[jwh107]

Hello, recently I see the duct fan tutorials in youtube https://youtu.be/qTYAr8jgViM

I found it is very interesting and I want to use the same setting with tutorials but different mesh and geometry

I used terminal command gmsh to create mesh and gmshToFoam to convert it into openFoam format.

When I was doing gmshToFoam. I faced the first error. I attached txt file(Error when gmshToFoam.txt) that is copy of error text
Error when gmshToFoam.txt

But I think it is a minor problem so, I continue anyway.

I modify boundary file in my case and execute createBaffles command.

I faced long error. I attached this error.(Error when createBaffles.txt)
Error when createBaffles.txt

http://www.cfd-online.com/Forums/ope...ot-planar.html

I search about this kind of error and I think those error messages are not very serious. I think I can ignore and proceed to computation.

So, I execute pimpleFoam command anyway. At first my terminal showed long error message just like the one that when I execute createBaffles command.

But it run about a few seconds and crashed.
Error when pimpleFoam.txt

I don't know how to fix this error

The original tutorial case file link is below

https://github.com/lordvon/OpenFOAM_...ster/DuctedFan

This is my whole case file.

https://drive.google.com/file/d/0B2L...ew?usp=sharing

I really need your help and I really appreciate your help.

Thank you

Ps. I am using Gmsh 12.12.0, openFoam 4.0 and ubuntu 14.04 LTS

[jwh107]

I did some mesh check with checkMesh command.

I think the mesh was a problem.

But, I don't think it is the only one.

Anyway, I will keep trying.

Thank You!

--> FOAM Warning :
From function virtual void Foam::wedgePolyPatch::calcGeometry(Foam::PstreamBu ffers&)
in file meshes/polyMesh/polyPatches/constraint/wedge/wedgePolyPatch.C at line 69
Wedge patch 'wedge1' is not planar.
At local face at (14.3435 -1646.04 0.626253) the normal (-0.0436194 -3.09103e-17 0.999048) differs from the average normal (-0.0436195 -4.45833e-08 0.999048) by 2.40193e-14
Either correct the patch or split it into planar parts
--> FOAM Warning :
From function virtual void Foam::wedgePolyPatch::calcGeometry(Foam::PstreamBu ffers&)
in file meshes/polyMesh/polyPatches/constraint/wedge/wedgePolyPatch.C at line 69
Wedge patch 'wedge1' is not planar.
At local face at (10.6613 -277.657 0.465485) the normal (-0.0436194 -1.58485e-17 0.999048) differs from the average normal (-0.0436195 -4.45833e-08 0.999048) by 2.40193e-14
Either correct the patch or split it into planar parts
--> FOAM Warning :
From function virtual void Foam::wedgePolyPatch::calcGeometry(Foam::PstreamBu ffers&)
in file meshes/polyMesh/polyPatches/constraint/wedge/wedgePolyPatch.C at line 69
Wedge patch 'wedge1' is not planar.
At local face at (2.34513 -243.263 0.102391) the normal (-0.0436194 -1.28862e-17 0.999048) differs from the average normal (-0.0436195 -4.45833e-08 0.999048) by 2.40193e-14
Either correct the patch or split it into planar parts
--> FOAM Warning :
From function virtual void Foam::wedgePolyPatch::calcGeometry(Foam::PstreamBu ffers&)
in file meshes/polyMesh/polyPatches/constraint/wedge/wedgePolyPatch.C at line 69
Wedge patch 'wedge1' is not planar.
At local face at (7.14033 -271.508 0.311754) the normal (-0.0436194 -5.09843e-18 0.999048) differs from the average normal (-0.0436195 -4.45833e-08 0.999048) by 2.40193e-14
Either correct the patch or split it into planar parts
--> FOAM Warning :
From function virtual void Foam::wedgePolyPatch::calcGeometry(Foam::PstreamBu ffers&)
in file meshes/polyMesh/polyPatches/constraint/wedge/wedgePolyPatch.C at line 69
Wedge patch 'wedge1' is not planar.
At local face at (4.05214 -268.027 0.17692) the normal (-0.0436194 -1.11552e-17 0.999048) differs from the average normal (-0.0436195 -4.45833e-08 0.999048) by 2.40193e-14
Either correct the patch or split it into planar parts
Time = 0

Mesh stats
points: 24833
internal points: 0
faces: 85570
internal faces: 36272
cells: 24388
faces per cell: 4.99598
boundary patches: 8
point zones: 0
face zones: 2
cell zones: 1

Overall number of cells of each type:
hexahedra: 0
prisms: 24165
wedges: 0
pyramids: 124
tet wedges: 0
tetrahedra: 98
polyhedra: 1
Breakdown of polyhedra by number of faces:
faces number of cells
5 1

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
wedge0 24388 12466 ok (non-closed singly connected)
baffle 38 77 ok (non-closed singly connected)
baffleother 38 77 ok (non-closed singly connected)
inlet 49 99 ok (non-closed singly connected)
outlet 49 99 ok (non-closed singly connected)
wedge1 24388 12466 ok (non-closed singly connected)
tunnel 49 100 ok (non-closed singly connected)
duct 299 598 ok (non-closed singly connected)

Checking geometry...
Overall domain bounding box (0 -2000 -87.2388) (1998.1 1500 87.2388)
Mesh has 2 geometric (non-empty/wedge) directions (1 1 0)
Mesh has 3 solution (non-empty) directions (1 1 1)
Wedge wedge0 with angle 2.49995 degrees
***Wedge patch wedge0 not planar. Point (0 679.463 0) is not in patch plane by 7.54793e-05 metre.
***Boundary openness (-6.441e-06 -1.91846e-06 -3.06122e-15) possible hole in boundary description.
***Open cells found, max cell openness: 1, number of open cells 1
<<Writing 1 non closed cells to set nonClosedCells
Minimum face area = 6.29552e-14. Maximum face area = 15955.1. Face area magnitudes OK.
Min volume = 1.08266e-12. Max volume = 470392. Total volume = 6.09304e+08. Cell volumes OK.
Mesh non-orthogonality Max: 68.7577 average: 7.51407
Non-orthogonality check OK.
***Error in face pyramids: 3 faces are incorrectly oriented.
<<Writing 3 faces with incorrect orientation to set wrongOrientedFaces
Max skewness = 1.55177 OK.
Coupled point location match (average 0) OK.

Failed 4 mesh checks.

End

[wouter]

hello jwh107
I had simular problems and I could solve it by changing in controlDict the default writePrecision of 6 to 10 or higher.
hope this helps
Wouter

[jwh107]

Thanks for the reply.
The thing you told me is one of the way to solve that proplem.
I tried variety of solution as many as I can find on the internet.
Now, it worked and I don't have to saw that error again.
It is some kind of giving helpful information to everybody.
I will post variety of solution that I found on the internet.
When I have some free time to spare and get things orgarnized.

Thanks again.