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[blockMesh] blockMesh multiple merging on same hex |
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December 13, 2018, 17:14 |
blockMesh multiple merging on same hex
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New Member
Join Date: Oct 2018
Posts: 19
Rep Power: 7 |
Hi,
I'm working on mesh which should be merged from four different sub-parts and I'm using blockMesh to do it. I'm on step where I have four blocks (see numbers on the enclosed image). But when I try to merge four boundaries (four dotted lines) only first two merges work fine and on the third merge there is always error like this: Code:
Creating merge patch pairs Adding point and face zones Creating attachPolyTopoChanger --> FOAM FATAL ERROR: Face 164393 reduced to less than 3 points. Topological/cutting error A. Old face: 2(74389 74570) new face: 2(74389 74570) From function void Foam::slidingInterface::coupleInterface(Foam::polyTopoChange&) const in file slidingInterface/coupleSlidingInterface.C at line 1461. FOAM aborting #0 Foam::error::printStack(Foam::Ostream&) at ??:? #1 Foam::error::abort() at ??:? #2 Foam::slidingInterface::coupleInterface(Foam::polyTopoChange&) const at ??:? #3 Foam::polyTopoChanger::topoChangeRequest() const at ??:? #4 Foam::polyTopoChanger::changeMesh(bool, bool, bool, bool) at ??:? #5 Foam::attachPolyTopoChanger::attach(bool) at ??:? #6 ? in "/usr/bin/blockMesh" #7 __libc_start_main in "/lib/x86_64-linux-gnu/libc.so.6" #8 ? in "/usr/bin/blockMesh" Aborted (core dumped) This happens always on the third merge even if I change the order. So I guess first two are changing something on the geometry and makes next two meshes impossible. I'm using mergePatchPairs because I want to have different mesh sizes on merge faces. Does anyone have any idea what should I do to succeed in merging these four patches? Thanks, Krzysztof |
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