[Gmsh] 3D non-uniform meshing

[Jeremy Theler]

http://gmsh.info/doc/texinfo/gmsh.html#Specifying-mesh-element-sizes

On Sat, 2020-05-30 at 00:21 -0700, Tian Xia wrote:
> Hi Gmsh developers,
> Thank you for developing this extremely useful tool. Recently I have
> encountered a couple of problems about generating 3D non-uniform
> mesh:
> 
> 1. If I define a background (for example threshold) field and
> define the lc for an object using "Characteristic Length{
> PointsOf{Volume{1};} } = lc;", the mesh size in the volume 1 will
> have two mesh size definitions. How will Gmsh treat this this? Will
> it just use the smaller lc or overwrite one of these? 
> 
> 2. If I'd like to mesh a box in this way: the surface closed to the
> eight corners (for example, distance=1)  need to be densely meshed
> (lc0), other part of the surface needs to be meshed with lc1. Inside
> the volume, it can be meshed as coarse as possible. Is there a way to
> do that in Gmsh?
> 
> Thank you for your help!
> 
> Bet regards.
> Tian
> 
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