// Gmsh project created on Wed Jul 17 13:37:45 2019 //+ SetFactory("OpenCASCADE"); Cylinder(1) = {0, 0, 0, 1.64, 0, 0, 0.019, 2*Pi}; //+ Cylinder(2) = {0, 0, 0, 1.64, 0, 0, 0.017, 2*Pi}; //+ BooleanDifference{ Volume{1}; Delete; }{ Volume{2}; Delete; } //+ Physical Volume(1) = {1}; //+ //Physical Surface(2) = {6}; //+ //Physical Surface(3) = {5}; //+ //Physical Surface(4) = {4}; //+ //Physical Surface(5) = {7}; //+