| rupole1185 |
August 28, 2018 07:54 |
CFD analysis not converging
2 Attachment(s)
Hello everyone,
I have a bit troubles with OpenFOAM and a mesh I made using SNAPPY.
Basically I don't get it to converge!!
I attach here the checkMesh result:
Code:
/*---------------------------------------------------------------------------*\
| ========= | |
| \\ / F ield | OpenFOAM: The Open Source CFD Toolbox |
| \\ / O peration | Version: 5.x |
| \\ / A nd | Web: www.OpenFOAM.org |
| \\/ M anipulation | |
\*---------------------------------------------------------------------------*/
Build : 5.x-197d9d3bf20a
Exec : checkMesh
Date : Aug 28 2018
Time : 13:46:13
Host : "rupole1185-desktop"
PID : 5212
I/O : uncollated
Case : /home/rupole1185/PROJECT/opencases/SIMULAZIONI/ENG-35/MONOBLOCCO-4_5-STALLA
nProcs : 1
sigFpe : Enabling floating point exception trapping (FOAM_SIGFPE).
fileModificationChecking : Monitoring run-time modified files using timeStampMaster (fileModificationSkew 10)
allowSystemOperations : Allowing user-supplied system call operations
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
Create time
Create polyMesh for time = 0
Time = 0
Mesh stats
points: 8472097
faces: 24516039
internal faces: 24338367
cells: 8025096
faces per cell: 6.0877
boundary patches: 3
point zones: 0
face zones: 1
cell zones: 1
Overall number of cells of each type:
hexahedra: 7790546
prisms: 5053
wedges: 0
pyramids: 0
tet wedges: 53
tetrahedra: 2
polyhedra: 229442
Breakdown of polyhedra by number of faces:
faces number of cells
4 2185
5 5133
6 65868
7 184
8 68
9 96772
10 6
11 2
12 35489
13 1
14 5
15 23301
18 428
Checking topology...
Boundary definition OK.
Cell to face addressing OK.
Point usage OK.
Upper triangular ordering OK.
Face vertices OK.
Number of regions: 1 (OK).
Checking patch topology for multiply connected surfaces...
Patch Faces Points Surface topology
wall 20322 21096 ok (non-closed singly connected)
impeller 139105 144658 ok (closed singly connected)
simmetry 18245 18883 ok (non-closed singly connected)
Checking geometry...
Overall domain bounding box (-5.00012 -5.75081 -4.15041) (5 5.75081 5.85)
Mesh has 3 geometric (non-empty/wedge) directions (1 1 1)
Mesh has 3 solution (non-empty) directions (1 1 1)
Boundary openness (-5.36511e-16 -1.45746e-16 -2.70403e-17) OK.
Max cell openness = 4.33313e-16 OK.
Max aspect ratio = 7.73036 OK.
Minimum face area = 3.36406e-07. Maximum face area = 0.0604344. Face area magnitudes OK.
Min volume = 2.5461e-08. Max volume = 0.0103205. Total volume = 879.703. Cell volumes OK.
Mesh non-orthogonality Max: 59.9991 average: 5.3405
Non-orthogonality check OK.
Face pyramids OK.
***Max skewness = 9.32017, 11 highly skew faces detected which may impair the quality of the results
<<Writing 11 skew faces to set skewFaces
Coupled point location match (average 0) OK.
Failed 1 mesh checks.
End
And I also attach the info about the inlet and system directories |
