add unsteady laminar cylinder

Author: bigfooted

incompressible_flow/Inc_Unsteady_Cylinder/cylinder_fine.geo

@@ -0,0 +1,90 @@
+//+
+Point(1) = {0, 0, 0, 1.0};
+//+
+Point(2) = {1, 0, 0, 1.0};
+//+
+Point(3) = {-1, 0, 0, 1.0};
+//+
+Point(4) = {0, 1, 0, 1.0};
+//+
+Point(5) = {0, -1, 0, 1.0};
+//+
+Point(6) = {0, -.005, 0, 1.0};
+//+
+Point(7) = {0, .005, 0, 1.0};
+//+
+Point(8) = {0.005, .0, 0, 1.0};
+//+
+Point(9) = {-0.005, .0, 0, 1.0};
+//+
+Circle(1) = {7, 1, 8};
+//+
+Circle(2) = {8, 1, 6};
+//+
+Circle(4) = {6, 1, 9};
+//+
+Circle(5) = {9, 1, 7};
+//+
+Circle(6) = {4, 1, 2};
+//+
+Circle(7) = {2, 1, 5};
+//+
+Circle(8) = {5, 1, 3};
+//+
+Circle(9) = {3, 1, 4};
+//+
+Line(10) = {8, 2};
+//+
+Line(11) = {7, 4};
+//+
+Line(12) = {9, 3};
+//+
+Line(13) = {6, 5};
+//+
+Curve Loop(1) = {11, 6, -10, -1};
+//+
+Plane Surface(1) = {1};
+//+
+Curve Loop(2) = {2, 13, -7, -10};
+//+
+Plane Surface(2) = {2};
+//+
+Curve Loop(3) = {4, 12, -8, -13};
+//+
+Plane Surface(3) = {3};
+//+
+Curve Loop(4) = {5, 11, -9, -12};
+//+
+Plane Surface(4) = {4};
+//+
+Transfinite Curve {12, 11} = 200 Using Progression 1.03;
+//+
+Transfinite Curve {11, 10} = 200 Using Progression 1.03;
+//+
+Transfinite Curve {10, 13} = 200 Using Progression 1.03;
+//+
+Transfinite Curve {13, 12} = 200 Using Progression 1.03;
+//+
+Transfinite Curve {9, 5} = 200 Using Progression 1.0;
+//+
+Transfinite Curve {6, 1} = 200 Using Progression 1.0;
+//+
+Transfinite Curve {7, 2} = 200 Using Progression 1;
+//+
+Transfinite Curve {8, 4} = 200 Using Progression 1;
+//+
+Transfinite Surface {1};
+//+
+Transfinite Surface {2};
+//+
+Transfinite Surface {3};
+//+
+Transfinite Surface {4};
+//+
+Recombine Surface {1, 2, 3, 4};
+//+
+Physical Curve("farfield") = {9, 6, 7, 8};
+//+
+Physical Curve("wall") = {5, 1, 2, 4};
+//+
+Physical Surface("interior") = {4, 1, 2, 3};