[Nek5000-users] mesh merging

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

Dear all,

I have decided a cylinder-box-transition mesh (box hole at centre), with
another mesh in box. I tried to use prenek to merge them, but the curved
side values vanish and error comes in -

2773     2     4  Matrix:  SELF!!
       1 SELF!!     1189     1377     1189     1377
       2 SELF!!     1360     1206     1360     1206
 cont: SELF!!        2773   ??

 ABORT: SELF-CHK            1           5        2773           0
 Try to tighten the mesh tolerance!
  3024     8    10  Matrix T:  slfchk     3024        0

Then I tried to check the meshes individually. I set up the BCs on prenek
and output a new .rea. Both works fine.

Again I tried another way out - nekmerge. It gives me error only when I
input the cylinder mesh -

At line 100 of file reader.f (unit = 10, file = 'box1.rea')
Fortran runtime error: Bad value during floating point read

Which was not encountered in box mesh.

Anyone knows the solution? Thank you very much.

Regards,
Simon
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