SimScale CAE Forum

Mesh edge splitting failure


#1

im trying to split the edges on my stl mesh to allow me to select faces to set up an internal flow (prior to this i had only done external flow) but it crashes out, gives me an error but no meshing log every time


#2

first time using simscfale for internal flow instead of external https://www.simscale.com/projects/Lemlurker/analysis_of_3d_printer_fan_nozzles_for_single_fan_cooling_capabilities/


#3

Thanks for the link @Lemlurker!

Is there a way you can export it from Meshlab already splitted? Tried it once with the STL splitting operation but keeps failing until now.

Best,

Jousef


#4

i tried splitting in blender and splitting each face group into its own object, havent found the splitting setting in meshlab yet


#5

ive split it like this in blender, it doesnt seem to make a difference


#6

Hi @Lemlurker!

You could also use the Split operation provided by OnShape. I am not aware of a method enabling you to split faces in Meshlab. I mean as shown Blender can do it but will it also export the model with split faces?

Cheers!

Jousef


#7

just ran this and both binary and non binary failed, will look at onshape


#8

i cant find any split selection or split by angle options in onshape, do you have a guide?


#9

okay so onshape will allow me to reference a mesh but will not work with them, i managed to get one shape to see the parts have different meshes by exporting in obj (might this be a possible future file format?) it appears that .stl as a format does not support multiple meshes so either the inhouse splitter must work or a different format used


#10

IT WORKED! i dont know weather it was me remaining on the same tab for the entire time or uploading a converted .obj, will report back when i have it sussed


#11

Hi @Lemlurker!

You did use the split operation on OnShape, right? Awesome! For me this worked in the past when I tried to split faces.

Best,

Jousef


#12

that doesnt work for stl’s


#13

yer, I couldn’t get it to work the other day, your not the only one.


#14

I think I figured it out, try leaving that window on screen, by that I mean no visiting other meshes or changing tabs, it’s weird but it seemed to work


#15

didn’t work for me, unfortunately, maybe the stl is just dodgy.


#16

try exporting as an obj with the edges split into different meshes and then convet to stl online and then reimport


#17

I haven’t got access to the original I was trying to help with someone’s project, but thatnks :slight_smile: