SimScale CAE Forum

CHT FATAL I/O Error


#1

Hi ,

I got this error while running the chtMultiRegionSimpleFoam process on Simscale.

"polling iterations : 0
sigFpe : Enabling floating point exception trapping (FOAM_SIGFPE).
fileModificationChecking : Monitoring run-time modified files using timeStampMaster
allowSystemOperations : Allowing user-supplied system call operations
[0]
[0]
[0] --> FOAM FATAL ERROR:
[0] chtMultiRegionSimpleFoam: cannot open case directory “processor0”
[0]
[0]
FOAM parallel run exiting
[0]
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //

MPI_ABORT was invoked on rank 0 in communicator MPI_COMM_WORLD
with errorcode 1.
NOTE: invoking MPI_ABORT causes Open MPI to kill all MPI processes.
You may or may not see output from other processes, depending on
exactly when Open MPI kills them."

Thanks in Advance.
Best
bz


#2

Hi @bloodyzohair,

did it happen in a public project? If yes, could you post the link here such that one can take a closer look?

Thanks,

David


#3

Hi @dheiny ,

The simulation is “cht” and run as “CHT1”.

https://www.simscale.com/workbench?publiclink=647591e1-187d-4840-8255-00e4e1af6720

Thanks in advance,

best
bz


#4

Hi @bloodyzohair,

thanks! Looking into it + getting back to you asap!

Best,

David


#5

Hi @bloodyzohair,

I had a look a your simulation. The issue is that you don’t have a multiregion mesh in the way it is currently supported. I would suggest following steps of our tutorial ‘Hex-dominant parametric’ tutorial for a multiregion mesh for Electronics cooling. It should be straightforward.

You should be able to start with your simulation once the issue with the mesh is resolved. The setup looks correct.


#6

Hi @dheiny und @gholami ,

Thank you very much for the instant response and apologies for late response. I am currently working on it. Will report the feedback upon succesful completion.

Best
bz


#7

Hi @bloodyzohair,

excellent - let us know how it goes!

Best,

David


#8

Hi @dheiny,

I am experiencing problems with the bounding of the base mesh box around the multi region mesh geometry. A manual value input is giving me an unwanted result. Please help.

Best
Zohair


#9

UPDATE :

Manual entry of limits of base mesh box and material point.
Mesh Run .
Error :
“[0] --> FOAM FATAL ERROR:
[0] Cannot find triSurfaceMesh starting from “processor0/constant/triSurface/solid_0.stl”
[0]
[0] From function triSurfaceMesh::checkFile(const fileName&, const fileName&)
[0] in file searchableSurface/triSurfaceMesh.C at line 116.
[0]
FOAM parallel run exiting”

Best
Zohair


#10

Hi @bloodyzohair,

did it happen in the same project? So shall I re-import it?

Best,

David


#11

Hi @dheiny ,

Yes. It happened in the same project. I think importing it again would really help.
I was wondering the problem might be either with the geometry format or the Material point definition.
Found no discrepancies.
Will be rechecking,

Best
Zohair


#12

Hi @dheiny,

Found the problem in the material point definition. It was supposed to be in the fluid region but instead was defined in the solids region.
The system meshed it finally, although theres a lot of tweaking to be done.

Best
Zohair


#13

Hi @bloodyzohair,

glad that it worked out. You’re right, we’re currently looking into more automation steps for the meshing workflow, that there are more settings pre-configured adaptive to the geometry. Is there any specific that you’d like to see changed when meshing?

Thanks for your feedback!

David