SetFactory("OpenCASCADE");
Box(1) = {0, 0, 0, 1, 1, 0.1};
Box(2) = {1, 0, 0, 1, 1, 0.1};
Coherence;

Physical Volume("bulk_m1", 1) = {1};
Physical Volume("bulk_m2", 2) = {2};
Physical Surface("source", 10) = {1};
Physical Surface("pmc", 11) = {3,4,8,9};
Physical Surface("pec", 12) = {5,6,10,11};
Physical Surface("abc", 13) = {7};

MeshSize{:} = 0.06;