<html>
<head>
<meta http-equiv="content-type" content="text/html; charset=ISO-8859-1">
</head>
<body bgcolor="#FFFFFF" text="#000000">
<meta http-equiv="CONTENT-TYPE" content="text/html;
charset=ISO-8859-1">
<p style="margin-bottom: 0cm">Dear Gmsh Development Team,<br>
<br>
<br>
My
name is George Ntemos and I am a PhD student in the Aeronautics
Department of Imperial College London. Our team is developing and
applying CFD software, using gmsh for high-order meshing purposes.</p>
<p style="margin-bottom: 0cm">I am currently studying a flow case
around a rod-aerofoil set-up and I've been experiencing some
problems
with high-order meshing. More specifically, the meshing algorithm
fails to mesh in high order around the (spline-defined) aerofoil
profile. Please find attached a lightweight .geo file of my
configuration just for demonstration purposes. If one tries
meshing
this file in 3d and for order > 1, gmsh will warn that, to my
understanding, the algorithm fails to properly converge at certain
points, visibly resulting in quite severe discrepancies for a few
elements (curvilinear on). It also warns that it cannot orient the
normal for the two extruded surfaces of the rod (cylinder)
boundary
layer. It is worth noting here that I am experiencing none of the
above problems when I am meshing in 2d. Since my 3d mesh is just a
simple extrusion, I would assume that extending to 3d is just a
trivial case of translating every operation along the 3<sup>rd</sup>
dimension. I am of course not particularly experienced in using
gmsh
however and I may very well be missing something here.</p>
<p style="margin-bottom: 0cm">Any help regarding these issues would
be greatly appreciated.</p>
<p style="margin-bottom: 0cm">Thank you for your time.</p>
<p style="margin-bottom: 0cm"><br>
</p>
<p style="margin-bottom: 0cm">Best regards,</p>
<p style="margin-bottom: 0cm">George</p>
<title></title>
<meta name="GENERATOR" content="LibreOffice 4.0.4.2 (Linux)">
<style type="text/css">
<!--
@page { margin: 2cm }
P { margin-bottom: 0.21cm }
-->
</style>
</body>
</html>