node_to_node

circles_2d.geo
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			cl1 = 0.0025;
			cl2 = 0.0025;
			cl3 = 0.0025;
			Dy = 0.0;
			radius = 0.1;
			y = 0.1;
			epsilon = 0.0;
			Point(1) = {0, y + epsilon, 0, cl1};
			Point(2) = {radius, radius + y + epsilon, 0, cl2};
			Point(3) = {-radius, radius + y + epsilon, 0, cl2};

			Point(11) = {0, y, 0, cl2};
			Point(12) = {radius, -radius + y, 0, cl2};
			Point(13) = {-radius,- radius + y, 0, cl2};

			Point(8) = {0, radius + y + epsilon, 0, cl2};
			Point(18) = {0, -radius + y, 0, cl2};

			Circle(1) = {3, 8, 1};
			Circle(2) = {1, 8, 2};

			Circle(11) = {13, 18, 11};
			Circle(12) = {11, 18, 12};

			Line(3) = {2, 8};
			Line(13) = {8, 3};

			Line(30) = {12, 18};
			Line(31) = {18, 13};


			Line Loop(9) = {2, 3, 13, 1};
			Plane Surface(9) = {9};

			Line Loop(19) = {-12, -30, -31, -11};
			Plane Surface(19) = {19};

			Physical Line("contact_bottom") = {11, 12};
			Physical Line("contact_top") = {1, 2};
			Physical Line("bottom") = {30, 31};
			Physical Line("top") = {3, 13};
			Physical Surface("bot_body") = {19};
			Physical Surface("top_body") = {9};