The question was redirected to GMSH-developers. They gave the following
answer [1]:
================================================================
You should extrude with an angle strictly smaller than Pi.
Otherwise, there is a problem with indetermination.
Try:
// foil parameters
r1 = 2.0;
d = 0.1;
r2 = r1 + d;
// size parameters
h1 = 4.0;
h2 = 10.0;
b = 2*r2*1.1;
// Mesh
lc = 2*d;
lv = 5;
p1 = newp; Point(p1) = {r1 , 0, h1+d, lc};
wall[] = Extrude {0, 0, h2-h1-2*d} { Point{ p1 }; Layers{ lv }; };
wall1[] = Extrude { {0, 0, 1}, {0, 0, 0},Pi/2 } { Line { wall[1] }; };
wall2[] = Extrude { {0, 0, 1}, {0, 0, 0}, Pi/2 } { Line { wall1[0] }; };
wall3[] = Extrude { {0, 0, 1}, {0, 0, 0},-Pi/2 } { Line { wall[1] }; };
wall4[] = Extrude { {0, 0, 1}, {0, 0, 0},-Pi/2 } { Line { wall3[0] }; };
Regards,
Ruth
--
Dr. Ir. Ruth V. Sabariego
================================================================
Please, close the bug, if the problem is solved.
[1] http://geuz.org/pipermail/gmsh/2011/006829.html
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https://bugs.launchpad.net/bugs/886607
Title:
Segmentation fault on extrude
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