how to create solid body, inlet, outler and wall from .stl file for ANSYS

Hi,

I am new Hypermesh and Alatir. I need to create a mesh for simulation. I just started using ANSYS and Hypermesh and i cannot figure out how to create a solid from .stl file. I need to assign inlet outlet, wall and mesh the entire volume. I have to figure out but i couldn't find any sources to create a mesh from .stl file.

Thank you

Volkan

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QuyNguyenDai

Define inlet, outlet & wall on imported STL. One component for each part
Your 2D mesh should be closed
3D => CFD tetramesh

There're some tutorials in Hypermesh installation.

Pranav Hari

Hi volkanyildirim48

Once the STL file has been imported you can then use Geom > surfaces from FE and select the highest complexity in this panel > select the elements to create surfaces from STL, hence you can create geometry from stl.

To directly solid mesh your STL you can use ShrinkWrap also
You can achieve a good tetramesh for all purposes, using the Shrink Wrap panel. The shrink wrap can generally be used as a quick mechanism to generate solid meshes.

1. Go to 2D > Shrink Wrap panel.
2. Here there is an option generate solid mesh – this will produce an all-hexa or all-tetra mesh based on the selected elements or geometry.
3. Make sure the generate solid mesh checkbox is active
4. This will expose a tet collapse input, please try several input values depending on your quality requirements.

Check this forum post too..

https://community.altair.com/community?id=community_question&sys_id=86864c3a1b2bd0908017dc61ec4bcb45

QuyNguyenDai

With a 'good-enough' STL, CFD could be created directly from STL, not need to build surface.

QuyNguyenDai

Here's a example of 'good' STL:

With this STL, you can build directly your CDF mesh:

1925443017_cfd_from_stl.hm-EngineeringSolutions2017.3-CFD(General)_002293.png.75e4ebba5be0c1781099ad1fcce34604.png

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