[mustafaiqbal]

Hello!

I previously posted on the Elmer forum to seek help on this issue, and was told that my issue lies in GMSH.

I am generating a mesh which is very fine at a certain point, when I load this mesh into ElmerSolver and run the solver I get degenerate element errors. On reconverting the Elmer mesh to GMSH .msh and investigating, I see those degenerate elements.

Please see attached the .msh before input to Elmer, and the .msh after I convert it back from the Elmer format.

Here is the .geo code:

//+
Point(1) = {0, 0, 0, 1.0};
//+
Point(3) = {0, 11.45, 0, 1.0};
//+
Point(4) = {0, 22.9, 0, 1.0};
//+
Point(6) = {0.5, 0, 0, 1.0};
//+
Point(7) = {0.75, 0, 0, 1.0};
//+
Point(8) = {0.75, 22.9, 0, 1.0};
//+
Line(1) = {4, 3};
//+
Line(3) = {1, 6};
//+
Line(4) = {6, 7};
//+
Line(5) = {7, 8};
//+
Line(6) = {8, 4};
//+
Line(7) = {3, 6};
//+
Line(8) = {4, 3};
//+
Line(17) = {3, 1};
//+
Line Loop(9) = {8, 7, 4, 5, 6};
//+
Plane Surface(10) = {9};
//+
Characteristic Length {6, 7, 8, 4} = 0.1;
//+
Characteristic Length {3} = 10e-6;
//+
Physical Line(11) = {8};
//+
Physical Line(12) = {6};
//+
Physical Line(13) = {5};
//+
Physical Line(14) = {4};
//+
Physical Line(15) = {7};
//+
Physical Surface(16) = {10};
//+

Many thanks!
Mustafa.