WindowsError during SnappyHexMesh

hc2011301539 · February 21, 2019, 9:45am

Hi mostaphaRoudsari, thanks for your help, I successfully installed the latest Butterfly, but I meet a problem when I run the indoor airflow 2d file

Do you know how to solve this problem?
PS: the indoor airflow file and outdoor airflow file can successfully operate on my computer

Asisnath · February 21, 2019, 10:03am

@hc2011301539 Are you running rhino grasshopper in administrator mode?

hc2011301539 · February 21, 2019, 10:09am

yep, in administrator mode

mostapha · February 22, 2019, 11:36pm

WindowsError most of the time happens when you can’t delete a file because it is in still in use. Can you share the full error report? Also trying to run the study in a new folder should solve this problem.

OlivierDambron · February 23, 2019, 12:44am

hi @hc2011301539

Try to turn on the snap to true in the snappyHexMeshdict component.

Let us know

Bing · March 1, 2019, 5:32pm

Hi,

I got the same issue. The error file is case.py. Also I tried snap to True in snappyHexMeshDict, but no luck.

Best
Bing

OlivierDambron · March 1, 2019, 6:54pm

hi @hc2011301539

I think its a meshing issue and you’ll need more cells in your domain.

You could do so by reducing the cellsize or increasing by 1 or 2 the refinement level of your geometry.

Have a go and let us know
Olivier

Bing · March 1, 2019, 9:10pm

Hi Olivier,

Thanks for helping but it seems not about meshing. It is the snappyHexMesh component. The error message I got is:

"
Updating global refinement level to (3, 3).
saving the new snappyHexMeshDict.
Runtime error (Win32Exception): WindowsError
Traceback:
line 444, in is_polyMesh_snappyHexMesh, “C:\Users\test\AppData\Roaming\McNeel\Rhinoceros\5.0\scripts\butterfly\case.py”
line 117, in script
"

Seems that is snappyHexMeshDict cannot be access.

Best
Bing

OlivierDambron · March 1, 2019, 11:34pm

@Bing

could you share your definition?

hc2011301539 · March 3, 2019, 5:02am

Thanks for your reply, but it’s still not working

02_1_indoor_airflow_2d.gh (428.9 KB)

hc2011301539 · March 3, 2019, 5:15am

Hi mostaphaRoudsari, I meet a new problem in indoor ventilation analysis, I want to test the ventilation effect of my ventilation blocks, but the results are weird, even after I delete these extra ventilation blocks, the result is still wrong.

wind simulation.gh (827.4 KB) This is the GH file
by the way, sometimes when I run the CFD simulation in butterfly, the values of wind velocity and pressure will appear some very large numbers

mostapha · March 3, 2019, 9:51pm

For new questions you should open a new topic! You can reference this post in your question if that will be helpful. Thanks.

Bing · March 4, 2019, 4:01pm

Sure. Here it is.
02_1_indoor_airflow_2d_error.gh (425.8 KB)

However, there is no changes at all from the example file.

Best
Bing

Bing · March 8, 2019, 4:58pm

Just an update of this case. Olivier help to solve the issue but responded on another post.

It seems that the mesh is the main issue. For this case, the _cell_count in BlockMesh was set as {0.2, 0.2, 0.2} in the example file, which is the main cause of the error. After changing it to {70, 1, 60}, the case runs well.

Thanks for helping Olivier.

Best
Bing

Iness6 · June 29, 2020, 2:49pm

Hi Mostapha ! I have an error on the precious component : BlockMesh . Do you know how to solve this. I need it for my work and I’m the only architect there, you’re the onlyone that can help me

This is the error message: ( I’m french so the first sentence is in french sorry)

Solution exception:Le chemin d’accs spcifi est introuvable.

–> FOAM FATAL ERROR:
cannot find file “C:/Program Files/blueCFD-Core-2017/system/controlDict”

From function virtual Foam::autoPtr<Foam::ISstream> Foam::fileOperations::uncollatedFileOperation::readStream(Foam::regIOobject&, const Foam::fileName&, const Foam::word&, bool) const
in file global/fileOperations/uncollatedFileOperation/uncollatedFileOperation.C at line 522.

FOAM exiting

tee: ‘log\blockMesh.log’: No such file or directory

mah · May 4, 2021, 2:30am

hi mostapha i have a problem with snappyhexmesh . can you help me plz???! this error is 1. Solution exception:‘surfaceFeatureExtract’ is not recognized as an internal or external command,
operable program or batch file.

butterfly · September 1, 2021, 10:16am

Hi, @mah and @mostapha I too seem to have the same error while running the butterfly indoor airflow sample files. Please let me know if there is a way around it.

kinonotofu · September 2, 2021, 1:40am

Are you using blueCFD-Core 2020-1? If so, I recommend you to use blueCFD-Core 2017-2. butterfly does not support blueCFD-Core 2020-1 yet.
The surfaceFeatureExtract command has been replaced by the surfaceFeatures command in blueCFD-Core 2020-1.

butterfly · September 3, 2021, 5:31am

Yes, that was the problem. I installed blueCFD-Core 2017-2, and reinstalled butterfly. Now the sample indoor flow file works perfectly. Thank You!