CFD Online Discussion Forums - Why is the boundary layer mesh failing for this gmsh mesh?

Hi, I am trying to mesh a 2D geometry using gmsh, with a boundary layer mesh applied to two of the edges. However, it seems to be failing, with results such as as following:

https://cloud.disroot.org/apps/files...pg&scalingup=0

The .geo file I am using is as follows:

Code:

element_size = 2.0000;

Point(1) = {0.7500, 0.0000, 0.0000, element_size};

Point(2) = {37.5000, 0.0000, 0.0000, element_size};

Point(3) = {37.5000, 40.0000, 0.0000, element_size};

Point(4) = {4.9, 40.0000, 0.0000, 0.05000};

Point(5) = {0.6, 25.448, 0.0000, 0.05000};

Point(6) = {0, 25.625, 0.0000, 0.05000};

Point(7) = {0.0000, 25.0000, 0.0000, 0.05000};

Point(8) = {0.0000, 24.7500, 0.0000, 0.2500};

Point(9) = {0.0000, 0.0000, 0.0000, 0.2500};



Line(10) = {1,2};

Line(11) = {2,3};

Line(12) = {3,4};

Line(13) = {4,5};

Circle(14) = {5,6,7};

Line(15) = {7,8};

Line(16) = {8,9};

Line(17) = {9,1};



Curve Loop(1) = {10,11,12,13,14,15,16,17};



Plane Surface(1) = {1};



//Boundary Layer

Field[1] = BoundaryLayer;

Field[1].AnisoMax = 1000;

Field[1].Quads = 1;

Field[1].Thickness = 0.2;

Field[1].CurvesList = {13,14};

Field[1].Ratio = 1.4;

Field[1].Size = 0.02;

Field[1].SizeFar = 0.2;

Field[1].IntersectMetrics = 1;



BoundaryLayer Field = 1;



Mesh.Algorithm = 6;

Recombine Surface {1};

Does anyone have any ideas why it is not working? I have tried playing with many of the boundary layer and sizing settings, but unfortunately nothing seems to work.