[Nek5000-users] Generating a 2D circular mesh

[nek5000-users at lists.mcs.anl.gov]

Hi Neks,

I'm having a little trouble with my first foray into circular geometries. I
tried to construct a 2D annular mesh using genbox with the following .box
file:

-----------------------------------------------------------------------
an.rea
 2                     spatial dimension
 2                     number of fields
Y
-4  -12          nelr,nel_theta
0 0              x0 y0
ccbb
1 2 1
0 1 1
SYM,SYM,         V bc's  ! NB:  3 characters each !
f  ,f  ,         T bc's  !      You must have 2 spaces!!
-----------------------------------------------------------------------

genbox seems to work properly, with the exception of the fact that nothing
after the boundary data gets copied over from the old .rea file.  Nonethess,
I copy that chunk over manually and run nek5000, which exits with the
following error:

  WARNINGa: Detected non-right-handed element.
  Number       1  C1-4:  0.6667E+00  0.8333E+00 -0.2083E+00 -0.4167E-01


Any guidance would be much appreciated.

Best,

David
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