I run into some errors when trying to scale my model down. The programme imports my model on a scale 3 times higher than the original. When I try to scale down by 0.001 I get the error seen in the screenshot. What are the faults it implies ? Also when I try to scale down by 0.1 the model appears to scale but also leaves pieces and parts of pieces behind. I’m not sure what this means and unsure of how to proceed.
I created the individual lego pieces in FreeCad, made an assembly and created a solid out of the assembly. I then imported this to Simscale as an STL file.
Here is the link for the project - https://www.simscale.com/workbench/?pid=7120612897778203902&dcs=8389c811-a034-468f-a6f7-f8cb4ce14854
Many thanks,
Colin
Hi!
In general the stl format tends to be the worst one, unless you’re running PWC/Incompressible LBM simulations.
In any case, the reason why the stl model comes in with an unexpected size is that stl geometries do not have a unit associated with them. When you import a stl geometry to a metric project in SimScale, we assume that it was exported from your CAD tool with units of meters.
From your description, it is likely that the CAD model was exported with other units, so here are the possible workflows:
- Have the CAD model in meters in your CAD tool, or…
- When importing the geometry to SimScale, select the unit that you used to export the CAD model from your CAD tool
Relevant documentation page: CAD Preparation & Upload | Simulation Setup | SimScale
Cheers
