On 18 Jun 2014, at 12:23, Julian Dean <[email protected]> wrote:
> Hi all, > > I have a nice voranoi structure that i’ve have gotten gmsh to draw out for > me. I want to mesh the plane surfaces really fine and then extend out to a > large mesh in the volume (such as below) > Even though all surfaces have been selected, as the manual says it causes > some issues that some surfaces are fine, some are half meshed with fine and > the rest of the surface coarse and some are just coarse etc etc - > > Is there any hacks that can be used to get around this - edge control is nice > but not quite what i need. I might have to move away from gmsh as really do > require this fine control of meshing but don’t want to if I can help it - is > fixing this on the horizon any time soon? > > Is there a way of telling gmsh to mesh each surface with a fine mesh, even if > it is separately, and then go on to extend to a large coarse mesh in the > volumes? > One way would be to use the "Restrict" Field:
restrict.geo
Description: Binary data
> cheers
>
> Julian
>
>
>
> Geometry.AutoCoherence=0;
>
> Lc1 = 0.020000;
>
> Point(0)={0.500000,0.500000,-0.500000, Lc1};
> Point(1)={-0.500000,0.500000,-0.500000, Lc1};
> Point(2)={0.500000,0.500000,0.000000, Lc1};
> Point(3)={-0.500000,0.500000,0.000000, Lc1};
> Point(4)={-0.500000,-0.166426,-0.000000, Lc1};
> Point(5)={-0.457949,-0.202895,-0.000000, Lc1};
> Point(6)={0.500000,-0.414996,-0.000000, Lc1};
> Point(7)={0.500000,-0.212319,-0.500000, Lc1};
> Point(8)={-0.500000,0.009092,-0.500000, Lc1};
> Point(9)={-0.500000,-0.191355,-0.005499, Lc1};
>
> Line(1)={7,6};
> Line(2)={6,2};
> Line(3)={2,0};
> Line(4)={0,7};
> Line Loop(1)={1,2,3,4};
> Plane Surface(1)={1};
> Line(6)={3,1};
> Line(7)={1,0};
> Line(8)={0,2};
> Line(9)={2,3};
> Line Loop(2)={6,7,8,9};
> Plane Surface(2)={2};
> Line(11)={1,8};
> Line(12)={8,7};
> Line(13)={7,0};
> Line(14)={0,1};
> Line Loop(3)={11,12,13,14};
> Plane Surface(3)={3};
> Line(16)={4,9};
> Line(17)={9,8};
> Line(18)={8,1};
> Line(19)={1,3};
> Line(20)={3,4};
> Line Loop(4)={16,17,18,19,20};
> Plane Surface(4)={4};
> Line(22)={5,9};
> Line(23)={9,4};
> Line(24)={4,5};
> Line Loop(5)={22,23,24};
> Plane Surface(5)={5};
> Line(26)={5,4};
> Line(27)={4,3};
> Line(28)={3,2};
> Line(29)={2,6};
> Line(30)={6,5};
> Line Loop(6)={26,27,28,29,30};
> Plane Surface(6)={6};
> Line(32)={8,9};
> Line(33)={9,5};
> Line(34)={5,6};
> Line(35)={6,7};
> Line(36)={7,8};
> Line Loop(7)={32,33,34,35,36};
> Plane Surface(7)={7};
> Surface Loop(1)={1,2,3,4,5,6,7};
> Volume(1)={1};
>
> Point(10)={0.500000,0.500000,0.500000, Lc1};
> Point(11)={-0.500000,0.500000,0.500000, Lc1};
> Point(12)={0.500000,-0.375350,0.500000, Lc1};
> Point(13)={0.500000,0.500000,0.000000, Lc1};
> Point(14)={-0.500000,0.500000,0.000000, Lc1};
> Point(15)={-0.500000,-0.166426,-0.000000, Lc1};
> Point(16)={-0.500000,0.491911,0.500000, Lc1};
> Point(17)={0.500000,-0.500000,0.405330, Lc1};
> Point(18)={-0.457949,-0.202895,-0.000000, Lc1};
> Point(19)={0.500000,-0.500000,0.044740, Lc1};
> Point(20)={0.500000,-0.414996,-0.000000, Lc1};
> Point(21)={0.034849,-0.500000,0.098946, Lc1};
>
> Line(38)={16,11};
> Line(39)={11,10};
> Line(40)={10,12};
> Line(41)={12,16};
> Line Loop(8)={38,39,40,41};
> Plane Surface(8)={8};
> Line(43)={17,21};
> Line(44)={21,18};
> Line(45)={18,15};
> Line(46)={15,16};
> Line(47)={16,12};
> Line(48)={12,17};
> Line Loop(9)={43,44,45,46,47,48};
> Plane Surface(9)={9};
> Line(50)={14,15};
> Line(51)={15,18};
> Line(52)={18,20};
> Line(53)={20,13};
> Line(54)={13,14};
> Line Loop(10)={50,51,52,53,54};
> Plane Surface(10)={10};
> Line(56)={15,14};
> Line(57)={14,11};
> Line(58)={11,16};
> Line(59)={16,15};
> Line Loop(11)={56,57,58,59};
> Plane Surface(11)={11};
> Line(61)={14,13};
> Line(62)={13,10};
> Line(63)={10,11};
> Line(64)={11,14};
> Line Loop(12)={61,62,63,64};
> Plane Surface(12)={12};
> Line(66)={17,19};
> Line(67)={19,21};
> Line(68)={21,17};
> Line Loop(13)={66,67,68};
> Plane Surface(13)={13};
> Line(70)={13,20};
> Line(71)={20,19};
> Line(72)={19,17};
> Line(73)={17,12};
> Line(74)={12,10};
> Line(75)={10,13};
> Line Loop(14)={70,71,72,73,74,75};
> Plane Surface(14)={14};
> Line(77)={19,20};
> Line(78)={20,18};
> Line(79)={18,21};
> Line(80)={21,19};
> Line Loop(15)={77,78,79,80};
> Plane Surface(15)={15};
> Surface Loop(2)={8,9,10,11,12,13,14,15};
> Volume(2)={2};
>
> Point(22)={0.500000,-0.500000,-0.500000, Lc1};
> Point(23)={-0.457949,-0.202895,-0.000000, Lc1};
> Point(24)={-0.500000,-0.500000,-0.500000, Lc1};
> Point(25)={0.500000,-0.500000,0.044740, Lc1};
> Point(26)={0.500000,-0.414996,-0.000000, Lc1};
> Point(27)={0.500000,-0.212319,-0.500000, Lc1};
> Point(28)={0.034849,-0.500000,0.098946, Lc1};
> Point(29)={-0.500000,0.009092,-0.500000, Lc1};
> Point(30)={-0.500000,-0.191355,-0.005499, Lc1};
> Point(31)={-0.500000,-0.500000,0.060293, Lc1};
>
> Line(82)={27,29};
> Line(83)={29,24};
> Line(84)={24,22};
> Line(85)={22,27};
> Line Loop(16)={82,83,84,85};
> Plane Surface(16)={16};
> Line(87)={29,30};
> Line(88)={30,31};
> Line(89)={31,24};
> Line(90)={24,29};
> Line Loop(17)={87,88,89,90};
> Plane Surface(17)={17};
> Line(92)={25,22};
> Line(93)={22,24};
> Line(94)={24,31};
> Line(95)={31,28};
> Line(96)={28,25};
> Line Loop(18)={92,93,94,95,96};
> Plane Surface(18)={18};
> Line(98)={30,23};
> Line(99)={23,28};
> Line(100)={28,31};
> Line(101)={31,30};
> Line Loop(19)={98,99,100,101};
> Plane Surface(19)={19};
> Line(103)={26,23};
> Line(104)={23,30};
> Line(105)={30,29};
> Line(106)={29,27};
> Line(107)={27,26};
> Line Loop(20)={103,104,105,106,107};
> Plane Surface(20)={20};
> Line(109)={25,26};
> Line(110)={26,27};
> Line(111)={27,22};
> Line(112)={22,25};
> Line Loop(21)={109,110,111,112};
> Plane Surface(21)={21};
> Line(114)={23,26};
> Line(115)={26,25};
> Line(116)={25,28};
> Line(117)={28,23};
> Line Loop(22)={114,115,116,117};
> Plane Surface(22)={22};
> Surface Loop(3)={16,17,18,19,20,21,22};
> Volume(3)={3};
>
> Point(32)={0.500000,-0.375350,0.500000, Lc1};
> Point(33)={-0.500000,-0.166426,-0.000000, Lc1};
> Point(34)={-0.500000,0.491911,0.500000, Lc1};
> Point(35)={-0.500000,-0.500000,0.500000, Lc1};
> Point(36)={0.500000,-0.500000,0.500000, Lc1};
> Point(37)={0.500000,-0.500000,0.405330, Lc1};
> Point(38)={-0.457949,-0.202895,-0.000000, Lc1};
> Point(39)={0.034849,-0.500000,0.098946, Lc1};
> Point(40)={-0.500000,-0.191355,-0.005499, Lc1};
> Point(41)={-0.500000,-0.500000,0.060293, Lc1};
>
> Line(119)={36,35};
> Line(120)={35,34};
> Line(121)={34,32};
> Line(122)={32,36};
> Line Loop(23)={119,120,121,122};
> Plane Surface(23)={23};
> Line(124)={41,40};
> Line(125)={40,33};
> Line(126)={33,34};
> Line(127)={34,35};
> Line(128)={35,41};
> Line Loop(24)={124,125,126,127,128};
> Plane Surface(24)={24};
> Line(130)={37,36};
> Line(131)={36,32};
> Line(132)={32,37};
> Line Loop(25)={130,131,132};
> Plane Surface(25)={25};
> Line(134)={37,39};
> Line(135)={39,41};
> Line(136)={41,35};
> Line(137)={35,36};
> Line(138)={36,37};
> Line Loop(26)={134,135,136,137,138};
> Plane Surface(26)={26};
> Line(140)={38,33};
> Line(141)={33,40};
> Line(142)={40,38};
> Line Loop(27)={140,141,142};
> Plane Surface(27)={27};
> Line(144)={33,38};
> Line(145)={38,39};
> Line(146)={39,37};
> Line(147)={37,32};
> Line(148)={32,34};
> Line(149)={34,33};
> Line Loop(28)={144,145,146,147,148,149};
> Plane Surface(28)={28};
> Line(151)={39,38};
> Line(152)={38,40};
> Line(153)={40,41};
> Line(154)={41,39};
> Line Loop(29)={151,152,153,154};
> Plane Surface(29)={29};
> Surface Loop(4)={23,24,25,26,27,28,29};
> Volume(4)={4};
>
> Field[1] = Attractor;
> Field[1].NNodesByEdge = 100;
> Field[1].EdgesList = {1:155};
> Field[2] = Threshold;
> Field[2].IField = 1;
> Field[2].LcMin = 0.010000;
> Field[2].LcMax = 0.200000;
> Field[2].DistMin = 0.010000;
> Field[2].DistMax = 0.100000;
> Mesh.CharacteristicLengthExtendFromBoundary = 0.;
> Background Field = 2;
> Coherence;
>
>
> _______________________________________________
> gmsh mailing list
> [email protected]
> http://www.geuz.org/mailman/listinfo/gmsh
--
Prof. Christophe Geuzaine
University of Liege, Electrical Engineering and Computer Science
http://www.montefiore.ulg.ac.be/~geuzaine
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