# [Gmsh] Boundary Layer of a Finite Wing

Jaime Vázquez jvbustelo at gmail.com
Tue Jun 28 16:39:29 CEST 2016

```Dear All,

I have been able to obtain a BL using the BL command on GMSH on an infinite
wing (two close symmetry boundaries and the airfoil extruding all the way
between them). You can see it in the attachments of the NACA0012 which are
from a file I found on a forum.

However I want to obtain a BL in a finite wing (with the tip ending inside
the domain) and I haven't been able. I have been trying with the geometry
of the Onera M6 tutorial of SU2. I attach the geometry that I am trying to
use. Could someone tell me if it's possible to obtain the BL in a finite
wing? Any other way of doing it apart from the BL command?

I have tried every combination of edges and points. My best guess would be
to extend the BL on the straight part of the wing until the tip itself
starts, where unstructured mesh could be easier...
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//Define Foil Coordinates (160pts)
Point(1) = { 1.000000, 0.001260, 0.0000000, 0.002};
Point(2) = { 0.993720, 0.002140, 0.0000000, 0.002};
Point(3) = { 0.982780, 0.003650, 0.0000000, 0.002};
Point(4) = { 0.969990, 0.005390, 0.0000000, 0.002};
Point(5) = { 0.955670, 0.007320, 0.0000000, 0.002};
Point(6) = { 0.940260, 0.009340, 0.0000000, 0.002};
Point(7) = { 0.924220, 0.011420, 0.0000000, 0.002};
Point(8) = { 0.907840, 0.013500, 0.0000000, 0.002};
Point(9) = { 0.891280, 0.015560, 0.0000000, 0.002};
Point(10) = { 0.874620, 0.017590, 0.0000000, 0.002};
Point(11) = { 0.857930, 0.019590, 0.0000000, 0.002};
Point(12) = { 0.841200, 0.021550, 0.0000000, 0.002};
Point(13) = { 0.824460, 0.023480, 0.0000000, 0.002};
Point(14) = { 0.807710, 0.025370, 0.0000000, 0.002};
Point(15) = { 0.790950, 0.027230, 0.0000000, 0.002};
Point(16) = { 0.774190, 0.029050, 0.0000000, 0.002};
Point(17) = { 0.757420, 0.030830, 0.0000000, 0.002};
Point(18) = { 0.740660, 0.032570, 0.0000000, 0.002};
Point(19) = { 0.723890, 0.034280, 0.0000000, 0.002};
Point(20) = { 0.707120, 0.035940, 0.0000000, 0.002};
Point(21) = { 0.690350, 0.037570, 0.0000000, 0.002};
Point(22) = { 0.673590, 0.039160, 0.0000000, 0.002};
Point(23) = { 0.656830, 0.040710, 0.0000000, 0.002};
Point(24) = { 0.640080, 0.042210, 0.0000000, 0.002};
Point(25) = { 0.623330, 0.043670, 0.0000000, 0.002};
Point(26) = { 0.606590, 0.045090, 0.0000000, 0.002};
Point(27) = { 0.589870, 0.046460, 0.0000000, 0.002};
Point(28) = { 0.573150, 0.047780, 0.0000000, 0.002};
Point(29) = { 0.556450, 0.049050, 0.0000000, 0.002};
Point(30) = { 0.539760, 0.050270, 0.0000000, 0.002};
Point(31) = { 0.523090, 0.051430, 0.0000000, 0.002};
Point(32) = { 0.506440, 0.052530, 0.0000000, 0.002};
Point(33) = { 0.489800, 0.053570, 0.0000000, 0.002};
Point(34) = { 0.473190, 0.054550, 0.0000000, 0.002};
Point(35) = { 0.456610, 0.055460, 0.0000000, 0.002};
Point(36) = { 0.440040, 0.056310, 0.0000000, 0.002};
Point(37) = { 0.423510, 0.057070, 0.0000000, 0.002};
Point(38) = { 0.407010, 0.057760, 0.0000000, 0.002};
Point(39) = { 0.390550, 0.058370, 0.0000000, 0.002};
Point(40) = { 0.374120, 0.058890, 0.0000000, 0.002};
Point(41) = { 0.357740, 0.059320, 0.0000000, 0.002};
Point(42) = { 0.341400, 0.059650, 0.0000000, 0.002};
Point(43) = { 0.325110, 0.059880, 0.0000000, 0.002};
Point(44) = { 0.308880, 0.060000, 0.0000000, 0.002};
Point(45) = { 0.292720, 0.060010, 0.0000000, 0.002};
Point(46) = { 0.276620, 0.059890, 0.0000000, 0.002};
Point(47) = { 0.260600, 0.059650, 0.0000000, 0.002};
Point(48) = { 0.244670, 0.059270, 0.0000000, 0.002};
Point(49) = { 0.228840, 0.058750, 0.0000000, 0.002};
Point(50) = { 0.213130, 0.058070, 0.0000000, 0.002};
Point(51) = { 0.197550, 0.057230, 0.0000000, 0.002};
Point(52) = { 0.182140, 0.056220, 0.0000000, 0.002};
Point(53) = { 0.166930, 0.055030, 0.0000000, 0.002};
Point(54) = { 0.151960, 0.053650, 0.0000000, 0.002};
Point(55) = { 0.137300, 0.052070, 0.0000000, 0.002};
Point(56) = { 0.123030, 0.050290, 0.0000000, 0.002};
Point(57) = { 0.109290, 0.048320, 0.0000000, 0.002};
Point(58) = { 0.096220, 0.046180, 0.0000000, 0.002};
Point(59) = { 0.083990, 0.043890, 0.0000000, 0.002};
Point(60) = { 0.072780, 0.041500, 0.0000000, 0.002};
Point(61) = { 0.062710, 0.039080, 0.0000000, 0.002};
Point(62) = { 0.053800, 0.036670, 0.0000000, 0.002};
Point(63) = { 0.046030, 0.034310, 0.0000000, 0.002};
Point(64) = { 0.039290, 0.032030, 0.0000000, 0.002};
Point(65) = { 0.033460, 0.029830, 0.0000000, 0.002};
Point(66) = { 0.028400, 0.027710, 0.0000000, 0.002};
Point(67) = { 0.023990, 0.025660, 0.0000000, 0.002};
Point(68) = { 0.020130, 0.023670, 0.0000000, 0.002};
Point(69) = { 0.016740, 0.021730, 0.0000000, 0.002};
Point(70) = { 0.013760, 0.019820, 0.0000000, 0.002};
Point(71) = { 0.011140, 0.017930, 0.0000000, 0.002};
Point(72) = { 0.008830, 0.016060, 0.0000000, 0.002};
Point(73) = { 0.006820, 0.014190, 0.0000000, 0.002};
Point(74) = { 0.005080, 0.012310, 0.0000000, 0.002};
Point(75) = { 0.003600, 0.010410, 0.0000000, 0.002};
Point(76) = { 0.002380, 0.008510, 0.0000000, 0.002};
Point(77) = { 0.001410, 0.006590, 0.0000000, 0.002};
Point(78) = { 0.000700, 0.004670, 0.0000000, 0.002};
Point(79) = { 0.000250, 0.002770, 0.0000000, 0.002};
Point(80) = { 0.000030, 0.000910, 0.0000000, 0.002};
Point(81) = { 0.000030, -0.000910, 0.0000000, 0.002};
Point(82) = { 0.000250, -0.002770, 0.0000000, 0.002};
Point(83) = { 0.000700, -0.004670, 0.0000000, 0.002};
Point(84) = { 0.001410, -0.006590, 0.0000000, 0.002};
Point(85) = { 0.002380, -0.008510, 0.0000000, 0.002};
Point(86) = { 0.003600, -0.010410, 0.0000000, 0.002};
Point(87) = { 0.005080, -0.012310, 0.0000000, 0.002};
Point(88) = { 0.006820, -0.014190, 0.0000000, 0.002};
Point(89) = { 0.008830, -0.016060, 0.0000000, 0.002};
Point(90) = { 0.011140, -0.017930, 0.0000000, 0.002};
Point(91) = { 0.013760, -0.019820, 0.0000000, 0.002};
Point(92) = { 0.016740, -0.021730, 0.0000000, 0.002};
Point(93) = { 0.020130, -0.023670, 0.0000000, 0.002};
Point(94) = { 0.023990, -0.025660, 0.0000000, 0.002};
Point(95) = { 0.028400, -0.027710, 0.0000000, 0.002};
Point(96) = { 0.033460, -0.029830, 0.0000000, 0.002};
Point(97) = { 0.039300, -0.032030, 0.0000000, 0.002};
Point(98) = { 0.046030, -0.034310, 0.0000000, 0.002};
Point(99) = { 0.053800, -0.036670, 0.0000000, 0.002};
Point(100) = { 0.062710, -0.039080, 0.0000000, 0.002};
Point(101) = { 0.072780, -0.041500, 0.0000000, 0.002};
Point(102) = { 0.083990, -0.043890, 0.0000000, 0.002};
Point(103) = { 0.096220, -0.046180, 0.0000000, 0.002};
Point(104) = { 0.109290, -0.048320, 0.0000000, 0.002};
Point(105) = { 0.123030, -0.050290, 0.0000000, 0.002};
Point(106) = { 0.137300, -0.052070, 0.0000000, 0.002};
Point(107) = { 0.151960, -0.053650, 0.0000000, 0.002};
Point(108) = { 0.166930, -0.055030, 0.0000000, 0.002};
Point(109) = { 0.182140, -0.056220, 0.0000000, 0.002};
Point(110) = { 0.197550, -0.057230, 0.0000000, 0.002};
Point(111) = { 0.213130, -0.058070, 0.0000000, 0.002};
Point(112) = { 0.228840, -0.058750, 0.0000000, 0.002};
Point(113) = { 0.244670, -0.059270, 0.0000000, 0.002};
Point(114) = { 0.260600, -0.059650, 0.0000000, 0.002};
Point(115) = { 0.276620, -0.059890, 0.0000000, 0.002};
Point(116) = { 0.292720, -0.060010, 0.0000000, 0.002};
Point(117) = { 0.308880, -0.060000, 0.0000000, 0.002};
Point(118) = { 0.325110, -0.059880, 0.0000000, 0.002};
Point(119) = { 0.341400, -0.059650, 0.0000000, 0.002};
Point(120) = { 0.357740, -0.059320, 0.0000000, 0.002};
Point(121) = { 0.374120, -0.058890, 0.0000000, 0.002};
Point(122) = { 0.390550, -0.058370, 0.0000000, 0.002};
Point(123) = { 0.407010, -0.057760, 0.0000000, 0.002};
Point(124) = { 0.423510, -0.057070, 0.0000000, 0.002};
Point(125) = { 0.440040, -0.056310, 0.0000000, 0.002};
Point(126) = { 0.456610, -0.055460, 0.0000000, 0.002};
Point(127) = { 0.473190, -0.054550, 0.0000000, 0.002};
Point(128) = { 0.489800, -0.053570, 0.0000000, 0.002};
Point(129) = { 0.506440, -0.052530, 0.0000000, 0.002};
Point(130) = { 0.523090, -0.051430, 0.0000000, 0.002};
Point(131) = { 0.539760, -0.050270, 0.0000000, 0.002};
Point(132) = { 0.556450, -0.049050, 0.0000000, 0.002};
Point(133) = { 0.573150, -0.047780, 0.0000000, 0.002};
Point(134) = { 0.589870, -0.046460, 0.0000000, 0.002};
Point(135) = { 0.606590, -0.045090, 0.0000000, 0.002};
Point(136) = { 0.623330, -0.043670, 0.0000000, 0.002};
Point(137) = { 0.640080, -0.042210, 0.0000000, 0.002};
Point(138) = { 0.656830, -0.040710, 0.0000000, 0.002};
Point(139) = { 0.673590, -0.039160, 0.0000000, 0.002};
Point(140) = { 0.690350, -0.037570, 0.0000000, 0.002};
Point(141) = { 0.707120, -0.035940, 0.0000000, 0.002};
Point(142) = { 0.723890, -0.034280, 0.0000000, 0.002};
Point(143) = { 0.740660, -0.032570, 0.0000000, 0.002};
Point(144) = { 0.757420, -0.030830, 0.0000000, 0.002};
Point(145) = { 0.774190, -0.029050, 0.0000000, 0.002};
Point(146) = { 0.790950, -0.027230, 0.0000000, 0.002};
Point(147) = { 0.807710, -0.025370, 0.0000000, 0.002};
Point(148) = { 0.824460, -0.023480, 0.0000000, 0.002};
Point(149) = { 0.841200, -0.021550, 0.0000000, 0.002};
Point(150) = { 0.857930, -0.019590, 0.0000000, 0.002};
Point(151) = { 0.874620, -0.017590, 0.0000000, 0.002};
Point(152) = { 0.891280, -0.015560, 0.0000000, 0.002};
Point(153) = { 0.907840, -0.013500, 0.0000000, 0.002};
Point(154) = { 0.924220, -0.011420, 0.0000000, 0.002};
Point(155) = { 0.940260, -0.009340, 0.0000000, 0.002};
Point(156) = { 0.955670, -0.007320, 0.0000000, 0.002};
Point(157) = { 0.969990, -0.005390, 0.0000000, 0.002};
Point(158) = { 0.982780, -0.003650, 0.0000000, 0.002};
Point(159) = { 0.993720, -0.002140, 0.0000000, 0.002};
Point(160) = { 1.000000, -0.001260, 0.0000000, 0.002};

//Define bounding box corners
Point(1001) = { 6.000000, 3.000000, 0.0000000, 1.0};
Point(1002) = { 6.000000, -3.000000, 0.0000000, 1.0};
Point(1003) = { -3.000000, -3.000000, 0.0000000, 1.0};
Point(1004) = { -3.000000, 3.000000, 0.0000000, 1.0};

//Define bounding box edges
Line(1) = {1001, 1002};
Line(2) = {1002, 1003};
Line(3) = {1003, 1004};
Line(4) = {1004, 1001};

//Define bounding box outer boundary
Line Loop(101) = {1, 2, 3, 4};

//Define foil spline and trailing edge
Spline(5) = {1:160};
Line(6) = {160, 1};

//Define foil boundary
Line Loop(102) = {5, 6};

//Define unstructured far field mesh zone
Plane Surface(201) = {101, 102};

//Extrude unstructured far field mesh
Extrude {0, 0, 1} {
Surface {201};
Layers{1};
Recombine;
}

//Define physical surfaces - numeric designations from GUI
Physical Surface("back") = {201};
Physical Surface("front") = {233};
Physical Surface("top") = {224};
Physical Surface("bottom") = {216};
Physical Surface("inlet") = {220};
Physical Surface("outlet") = {212};
Physical Surface("foil") = {228, 232};

//Define physical volumes - numeric designations from GUI
Physical Volume("internal") = {1};

//Define Boundary Layer
Field[1] = BoundaryLayer;
Field[1].EdgesList = {5, 227, 208, -226, 206, 6};
Field[1].NodesList = {1,1021, 1022, 160};
Field[1].FacesList = {232, 228};
Field[1].FanNodesList = {1,1021, 1022, 160};
Field[1].FansList = {5, 6};
Field[1].hfar = 0.05;
Field[1].hwall_n = 0.0005;
Field[1].thickness = 0.02;
Field[1].ratio = 1.1;
Field[1].AnisoMax = 10;