[Gmsh] 3d mesh

Ruth V. Sabariego r.sabariego at ulg.ac.be
Mon Mar 8 16:38:31 CET 2010

You have to define the holes at the cube faces. See corrected geometry
attached.
Regards,
Ruth

On 08/03/10 16:16, Alexis Blasselle wrote:
> // maillage d'un cube et du reseau de fibres interieur
> lc1 = 0.1 ;
> R = 0.05;
> H = 0.25 ;
>
> Point(100) = {0., 0., 0., lc1};
> // premier cercle
> Point(1) = {  0. ,  0. , -H/2 , lc1  } ;
> Point(2) = {  R  ,  0. , -H/2 , lc1  } ;
> Point(3) = {  0. ,  R  , -H/2. , lc1  } ;
> Point(4) = { -R  ,  0. , -H/2 , lc1  } ;
> Point(5) = {  0. , -R  , -H/2 , lc1  } ;
>
> Circle(23) = { 2 , 1 , 3 } ;
> Circle(34) = { 3 , 1 , 4 } ;
> Circle(45) = { 4 , 1 , 5 } ;
> Circle(52) = { 5 , 1 , 2 } ;
>
>
> // deuxieme cercle
> Point(6) = {  0. ,  0. , H/2 , lc1  } ;
> Point(7) = {  R  ,  0. , H/2 , lc1  } ;
> Point(8) = {  0. ,  R  , H/2. , lc1  } ;
> Point(9) = { -R  ,  0. , H/2 , lc1  } ;
> Point(10) = {  0. , -R  , H/2 , lc1  } ;
>
> Circle(78) = { 7 , 6 , 8 } ;
> Circle(89) = { 8 , 6 , 9 } ;
> Circle(910) = { 9 , 6 , 10 } ;
> Circle(107) = { 10 , 6 , 7 } ;
>
>
>
> // troisieme cercle
> Point(11) = {  -H/2 ,  0. , 0. , lc1  } ;
> Point(12) = {  -H/2  ,  0. , R , lc1  } ;
> Point(13) = {  -H/2 ,  -R  , 0 , lc1  } ;
> Point(14) = {  -H/2  ,  0. , -R , lc1  } ;
> Point(15) = { -H/2 , R  , 0 , lc1  } ;
>
> Circle(1213) = { 12 , 11 , 13 } ;
> Circle(1314) = { 13 , 11 , 14 } ;
> Circle(1415) = { 14 , 11 , 15 } ;
> Circle(1512) = { 15 , 11 , 12 } ;
>
>
>
> // quatrieme cercle
> Point(16) = {  H/2 ,  0. , 0. , lc1  } ;
> Point(17) = {  H/2  ,  0. , R , lc1  } ;
> Point(18) = {  H/2 ,  -R  , 0 , lc1  } ;
> Point(19) = {  H/2  ,  0. , -R , lc1  } ;
> Point(20) = { H/2 , R  , 0 , lc1  } ;
>
> Circle(1718) = { 17 , 16 , 18 } ;
> Circle(1819) = { 18 , 16 , 19 } ;
> Circle(1920) = { 19 , 16 , 20 } ;
> Circle(2017) = { 20 , 16 , 17 } ;
>
>
>
> // cinquieme cercle
> Point(21) = {  0. ,  -H/2 , 0. , lc1  } ;
> Point(22) = {  0  ,  -H/2 , R , lc1  } ;
> Point(23) = {  -R ,  -H/2  , 0 , lc1  } ;
> Point(24) = {  0  ,  -H/2 , -R , lc1  } ;
> Point(25) = { R , -H/2  , 0 , lc1  } ;
>
>
> Circle(2223) = { 22 , 21 , 23 } ;
> Circle(2324) = { 23 , 21 , 24 } ;
> Circle(2425) = { 24 , 21 , 25 } ;
> Circle(2522) = { 25 , 21 , 22 } ;
>
>
>
> // sixieme cercle
> Point(26) = {  0. ,  H/2 , 0. , lc1  } ;
> Point(27) = {  0  ,  H/2 , R , lc1  } ;
> Point(28) = {  -R ,  H/2  , 0 , lc1  } ;
> Point(29) = {  0  ,  H/2 , -R , lc1  } ;
> Point(30) = { R , H/2  , 0 , lc1  } ;
>
> Circle(2728) = { 27 , 26 , 28 } ;
> Circle(2829) = { 28 , 26 , 29 } ;
> Circle(2930) = { 29 , 26 , 30 } ;
> Circle(3027) = { 30 , 26 , 27 } ;
>
> // les cercles de la boule , plan x = 0
> Circle(192) = {19, 100, 2};
> Circle(414) = {4, 100, 14};
> Circle(129) = {12, 100, 9};
> Circle(717) = {7, 100, 17};
>
> // plan z = 0
> Circle(2030) = {20, 100, 30};
> Circle(2815) = {28, 100, 15};
> Circle(1323) = {13, 100, 23};
> Circle(2518) = {25, 100, 18};
>
> // plan y = 0
> Circle(329) = {3, 100, 29};
> Circle(278) = {27, 100, 8};
> Circle(1022) = {10, 100, 22};
> Circle(245) = {24, 100, 5};
>
> M = 2*H + H/2;
>
> // les points de la boiboite
> Point(101) = {M, M, -M, lc1};
> Point(102) = {-M, M, -M, lc1};
> Point(103) = {-M, -M, -M, lc1};
> Point(104) = {M, -M, -M, lc1};
>
> Point(105) = {M, M, M, lc1};
> Point(106) = {-M, M, M, lc1};
> Point(107) = {-M, -M, M, lc1};
> Point(108) = {M, -M, M, lc1};
>
> // carre du bas
>
> Line(101102) = {101, 102};
> Line(102103) = {102, 103};
> Line(103104) = {103, 104};
> Line(104101) = {104, 101};
>
> // carre du haut
>
> Line(105106) = {105, 106};
> Line(106107) = {106, 107};
> Line(107108) = {107, 108};
> Line(108105) = {108, 105};
>
> // les aretes
>
> Line(101105) = {101, 105};
> Line(102106) = {102, 106};
> Line(103107) = {103, 107};
> Line(104108) = {104, 108};
>
> // les line loop des faces du cube
> Line Loop(1234) = {101102, 102103, 103104, 104101};
> Plane Surface(1234) = {-1234};
>
> Line Loop(1265) = {101102, 102106, -105106, -101105};
> Plane Surface(1265) = {1265};
>
> Line Loop(2376) = {102103, 103107, -106107, -102106};
> Plane Surface(2376) = {2376};
>
> Line Loop(5678) = {105106, 106107, 107108, 108105};
> Plane Surface(5678) = {5678};
>
> Line Loop(3487) = {103104, 104108, -107108, -103107};
> Plane Surface(3487) = {3487};
>
> Line Loop(4158) = {104101, 101105, -108105, -104108};
> Plane Surface(4158) = {4158};
>
>
> // extrusions
> out23[] = Extrude {0,0,-2*H} { Line{23}; };
> out34[] = Extrude {0,0,-2*H} { Line{34}; };
> out45[] = Extrude {0,0,-2*H} { Line{45}; };
> out52[] = Extrude {0,0,-2*H} { Line{52}; };
>
> Line Loop (1) = {out23[0], out34[0], out45[0], out52[0] };
>
> out78[] = Extrude {0,0,2*H} { Line{78}; };
> out89[] = Extrude {0,0,2*H} { Line{89}; };
> out910[] = Extrude {0,0,2*H} { Line{910}; };
> out107[] = Extrude {0,0,2*H} { Line{107}; };
>
> Line Loop (2) = {out78[0], out89[0], out910[0], out107[0] };
>
> out1213[] = Extrude {-2*H,0,0} { Line{1213}; };
> out1314[] = Extrude {-2*H,0,0} { Line{1314}; };
> out1415[] = Extrude {-2*H,0,0} { Line{1415}; };
> out1512[] = Extrude {-2*H,0,0} { Line{1512}; };
>
> Line Loop (3) = {out1213[0], out1314[0], out1415[0], out1512[0] };
>
> out1718[] = Extrude {2*H,0,0} { Line{1718}; };
> out1819[] = Extrude {2*H,0,0} { Line{1819}; };
> out1920[] = Extrude {2*H,0,0} { Line{1920}; };
> out2017[] = Extrude {2*H,0,0} { Line{2017}; };
>
> Line Loop (4) = {out1718[0], out1819[0], out1920[0], out2017[0] };
>
> out2223[] = Extrude {0,-2*H,0} { Line{2223}; };
> out2324[] = Extrude {0,-2*H,0} { Line{2324}; };
> out2425[] = Extrude {0,-2*H,0} { Line{2425}; };
> out2522[] = Extrude {0,-2*H,0} { Line{2522}; };
>
> Line Loop (5) = {out2223[0], out2324[0], out2425[0], out2522[0] };
>
> out2728[] = Extrude {0,2*H,0} { Line{2728}; };
> out2829[] = Extrude {0,2*H,0} { Line{2829}; };
> out2930[] = Extrude {0,2*H,0} { Line{2930}; };
> out3027[] = Extrude {0,2*H,0} { Line{3027}; };
>
> Line Loop (6) = {out2728[0], out2829[0], out2930[0], out3027[0] };
>
> // les surfaces
> Plane Surface(1) = {1};
> Plane Surface(2) = {2};
> Plane Surface(3) = {3};
> Plane Surface(4) = {4};
> Plane Surface(5) = {5};
> Plane Surface(6) = {6};
>
> Circle(208) = {20, 100, 8};
>
> Line Loop(7) = {717, -2017, 208, -78};
> Ruled Surface(7) = {7};
>
> Line Loop(8) = {-208, 2030, 3027, 278};
> Ruled Surface(8) = {8};
>
> Circle(257) = {25, 100, 7};
>
> Line Loop(9) = {-107, 1022, -2522, 257};
> Ruled Surface(9) = {9};
>
> Line Loop(10) = {-257, 2518, -1718, -717};
> Ruled Surface(10) = {10};
>
> Circle(302) = {30, 100, 2};
>
> Line Loop(11) = {-302, -2030, -1920, 192};
> Ruled Surface(11) = {11};
>
> Line Loop(12) = {329, 2930, 302, 23};
> Ruled Surface(12) = {12};
>
> Circle(185) = {18, 100, 5};
>
> Line Loop(13) = {-192, -1819, 185, 52};
> Ruled Surface(13) = {13};
>
> Line Loop(14) = {-2518, -2425, 245, -185};
> Ruled Surface(14) = {14};
>
> Circle(239) = {23, 100, 9};
>
> Line Loop(15) = {-129, 1213, 1323, 239};
> Ruled Surface(15) = {15};
>
> Line Loop(16) = {2223, 239, 910, 1022};
> Ruled Surface(16) = {16};
>
> Circle(2914) = {29, 100, 14};
>
> Line Loop(17) = {-2914, -329, 34, 414};
> Ruled Surface(17) = {17};
>
> Line Loop(18) = {-2815, 2829, 2914, 1415};
> Ruled Surface(18) = {18};
>
> Circle(234) = {23, 100, 4};
>
> Line Loop(19) = {234, 45, -245, -2324};
> Ruled Surface(19) = {19};
>
> Line Loop(20) = {-1323, 1314, -414, -234};
> Ruled Surface(20) = {20};
>
> Circle(289) = {28, 100, 9};
>
> Line Loop(21) = {-89, -278, 2728, 289};
> Ruled Surface(21) = {21};
>
> Line Loop(22) = {2815, 1512, 129, -289};
> Ruled Surface(22) = {22};
>
> Surface Loop(23) = {1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15,
> 16, 17, 18, 19, 20, 21, 22};
> //Volume(23) = {23};
>
> // les faces du cube
> Surface Loop(24) = {1234, 1265, 2376, 5678, 3487, 4158};
> Volume(24) = {24, -23};

--
Dr. Ir. Ruth V. Sabariego
University of Liege, Dept. of Electrical Engineering&  Computer Science,
Applied&  Computational Electromagnetics (ACE),
phone: +32-4-3663737 - fax: +32-4-3662910 - http://ace.montefiore.ulg.ac.be/

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