[levvis]

Good day all

I have created the MH45 aerofoil in Gmsh and extruded it in one cell in the Z-Direction.

I've checked mesh and it seems fine but upon viewing it in Paraview, the leading edge of the aerofoil is missing, but it is definitely there when viewed in Gmsh.

I am aware the mesh isn't very dense, but I'll refine this later.

Please find a screenshot attached, and the .geo file below.

PHP Code:

cl__1 = 1;

Point(1) = {1, 0, 0, 1};
Point(2) = {0.99669413, -9.724e-05, 0, 1};
Point(3) = {0.98669781, -0.00019095, 0, 1};
Point(4) = {0.97014283, 0.00019409, 0, 1};
Point(5) = {0.94748143, 0.00135847, 0, 1};
Point(6) = {0.91919309, 0.00340462, 0, 1};
Point(7) = {0.88577724, 0.00640631, -0, 1};
Point(8) = {0.84779269, 0.01043465, -0, 1};
Point(9) = {0.80595479, 0.01555735, -0, 1};
Point(10) = {0.76114118, 0.02164179, -0, 1};
Point(11) = {0.71412902, 0.02832714, -0, 1};
Point(12) = {0.66556275, 0.03522557, -0, 1};
Point(13) = {0.61598156, 0.04192939, -0, 1};
Point(14) = {0.56581124, 0.04811779, -0, 1};
Point(15) = {0.51545926, 0.05355525, -0, 1};
Point(16) = {0.46531057, 0.05809451, -0, 1};
Point(17) = {0.41579675, 0.0616687, -0, 1};
Point(18) = {0.36739295, 0.06421657, -0, 1};
Point(19) = {0.3205639, 0.06566967, 0, 1};
Point(20) = {0.27575978, 0.06596488, 0, 1};
Point(21) = {0.2333716, 0.06502718, 0, 1};
Point(22) = {0.19371735, 0.06284772, 0, 1};
Point(23) = {0.15710619, 0.05947508, 0, 1};
Point(24) = {0.12382631, 0.05499062, 0, 1};
Point(25) = {0.06832228, 0.04312532, 0, 1};
Point(26) = {0.06832228, 0.04312532, 0, 1};
Point(27) = {0.04653066, 0.03596944, 0, 1};
Point(28) = {0.02886429, 0.02820312, 0, 1};
Point(29) = {0.01538529, 0.02006247, 0, 1};
Point(30) = {0.00606648, 0.01189423, 0, 1};
Point(31) = {0.00125239, 0.00490321, 0, 1};
Point(32) = {0.00045775, 0.00277441, 0, 1};
Point(33) = {5.213e-05, 0.00080294, 0, 1};
Point(34) = {1.426e-05, -0.00039622, 0, 1};
Point(35) = {0.00021828, -0.00145465, 0, 1};
Point(36) = {0.00074788, -0.00243613, 0, 1};
Point(37) = {0.00159709, -0.00343572, 0, 1};
Point(38) = {0.00334092, -0.00496578, 0, 1};
Point(39) = {0.00559484, -0.00653095, 0, 1};
Point(40) = {0.01774266, -0.01220386, 0, 1};
Point(41) = {0.03414149, -0.01725442, 0, 1};
Point(42) = {0.05524391, -0.0219099, 0, 1};
Point(43) = {0.08078, -0.02593921, 0, 1};
Point(44) = {0.08078, -0.02593921, 0, 1};
Point(45) = {0.11057454, -0.02909277, 0, 1};
Point(46) = {0.14453398, -0.0312784, 0, 1};
Point(47) = {0.18244547, -0.03254149, 0, 1};
Point(48) = {0.22401044, -0.03295264, 0, 1};
Point(49) = {0.3164713, -0.03166069, 0, 1};
Point(50) = {0.3664005, -0.03015443, 0, 1};
Point(51) = {0.41809871, -0.0282151, 0, 1};
Point(52) = {0.57780845, -0.0210498, 0, 1};
Point(53) = {0.68169412, -0.01611128, 0, 1};
Point(54) = {0.7309136899999999, -0.01378344, 0, 1};
Point(55) = {0.77750335, -0.01158878, 0, 1};
Point(56) = {0.82090623, -0.009547109999999999, 0, 1};
Point(58) = {0.89604838, -0.00604251, 0, 1};
Point(59) = {0.92683839, -0.00458535, 0, 1};
Point(60) = {0.95257077, -0.00330256, 0, 1};
Point(61) = {0.97292132, -0.00217128, 0, 1};
Point(62) = {0.98768944, -0.0011255, 0, 1};
Point(63) = {0.99683205, -0.00030439, 0, 1};
Point(64) = {1, 0, 0, 1};
Point(65) = {1, 0, 0, 1};

Point(73) = {-4, 4, 0, 1};
Point(74) = {20, 4, 0, 1};
Point(75) = {-4, -4, 0, 1};
Point(76) = {20, -4, 0, 1};

Spline(100) = {1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56, 58, 59, 60, 61, 62, 63, 1, 1};

Line(4) = {73, 74};
Line(5) = {74, 76};
Line(6) = {76, 75};
Line(7) = {75, 73};

Line Loop (1) = {4,5,6,7};
Line Loop (2) = {100};

Plane Surface(1) = {1,2};

Extrude {0, 0, 1}
  {
  Surface {1};
  Layers {1};
  Recombine;
  }

Physical Surface("aerofoil") = {126};
Physical Surface("inlet") = {122};
Physical Surface("outlet") = {114};
Physical Surface("front") = {127};
Physical Surface("back") = {1};
Physical Surface("top") = {110};
Physical Surface("bottom") = {118};

Physical Volume(128) = {1}; 


Any ideas would be greatly appreciated

[levvis]

Please find a couple more screenshots attached. The meshed screenshot is the simplified geometry and the unmeshed one is the desired geometry for the aerofoil.
Excuse the extended screenshot, using a HDMI to my TV.

Just to make sure my method is correct, I created a simplified geometry and after meshing and converting to OpenFOAM, it works.

Therefore I really am stuck trying to understand where I'm going wrong with the MH45 airfoil and why it's becoming just a triangle, post mesh

Any ideas?

Thanks in advance.