Problem to extract an external fluid volume in CAD mode

Project Support
1

Hello,
I’m Don. I am trying to create an external air flow simulation of a bicycle. I have designed the bicycle and the helmet in SolidWorks. The rider has been imported into SolidWorks as an STL file. I have checked the mesh several times to see if it has any inconsistencies. I am uploading my assembly via zip. In CAD mode, I want to create the fluid volume, but I cannot create it because some surfaces are incorrect.

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So how can I create my simulation volume with an STL file?

2

Hello Don,
thanks for reaching out to us here in the forum.

The issue with the .stl file is that it’s only surface and not volume-based.

What i would suggest you is to perform the subtract operation within Solidworks and upload that geometry to SimScale for meshing as a .stp file.

Another option is to use the hex-dominant mesher with the bounding box included like in this tutorial.

Best regards Sebastian