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[snappyHexMesh] cell does not seem to have 8 points

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Old   February 22, 2024, 04:11
Default cell does not seem to have 8 points
  #1
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Gianluca
Join Date: Nov 2023
Posts: 1
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GW99 is on a distinguished road
i'm trying to mesh a valve with snappy but everytime the result is this:


Code:
--> FOAM FATAL ERROR: 
cell 236 of level 1 does not seem to have 8 points of equal or lower level
cellPoints:
11
(
21898
32807
32808
6957
6958
6960
6961
10162
10163
6964
36423
)

pointLevels:
11
(
2
2
2
0
1
1
1
1
1
1
2
)



    From function Foam::labelListList Foam::hexRef8::setRefinement(const labelList&, Foam::polyTopoChange&)
    in file polyTopoChange/polyTopoChange/hexRef8/hexRef8.C at line 3678.

FOAM aborting

#0  Foam::error::printStack(Foam::Ostream&) at ??:?
#1  Foam::error::abort() at ??:?
#2  Foam::hexRef8::setRefinement(Foam::List<int> const&, Foam::polyTopoChange&) at ??:?
#3  Foam::meshRefinement::refine(Foam::List<int> const&) at ??:?
#4  Foam::meshRefinement::refineAndBalance(Foam::string const&, Foam::decompositionMethod&, Foam::fvMeshDistribute&, Foam::List<int> const&, double) at ??:?
#5  Foam::snappyRefineDriver::shellRefine(Foam::refinementParameters const&, int) at ??:?
#6  Foam::snappyRefineDriver::doRefine(Foam::dictionary const&, Foam::refinementParameters const&, Foam::snapParameters const&, bool, Foam::dictionary const&) at ??:?
#7  ? in "/opt/openfoam11/platforms/linux64GccDPInt32Opt/bin/snappyHexMesh"
#8  ? in "/lib/x86_64-linux-gnu/libc.so.6"
#9  __libc_start_main in "/lib/x86_64-linux-gnu/libc.so.6"
#10  ? in "/opt/openfoam11/platforms/linux64GccDPInt32Opt/bin/snappyHexMesh"
Aborted (core dumped)
The resulting mesh still works and checkMesh says that mesh is OK but i don't understand the meaning of that error.

This are my code i've tryed to change every single parameter but nothing changes the result.
if someone can help me i would be very pleased because i'm going crazy


These are snappydict and qualitydict Meshing.zip
GW99 is offline   Reply With Quote

Old   March 25, 2024, 01:07
Default BlockMeshDict might be wrong
  #2
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Amirreza
Join Date: Mar 2020
Posts: 17
Rep Power: 6
arezayan87 is on a distinguished road
Quote:
Originally Posted by GW99 View Post
i'm trying to mesh a valve with snappy but everytime the result is this:


Code:
--> FOAM FATAL ERROR: 
cell 236 of level 1 does not seem to have 8 points of equal or lower level
cellPoints:
11
(
21898
32807
32808
6957
6958
6960
6961
10162
10163
6964
36423
)

pointLevels:
11
(
2
2
2
0
1
1
1
1
1
1
2
)



    From function Foam::labelListList Foam::hexRef8::setRefinement(const labelList&, Foam::polyTopoChange&)
    in file polyTopoChange/polyTopoChange/hexRef8/hexRef8.C at line 3678.

FOAM aborting

#0  Foam::error::printStack(Foam::Ostream&) at ??:?
#1  Foam::error::abort() at ??:?
#2  Foam::hexRef8::setRefinement(Foam::List<int> const&, Foam::polyTopoChange&) at ??:?
#3  Foam::meshRefinement::refine(Foam::List<int> const&) at ??:?
#4  Foam::meshRefinement::refineAndBalance(Foam::string const&, Foam::decompositionMethod&, Foam::fvMeshDistribute&, Foam::List<int> const&, double) at ??:?
#5  Foam::snappyRefineDriver::shellRefine(Foam::refinementParameters const&, int) at ??:?
#6  Foam::snappyRefineDriver::doRefine(Foam::dictionary const&, Foam::refinementParameters const&, Foam::snapParameters const&, bool, Foam::dictionary const&) at ??:?
#7  ? in "/opt/openfoam11/platforms/linux64GccDPInt32Opt/bin/snappyHexMesh"
#8  ? in "/lib/x86_64-linux-gnu/libc.so.6"
#9  __libc_start_main in "/lib/x86_64-linux-gnu/libc.so.6"
#10  ? in "/opt/openfoam11/platforms/linux64GccDPInt32Opt/bin/snappyHexMesh"
Aborted (core dumped)
The resulting mesh still works and checkMesh says that mesh is OK but i don't understand the meaning of that error.

This are my code i've tryed to change every single parameter but nothing changes the result.
if someone can help me i would be very pleased because i'm going crazy


These are snappydict and qualitydict Attachment 98572


Dear Gianluca
I think the problem is with your background mesh or the stl file, attach the stl and blockMeshdict. there might be some disorder in blocks arrangement.
arezayan87 is offline   Reply With Quote

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