[Gmsh] Cylinder structured grid problem

[gmsh at praveen.e4ward.com]

Hi all,

I have attached below a simple script to generate grid for a full circle. I
create it for half a circle and use Symmetry to reflect it, so it becomes a
full circle.

But Symmetry is not working. Can you point out the mistake in my script.

Thanks
praveen


r = 1.0;  // cylinder radius
R = 10.0; // outer boundary radius

n1 = 10;
n2 = 10;

Point(1) = { 0, 0, 0};
Point(2) = {-r, 0, 0};
Point(3) = { r, 0, 0};

Point(4) = {-R, 0, 0};
Point(5) = { R, 0, 0};

Circle(1) = {3,1,2};
Circle(2) = {5,1,4};

Line(3) = {5,3};
Line(4) = {2,4};

Line Loop(1) = {3, 1, 4, -2};
Ruled Surface(1) = {1};
Transfinite Surface(1) = {3,5,4,2};
Recombine Surface(1);

Transfinite Line {3,4} = n1;
Transfinite Line {1,2} = n2;

Symmetry {0.0, 1.0, 0.0, 0.0} { Duplicata{Surface{1};} }
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