| piprus |
April 27, 2021 07:53 |
fluent3DMeshToFoam with ignoreFaceGroups
Hi,
Yesterday, I faced a problem while using fluent3DMeshToFoam conversion tool. I believe the problem comes from its size, i.e. it's made of almost 120M pure hexahedral elements.
Just for clarity sake it's very simple 3D domain. It's a smooth pipe where a short inner cylidrical blunt body is coaxially located. What's important here is that, I have one inlet, one outlet and two walls, i.e. "wall_pls" - the one that creates the channel/pipe and the other one - "wall_plc" - that covers hollow space (the obstacle shape).
When I run fluent3DMeshToFoam, I get an error:
Code:
$ fluent3DMeshToFoam LES_r05_19.msh
/*---------------------------------------------------------------------------*\
| ========= | |
| \\ / F ield | OpenFOAM: The Open Source CFD Toolbox |
| \\ / O peration | Version: 5.0 |
| \\ / A nd | Web: www.OpenFOAM.org |
| \\/ M anipulation | |
\*---------------------------------------------------------------------------*/
Build : 5.0
Exec : fluent3DMeshToFoam LES_r05_19.msh
Date : Apr 27 2021
Time : 00:24:00
Host : "workstation001"
PID : 294780
I/O : uncollated
Case : /mnt/home/pprusinski/OF_cases/Conversion
nProcs : 1
fileModificationChecking : Monitoring run-time modified files using timeStampMaster (fileModificationSkew 10)
allowSystemOperations : Allowing user-supplied system call operations
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
Create time
Overriding OptimisationSwitches according to controlDict
fileModificationSkew 0;
maxMasterFileBufferSize 1e+09;
maxThreadFileBufferSize 1e+09;
Dimension of grid: 3
Number of points: 119124502
Number of faces: 355043200
Number of cells: 117960000
PointGroup: 2 start: 0 end: 116798097. Reading points...done.
PointGroup: 3 start: 116798098 end: 119124501. Reading points...done.
FaceGroup: 1 start: 0 end: 352716799. Reading uniform faces...done.
FaceGroup: 5 start: 352716800 end: 352777999. Reading uniform faces...done.
FaceGroup: 6 start: 352778000 end: 352839199. Reading uniform faces...done.
FaceGroup: 7 start: 352839200 end: 354159199. Reading uniform faces...done.
FaceGroup: 8 start: 354159200 end: 355043199. Reading uniform faces...done.
CellGroup: 4 start: 0 end: 117959999 type: 1
Zone: 1 name: interior-domain type: interior. Reading zone data...done.
Zone: 4 name: domain type: fluid. Reading zone data...done.
Zone: 5 name: inlet type: velocity-inlet. Reading zone data...done.
Zone: 6 name: outlet type: pressure-outlet. Reading zone data...done.
Zone: 7 name: wall_pls type: wall. Reading zone data...done.
Zone: 8 name: wall_plc type: wall. Reading zone data...done.
FINISHED LEXING
Creating patch 0 for zone: 5 name: inlet type: velocity-inlet
Creating patch 1 for zone: 6 name: outlet type: pressure-outlet
Creating patch 2 for zone: 7 name: wall_pls type: wall
Creating patch 3 for zone: 8 name: wall_plc type: wall
Creating cellZone 0 name: domain type: fluid
Creating faceZone 0 name: interior-domain type: interior
faceZone from Fluent indices: 0 to: 352716799 type: interior
patch 0 from Fluent indices: 352716800 to: 352777999 type: velocity-inlet
patch 1 from Fluent indices: 352778000 to: 352839199 type: pressure-outlet
patch 2 from Fluent indices: 352839200 to: 354159199 type: wall
patch 3 from Fluent indices: 354159200 to: 355043199 type: wall
new cannot satisfy memory request.
This does not necessarily mean you have run out of virtual memory.
It could be due to a stack violation caused by e.g. bad use of pointers or an out of date shared library
Aborted (core dumped)
As the memory is not a problem for sure, i.e. I did measure RAM consumption while performing procedure (BTW. my workstation has more than 750 GB RAM). I tried to use walk-around given here https://bugs.openfoam.org/view.php?id=1465, i.e. applying flag -ignoreFaceGroups. But again no luck:
Code:
$ fluent3DMeshToFoam -ignoreFaceGroups wall_plc LES_r05_19.msh
/*---------------------------------------------------------------------------*\
| ========= | |
| \\ / F ield | OpenFOAM: The Open Source CFD Toolbox |
| \\ / O peration | Version: 5.0 |
| \\ / A nd | Web: www.OpenFOAM.org |
| \\/ M anipulation | |
\*---------------------------------------------------------------------------*/
Build : 5.0
Exec : fluent3DMeshToFoam -ignoreFaceGroups wall_plc LES_r05_19.msh
Date : Apr 27 2021
Time : 12:19:15
Host : "workstation001"
PID : 305178
I/O : uncollated
Case : /mnt/home/pprusinski/OF_cases/Conversion
nProcs : 1
fileModificationChecking : Monitoring run-time modified files using timeStampMaster (fileModificationSkew 10)
allowSystemOperations : Allowing user-supplied system call operations
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
--> FOAM FATAL IO ERROR:
incorrect first token, expected <int> or '(', found on line 0 the word 'wall_plc'
file: IStringStream.sourceFile at line 0.
From function Foam::Istream& Foam::operator>>(Foam::Istream&, Foam::HashTable<T, Key, Hash>&) [with T = Foam::nil; Key = Foam::word; Hash = Foam::string::hash]
in file /mnt/opt/apps/slc6/openfoam/5.0-x86_64-gcc483/OpenFOAM-5.0/src/OpenFOAM/lnInclude/HashTableIO.C at line 203.
FOAM exiting
Does anybody know what am I doing wrong? What's wrong with this syntax:
fluent3DMeshToFoam -ignoreFaceGroups wall_plc LES_r05_19.msh
---------------------
Some extra mesh details based on statistics generated in Fluent:
Code:
117960000 hexahedral cells, zone 4, binary.
117960000 cell partition ids, zone 4, 2000 partitions, binary.
352716800 quadrilateral interior faces, zone 1, binary.
61200 quadrilateral velocity-inlet faces, zone 5, binary.
61200 quadrilateral pressure-outlet faces, zone 6, binary.
1320000 quadrilateral wall faces, zone 7, binary.
884000 quadrilateral wall faces, zone 8, binary.
119124502 nodes, binary.
119124502 node flags, binary.
*binary, as the Fluent setup is based on a compressed files... the setup for OF is made in ASCII mode yet. |
