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Hi,<br>
<br>
I'm a french user of Gmsh and I write you to help me to solve a
meshing problem.<br>
<br>
I have a square domain (10 cm x 10 cm) and inside two circles
(diameter = 0.1 cm). I want to generate a mesh so that :<br>
<br>
1) each quarter circle arc of the two circles as 8 points<br>
2) the mesh is fine in the vicinity of each of the two circles<br>
3) the mesh is coarse (with a characteristic length of 1 cm) near
the outer edges of the domain <b><big>AND</big></b> between the two
circles.<br>
<br>
I've tried firstly to use only the transfinite line technique to
discretize each of the circle arcs with 8 points. It works perfectly
but the mesh between the two circles is too fine.<br>
<br>
So I've tried to use the fields (attractor and threshold) to
generate a coarse mesh betwwen the two circles but it seems not to
work : the region between the two circles is still too fine meshed
(see "attractor_circle.geo").<br>
<br>
For information I have no problem when I use the attractor and
threshold fields in the case of two points instead of the two
circles (see "attractor_point.geo") : the mesh between the two
points has a characteristic length equal to 1 cm.<br>
<br>
How can I do ? Do I make a mistake ?<br>
<br>
I thank you for your help.<br>
<br>
Sincerely yours.<br>
<br>
N. BEUDEZ<br>
<br>
<br>
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