[Gmsh] new to gmsh: Hints to get started
Andrew C. Ward
a_ward at iprimus.com.au
Wed Dec 12 09:35:22 CET 2007
Dear gmsh list,
After using FIDAP for many years, I've today started looking at gmsh. I
have some habits to break, and wonder if anyone might give me a hint to
get me on my way, please?
My area of interest is bluff body flows, in particular atmospheric flows
around low-set buildings. I've started in gmsh with a simple cube (based
on the wind tunnel experiments of Castro and Robins more than 30 years
ago). This was very easy, thanks largely to the superb interactive
tutorial. In FIDAP, I have groups called inlet, outlet, cube, ground,
side, top and symmetry.
gmsh kindly made me a beautiful looking mesh. By default, it's very fine
throughout the domain, whereas I really only need it to be fine near the
ground and around the cube. With FIDAP, I specify the starting element
width, the number of elements and the geometric ratio of element widths,
along a line leading from the cube outwards (I hope this makes sense).
I'd like to achieve the same effect in gmsh but just need a pointer to
how I can get this happening.
Thanks so much for your advice.
Regards,
Andrew C. Ward