Sculpt the complementary domain

Coreform Cubit Meshing
#1

I am trying to use Sculpt to mesh a domain for an external flow problem.
The main idea would be to import the STL, create a sort of a bounding box containing the STL for the external domain, perform a boolean operation to cut the STL part from the bounding box and then to mesh the remaining with Sculpt.

However, I am not able to perform the cut operation, being the STL and the geometry two different object models.

Do you have any suggestion for how to handle such mesh problems?

Thanks,

#2

Hi,

Sculpt will allow you to mesh the volume around your STL model without needing to perform any Boolean operations.

Open the sculpt panel under Mesh/Volume/Parallel Sculpt. Select the Advanced Options checkbox and then define your bounding box.

image
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Next go the Mesh tab. Click the Mesh Void checkbox and then you can select the Mesh Void Only option. I would suggest setting a block ID for the elements in the void.
image

Click the Mesh button and you will get a mesh that will contain only the void around your STL model.
image

I created this last image by turning on the graphics clipping plane and typing “draw block 1” from the command prompt.

Thanks,
Karl

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