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?
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;
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