[karelvdb]

Hello everyone,

I'm running a tutorial case from pointwise to model a 2D VAWT using the pimpleFoam solver.
The tutorial also includes a glyph to make meshes with other then the default specifications.
The default case runs just fine.
If I edit the case so I have 2 blades instead of 3, and with other dimensions it also runs fine.

If I make a new case where I make radius of the rotating area smaller my checkMesh result the following error:

Mesh has 1 geometric (non-empty/wedge) directions (0 1 0)
Mesh has 1 solution (non-empty) directions (0 1 0)
***Number of edges not aligned with or perpendicular to non-empty directions: 206910

Does anyone know what may cause this?


Bellow you can find a full version of the checkMesh
/*---------------------------------------------------------------------------*\
| ========= | |
| \\ / F ield | OpenFOAM: The Open Source CFD Toolbox |
| \\ / O peration | Version: v1812 |
| \\ / A nd | Web: www.OpenFOAM.com |
| \\/ M anipulation | |
\*---------------------------------------------------------------------------*/
Build : v1812 OPENFOAM=1812
Arch : "LSB;label=32;scalar=64"
Exec : checkMesh
Date : May 09 2019
Time : 10:07:20
Host : DESKTOP-42PQLPJ
PID : 517
I/O : uncollated
Case : /mnt/c/VAWT/OpenFOAM-2D-VAWT-default
nProcs : 1
trapFpe: Floating point exception trapping enabled (FOAM_SIGFPE).
fileModificationChecking : Monitoring run-time modified files using timeStampMaster (fileModificationSkew 10)
allowSystemOperations : Allowing user-supplied system call operations

// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
Create time

--> FOAM Warning :
From function void* Foam::dlOpen(const Foam::fileName&, bool)
in file POSIX.C at line 1601
dlopen error : libincompressibleTurbulenceModel.so: cannot open shared object file: No such file or directory
--> FOAM Warning :
From function bool Foam::dlLibraryTable:pen(const Foam::fileName&, bool)
in file db/dynamicLibrary/dlLibraryTable/dlLibraryTable.C at line 109
could not load "libincompressibleTurbulenceModel.so"
--> FOAM Warning :
From function void* Foam::dlOpen(const Foam::fileName&, bool)
in file POSIX.C at line 1601
dlopen error : libincompressibleRASModels.so: cannot open shared object file: No such file or directory
--> FOAM Warning :
From function bool Foam::dlLibraryTable:pen(const Foam::fileName&, bool)
in file db/dynamicLibrary/dlLibraryTable/dlLibraryTable.C at line 109
could not load "libincompressibleRASModels.so"
Create mesh for time = 0

Time = 0

Mesh stats
points: 78192
internal points: 0
faces: 232921
internal faces: 103047
cells: 64608
faces per cell: 5.2001
boundary patches: 5
point zones: 0
face zones: 0
cell zones: 2

Overall number of cells of each type:
hexahedra: 12928
prisms: 51680
wedges: 0
pyramids: 0
tet wedges: 0
tetrahedra: 0
polyhedra: 0

Checking topology...
Boundary definition OK.
***Total number of faces on empty patches is not divisible by the number of cells in the mesh. Hence this mesh is not 1D or 2D.
Cell to face addressing OK.
Point usage OK.
Upper triangular ordering OK.
Face vertices OK.
*Number of regions: 2
The mesh has multiple regions which are not connected by any face.
<<Writing region information to "0/cellToRegion"
<<Writing region 0 with 61936 cells to cellSet region0
<<Writing region 1 with 2672 cells to cellSet region1

Checking patch topology for multiply connected surfaces...
Patch Faces Points Surface topology
blades 396 796 ok (non-closed singly connected)
ext_interface 78 156 ok (non-closed singly connected)
farfield 98 196 ok (non-closed singly connected)
int_interface 78 156 ok (non-closed singly connected)
sides 129224 78192 ok (non-closed singly connected)

Checking faceZone topology for multiply connected surfaces...
No faceZones found.

Checking basic cellZone addressing...
CellZone Cells Points Volume BoundingBox
rotating-cells 61936 75344 4.90282 (-1.25 -1.24899 0) (1.25 1.24899 1)
stationary-cells 2672 2848 14.7181 (-2.49872 -2.5 0) (2.49872 2.5 1)

Checking geometry...
Overall domain bounding box (-2.49872 -2.5 0) (2.49872 2.5 1)
Mesh has 1 geometric (non-empty/wedge) directions (0 1 0)
Mesh has 1 solution (non-empty) directions (0 1 0)
***Number of edges not aligned with or perpendicular to non-empty directions: 206910
<<Writing 78188 points on non-aligned edges to set nonAlignedEdges
Boundary openness (-6.26725e-18 -4.70044e-18 1.63379e-15) OK.
Max cell openness = 1.8829e-15 OK.
Max aspect ratio = 1 OK.
Minimum face area = 1.984e-10. Maximum face area = 0.214695. Face area magnitudes OK.
Min volume = 1.984e-10. Max volume = 0.0149432. Total volume = 19.6209. Cell volumes OK.
Mesh non-orthogonality Max: 83.0354 average: 5.17257
*Number of severely non-orthogonal (> 70 degrees) faces: 52.
Non-orthogonality check OK.
<<Writing 52 non-orthogonal faces to set nonOrthoFaces
Face pyramids OK.
Max skewness = 1.93179 OK.
Coupled point location match (average 0) OK.

Failed 1 mesh checks.

End