[cesaranjo]

Good morning everybody,

I am doing a study of CFD in the nasal cavity.

For this:
1. I have a CT of the sinuses and use Horos to create the .stl.
2. Before viewing properly in Paraview I had to study and resort to the installation of OpenFoam which implies additional installation of Docker Desktop and knowledge of terminal in C ++.

I have resorted to a summary and after multiple attempts I think I managed to create the mesh for a CT scan of the sinuses, which is attached.

Unfortunately I got stuck in the last step of that summary when trying to run: <pirun -np 8 simpleFoam -parallel>

"[0] -> FOAM FATAL ERROR:
[0] Continuity error cannot be removed by adjusting the outflow.
Please check the velocity boundary conditions and / or run potentialFoam to initialise the outflow.
Total flux: 57998.77
Specified mass inflow: 1.290576
Specified mass outflow: 0.3704303
Adjustable mass outflow: 0
[0]
[0]
[0] From bool Foam :: adjustPhi (Foam :: surfaceScalarField &, const volVectorField &, Foam :: volScalarField &)
[0] in file cfdTools / general / adjustPhi / adjustPhi.C at line 110.
[0]
FOAM parallel run exiting "

Assuming that the problem is in the U file, I had to try several options, however, either repeat the same error or provide another one (for example, by using the code from the work - OpenNOSE: an open-source procedure for the simulation of nasal aerodynamics):

"[1] [6] ## 0 0Foam :: error :: printStack (Foam :: Ostream &) Foam :: error :: printStack (Foam :: Ostream &) [5] # 0 Foam :: error :: printStack (Foam :: Ostream &) [4] [2] # 0 Foam :: error :: printStack (Foam :: Ostream &) # 0 Foam :: error :: printStack (Foam :: Ostream &) [3] # 0 Foam :: error: : printStack (Foam :: Ostream &) [7] # 0 Foam :: error :: printStack (Foam :: Ostream &) [0] # 0 Foam :: error :: printStack (Foam :: Ostream &) at ??:?
[5] # 1 Foam :: sigFpe :: sigHandler (int) to ??:?
until ??:?
[1] # 1 Foam :: sigFpe :: sigHandler (int) [0] # 1 Foam :: sigFpe :: sigHandler (int) to ??:?
[2] # 1 Foam :: sigFpe :: sigHandler (int) to ??:?
[3] # 1 Foam :: sigFpe :: sigHandler (int) to ??:?
[7] # 1 Foam :: sigFpe :: sigHandler (int) to ??:? "

My doubts:
a) How can I overcome this problem with the U file?

Best Regards
César Anjo


PS: I have installed XQuartz but when trying to run in the terminal: <paraFoam> it gives me the following error:

"Created temporary 'paraview_xviii.OpenFOAM'
open QStandardPaths: XDG_RUNTIME_DIR not set, defaulting to '/ tmp / runtime-ofuser'
QXcbConnection: Could not connect to display "

I have already researched and I cannot find a way to correct this error as well.

[xukai]

Hello, I have met the same problem. Have you solved it? I want to discuss it together

[cesaranjo]

Good morning,

I don't have the complete answer, but you came in the right time as i did return to this issue last week.

I think the problem is in the reconstruded mesh as written in:
Foam::error::printStack(Foam::Ostream&) with simpleFoam -parallel

It goes well until i reconstructed my mesh which has 1 mesh error so the parallel failed. After that i tried to use another simplier .stl file (download from the web) and it did run without errors.

So i think you need to <checkMesh> and confirm.

If you have the same problem can you help me in discover how to prevent this 1 mesh error in reconstruted mesh?

Best regards

Originally Posted by xukai

Hello, I have met the same problem. Have you solved it? I want to discuss it together