[Gmsh] 2D structured mesh - surface with curve lines
Christophe Geuzaine
christophe.geuzaine at case.edu
Tue Jun 20 16:48:12 CEST 2006
Pei-Ying Hsieh wrote:
>
> Dear GMSH users:
>
> I am trying to mesh a 2D surface (consists of 2 straight lines and 2
> curcular arc) using structred mesh (will be all Quad). There is no
> problem if all 4 sides (lines) are striaght lines. But, circular arc
> seems to be a problem. Is there a way to do this? Thanks a lot if you
> can take a look at this!
>
> Pei
> -----------------------------------------
> lc = 0.2;
> Point(4) = {0, 1, 0, lc};
> Point(5) = {0, 0, 0, lc};
> Point(6) = {-1, 0, 0, lc};
> Point(7) = {-2, 0, 0, lc};
> Point(8) = {0, 2, 0, lc};
> Line (7) = {8, 4};
> Line (8) = {6, 7};
> Circle (9) = {7, 5, 8};
> Circle (10) = {4, 5, 6};
> Line Loop(11) = {7, 10, 8, 9};
> Plane Surface(12) = {11};
> Transfinite Line{7:10} = 6;
> Transfinite Surface{12} = {7, 10, 8, 9};
Hi Pei - The last line should be:
Transfinite Surface{12} = {7, 6, 4, 8};
(Transfinite surfaces are defined in terms of vertices, not bounding
curves.)
> Recombine Surface {12};
>
> /
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--
Christophe Geuzaine
Assistant Professor, Case Western Reserve University, Mathematics
http://www.case.edu/artsci/math/geuzaine