Question #683284 on Yade changed:
https://answers.launchpad.net/yade/+question/683284

    Status: Open => Answered

Jan Stránský proposed the following answer:
Hello,

you can use several approaches, e.g.:

1)
something similar to SpherePack.makeCloud, i.e. creating randomly loose packing 
of polyhedrons and then compress it

2)
some geometric method, where you e.g. split the region recursively in 
polyhedrons. With this approach, you can have porosity exactly zero. You can 
then modify each polyhedron (make it smaller, "cut" some edges etc.) to reach 
desired porosity.

surely there are other options.

cheers
Jan

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