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-------- Original Message --------
Subject: [Gmsh] BRL-CAD for Geometry?
Local Time: 2 février 2017 4:07 PM
UTC Time: 2 février 2017 05:07
From: [email protected]
To: [email protected]
Hi All,
It's me again, wondering how I should go about integrating a command-line
geometry package into OneLab (or some other chain of multi-physics tools).
As I've mentioned before, although there is no shortage of tools to do meshing,
finite element analysis or CFD and so forth, there is no simple way to build
geometries from the command line.
Has anybody ever used this BRL-CAD/Mged command line CAD package? It doesn't
look bad, but I do have concerns about it exporting to formats that these
meshing and physics programs use.
In the past I have used BRL-CAD's mged command-line tool to create geometries
for subsequent CFD simulations. I used BRL-CAD's g-stl command-line tool to
export a triangulation of the bounding surface in STL format. Gmsh can read
this in.
More recently though I'm using FreeCAD which can be scripted in Python and so
run from the command-line. Besides STL, this also outputs IGES, STEP, and BRep,
which can contain more information that STL. Gmsh reads all four formats.
OpenSCAD is an excellent accompaniment to FreeCAD too, especially via Solid
Python.
Often my workflow looks like FreeCAD -> Gmsh -> FreeFem++ -> (Gmsh or pandas),
with the whole thing run from a single SCons build file. No GUIs, except for
preliminary exploratory work.
I haven't looked into OneLab yet.
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