[Gmsh] No tetrahedra in region 10 problem

[Kamil ÖZDEN]

Dear All,

I'm trying to generate a constricted pipe geometry and mesh via Gmsh. It 
works fine with 1D and 2D meshes but when say to mesh in 3D with the 
Delaunay algortihm it gives such an error:



I'm sending the .geo file in the attachment. What can be the problem?

Regards,
Kamil
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cl__1 = 1;
Point(1) = {0, 0, 0, 1};
Point(2) = {3.2, 0, 0, 1};
Point(3) = {-3.2, 0, 0, 1};
Point(4) = {0, 3.2, 0, 1};
Point(5) = {0, -3.2, 0, 1};
Point(6) = {0, -3.2, -37.3, 1};
Point(7) = {0, 0, -37.3, 1};
Point(8) = {3.2, 0, -37.3, 1};
Point(13) = {0, 3.2, -37.3, 1};
Point(18) = {-3.2, 0, -37.3, 1};
Point(19) = {1.15, 0, -37.3, 1};
Point(20) = {-1.15, 0, -37.3, 1};
Point(21) = {0, 1.15, -37.3, 1};
Point(22) = {0, -1.15, -37.3, 1};
Point(23) = {0, -1.15, -50, 1};
Point(24) = {0, 0, -50, 1};
Point(25) = {1.15, 0, -50, 1};
Point(30) = {0, 1.15, -50, 1};
Point(35) = {-1.15, 0, -50, 1};
Point(36) = {0, -3.2, -50, 1};
Point(37) = {3.2, 0, -50, 1};
Point(38) = {0, 3.2, -50, 1};
Point(39) = {-3.2, 0, -50, 1};
Point(40) = {3.2, 0, -150, 1};
Point(41) = {0, 0, -150, 1};
Point(42) = {0, 3.2, -150, 1};
Point(47) = {-3.2, 0, -150, 1};
Point(52) = {0, -3.2, -150, 1};
Circle(1) = {5, 1, 2};
Transfinite Line {1} = 3Using Progression 1;
Circle(2) = {2, 1, 4};
Transfinite Line {2} = 3Using Progression 1;
Circle(3) = {4, 1, 3};
Transfinite Line {3} = 3Using Progression 1;
Circle(4) = {3, 1, 5};
Transfinite Line {4} = 3Using Progression 1;
Circle(8) = {6, 7, 8};
Transfinite Line {8} = 3Using Progression 1;
Circle(9) = {8, 7, 13};
Transfinite Line {9} = 3Using Progression 1;
Circle(10) = {13, 7, 18};
Transfinite Line {10} = 3Using Progression 1;
Circle(11) = {18, 7, 6};
Transfinite Line {11} = 3Using Progression 1;
Line(13) = {5, 6};
Transfinite Line {13} = 3Using Progression 1;
Line(14) = {2, 8};
Transfinite Line {14} = 3Using Progression 1;
Line(18) = {4, 13};
Transfinite Line {18} = 3Using Progression 1;
Line(22) = {3, 18};
Transfinite Line {22} = 3Using Progression 1;
Circle(29) = {22, 7, 19};
Transfinite Line {29} = 3Using Progression 1;
Circle(30) = {19, 7, 21};
Transfinite Line {30} = 3Using Progression 1;
Circle(31) = {21, 7, 20};
Transfinite Line {31} = 3Using Progression 1;
Circle(32) = {20, 7, 22};
Transfinite Line {32} = 3Using Progression 1;
Circle(34) = {23, 24, 25};
Transfinite Line {34} = 3Using Progression 1;
Circle(35) = {25, 24, 30};
Transfinite Line {35} = 3Using Progression 1;
Circle(36) = {30, 24, 35};
Transfinite Line {36} = 3Using Progression 1;
Circle(37) = {35, 24, 23};
Transfinite Line {37} = 3Using Progression 1;
Line(39) = {22, 23};
Transfinite Line {39} = 3Using Progression 1;
Line(40) = {19, 25};
Transfinite Line {40} = 3Using Progression 1;
Line(44) = {21, 30};
Transfinite Line {44} = 3Using Progression 1;
Line(48) = {20, 35};
Transfinite Line {48} = 3Using Progression 1;
Circle(55) = {37, 24, 36};
Transfinite Line {55} = 3Using Progression 1;
Circle(56) = {37, 24, 38};
Transfinite Line {56} = 3Using Progression 1;
Circle(57) = {38, 24, 39};
Transfinite Line {57} = 3Using Progression 1;
Circle(58) = {39, 24, 36};
Transfinite Line {58} = 3Using Progression 1;
Circle(64) = {40, 41, 42};
Transfinite Line {64} = 3Using Progression 1;
Circle(65) = {42, 41, 47};
Transfinite Line {65} = 3Using Progression 1;
Circle(66) = {47, 41, 52};
Transfinite Line {66} = 3Using Progression 1;
Circle(67) = {52, 41, 40};
Transfinite Line {67} = 3Using Progression 1;
Line(69) = {37, 40};
Transfinite Line {69} = 3Using Progression 1;
Line(70) = {38, 42};
Transfinite Line {70} = 3Using Progression 1;
Line(74) = {39, 47};
Transfinite Line {74} = 3Using Progression 1;
Line(78) = {36, 52};
Transfinite Line {78} = 3Using Progression 1;
Line Loop(6) = {1, 2, 3, 4};
Plane Surface(6) = {6};
Line Loop(15) = {1, 14, -8, -13};
Ruled Surface(15) = {15};
Line Loop(19) = {2, 18, -9, -14};
Ruled Surface(19) = {19};
Line Loop(23) = {3, 22, -10, -18};
Ruled Surface(23) = {23};
Line Loop(27) = {4, 13, -11, -22};
Ruled Surface(27) = {27};
Line Loop(41) = {29, 40, -34, -39};
Ruled Surface(41) = {41};
Line Loop(45) = {30, 44, -35, -40};
Ruled Surface(45) = {45};
Line Loop(49) = {31, 48, -36, -44};
Ruled Surface(49) = {49};
Line Loop(53) = {32, 39, -37, -48};
Ruled Surface(53) = {53};
//Line Loop(60) = {55};
//Plane Surface(60) = {60};
Line Loop(71) = {56, 70, -64, -69};
Ruled Surface(71) = {71};
Line Loop(75) = {57, 74, -65, -70};
Ruled Surface(75) = {75};
Line Loop(79) = {58, 78, -66, -74};
Ruled Surface(79) = {79};
Line Loop(83) = {-55, 69, -67, -78};
Ruled Surface(83) = {83};
Line Loop(84) = {64, 65, 66, 67};
Plane Surface(84) = {84};
Line Loop(85) = {8, 9, 10, 11, -32, -31, -30, -29};
Plane Surface(85) = {85};
Line Loop(86) = {34, 35, 36, 37, 55, -58, -57, -56};
Plane Surface(86) = {86};
Surface Loop(1) = {6, 15, 19, 23, 27, 85, 41, 45, 49, 53, 86, 71, 75, 79, 83};
Volume(1) = {1};