[Nek5000-users] Nekmerge question

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

Jean-Christophe,

One approach to merging is to use the pretex (tex-based prex) code.
Basic steps are listed below, with entries indicated by "> "

Paul

  Choose a Name for This Session:
> s
   Beginning Session s
        1 READ PREVIOUS PARAMETERS
        2 TYPE IN  NEW  PARAMETERS
        3 CONJ. HEAT TRANSFER MERGE
Choose item:
> 1
  Enter name of previous session
> s2
        1 BUILD FROM FILE
        2 ALTER PARAMETERS
        3 SHOW PARAMETERS
        4 BUILD INTERACTIVELY 
> 1
Choose item:
  Enter name of previous session
(Default= s2.rea           )
> s2
        1 END    ELEMENTS
        2 MODIFY ELEMENT
        3 GLOBAL REFINE
        4 UP   LEVEL
        5 DOWN LEVEL
        6 CURVE SIDES
        7 DELETE ELEMENT
        8 CEILING
        9 REDRAW MESH
       10 SET GRID
       11 ZOOM
       12 IMPORT MESH
       13 IMPORT vtx MESH
       14 IMPORT vtk MESH
       15 REFLECT MESH
       16 DEFINE OBJECT 
Choose item:
> 12
input name of new .rea file
s3
Would you like to displace existing elements in box?
> n
        1 END    ELEMENTS
        2 MODIFY ELEMENT
        3 GLOBAL REFINE
        4 UP   LEVEL
        5 DOWN LEVEL
        6 CURVE SIDES
        7 DELETE ELEMENT
        8 CEILING
        9 REDRAW MESH
       10 SET GRID
       11 ZOOM
       12 IMPORT MESH
       13 IMPORT vtx MESH
       14 IMPORT vtk MESH
       15 REFLECT MESH
       16 DEFINE OBJECT 
Choose item:
> 1
        1 ACCEPT MATL,QVOL
        2 SELECT ELEMENT
        3 SELECT MATL [  0]
        4 SET  MATL PROPS,Q
        5 SHOW MATL PROPS,Q 
Choose item:
> 1
        1 ACCEPT B.C.'s
        2 REVIEW/MODIFY 
Choose item:
> 1
Curve side consistency check OK.
        1 ACCEPT B.C.'s
        2 REVIEW/MODIFY 
Choose item:
> 1
Curve side consistency check OK.
  Generating Mesh Points for       840  Elements
        1 EXIT
        2 OUTPUT
        3 DRIVE FORCE
        4 INITIAL COND
        5 INTEGRAL QUANTITY
        6 OBJECT
        7 ZOOM 
Choose item:
> 1
Writing Parameters to file
Deleting tmp.* files.


On Thu, 22 Apr 2010, nek5000-users at lists.mcs.anl.gov wrote:

> Hello all,
>
> I know there already exists a thread having the same title dating back to 
> November 2009, but no one has answered to it yet.
> I also have some question regarding nekmerge.
>
> I would like to mesh the cross-section of a cylindrical pipe. Using the 
> cylindrical version of genbox, I obviously get into troubles as soon as I 
> include the axis.
> As a consequence, I would like to merge two meshes:
>   - a cartesian one in the vicinity of the axis
>   - a cylindrical one for the rest of the pipe
>
> Once I genboxed the corresponding .box files, I use nekmerge and there comes 
> my problem. I get the following error message:
>
> [loiseau at Quadstation-01 cylindre]$ ./nekmerge
> ascii or binary output ? (a/b):
> a
> Input new (output) file name:
> cylindre
> Input source .rea file name or press enter to continue:
> 1
> Input source .rea file name or press enter to continue:
> 2
> Input source .rea file name or press enter to continue:
>
> locglob:           1           1           1         324
> locglob:           1           2         214         324
> locglob:           2           1         289         324
> locglob:           2           2         289         324
> done locglob_lexico:      290      290      324
> FACE ERROR:           5           3         108           5
>
> Attached are all the .box and .rea files I have used. Could anyone give me a 
> hint on how to solve this little problem ?
>
> Regards,
>
> Jean-Christophe
>