMask () from /storage/software/OpenFOAM/OpenFOAM-1.5-dev/lib/linux64GccDPOpt/libdynamicFvMesh.so
#2 0x00007f7dd87690eb in Foam::mixerGgiFvMesh::update () from /storage/software/OpenFOAM/OpenFOAM-1.5-dev/lib/linux64GccDPOpt/libdynamicFvMesh.so
#3 0x0000000000416047 in main ()
(gdb) list
1 /build/buildd/glibc-2.9/build-tree/amd64-libc/csu/crtn.S: No such file or directory.
in /build/buildd/glibc-2.9/build-tree/amd64-libc/csu/crtn.S
(gdb) Quit
====================

Thanks

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