demo.geo

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Point(1) = {-1, 0, 0, 1.0};
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Point(2) = {-0.8, 0, 0, 1.0};
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Point(3) = {-0.7, 0, 0, 1.0};
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Point(4) = {-0.6, 0, 0, 1.0};
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Point(5) = {-1.2, 0, 0, 1.0};
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Point(6) = {-1.3, 0, 0, 1.0};
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Point(7) = {-1.4, 0, 0, 1.0};
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Point(8) = {-1, 0.2, 0, 1.0};
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Point(9) = {-1, 0.3, 0, 1.0};
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Point(10) = {-1, 0.4, 0, 1.0};
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Point(11) = {-1, -0.2, 0, 1.0};
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Point(12) = {-1, -0.3, 0, 1.0};
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Point(13) = {-1, -0.4, 0, 1.0};
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Point(14) = {0.6, 0, 0, 1.0};
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Point(15) = {1.1, 0, 0, 1.0};
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Point(16) = {0.9, 0, 0, 1.0};
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Point(17) = {0.6, 0.5, 0, 1.0};
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Point(18) = {0.6, 0.3, 0, 1.0};
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Point(19) = {0.6, -0.3, 0, 1.0};
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Point(20) = {0.3, 0, 0, 1.0};
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Point(21) = {0.6, -0.5, 0, 1.0};
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Line(1) = {10, 17};
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Line(2) = {13, 21};
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Circle(3) = {10, 1, 7};
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Circle(4) = {7, 1, 13};
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Circle(5) = {21, 14, 15};
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Circle(6) = {15, 14, 17};
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Circle(7) = {16, 14, 18};
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Circle(8) = {18, 14, 20};
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Circle(9) = {20, 14, 19};
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Circle(10) = {19, 14, 16};
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Circle(11) = {2, 1, 8};
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Circle(12) = {8, 1, 5};
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Circle(13) = {5, 1, 11};
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Circle(14) = {11, 1, 2};
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Circle(15) = {3, 1, 9};
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Circle(16) = {9, 1, 6};
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Circle(17) = {6, 1, 12};
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Circle(18) = {12, 1, 3};
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Recursive Delete {
  Point{4}; 
}
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Curve Loop(1) = {1, -6, -5, -2, -4, -3};
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Curve Loop(2) = {8, 9, 10, 7};
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Curve Loop(3) = {15, 16, 17, 18};
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Plane Surface(1) = {1, 2, 3};
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Curve Loop(4) = {11, 12, 13, 14};
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Plane Surface(2) = {3, 4};
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Extrude {0, 0, 0.1} {
  Surface{1}; 
}
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Extrude {0, 0, 0.1} {
  Surface{2}; 
}
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Extrude {0, 0, 0.1} {
  Surface{132}; 
}
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Extrude {0, 0, -0.1} {
  Surface{2}; 
}
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Physical Surface("boundary1") = {65, 61};
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Physical Surface("boundary2") = {207, 123, 165, 211, 127, 169};
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Physical Volume("volume") = {1, 4, 2, 3};
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Physical Curve("boundary2") = {98, 12, 97, 13, 122, 164, 206};
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Physical Curve("boundary1") = {60};
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Physical Point("boundary2") = {110, 5};