[Nek5000-users] prex question

Sun Nov 3 11:35:36 CST 2013

Hi Paul,

Thank you very much! Just need a confirm about your mesh.

  11 SET ENTIRE LEVEL
   1 PERIODIC-AUTO

means to set the periodic boundary condition for the box except the inlet
already set in fpcyl.box?

n Is this a lattice for hex-close-packed spheres?:

So the boundary condition for the circle will be set to walls
automatically?

Thank you!

Tubois

On Sun, Nov 3, 2013 at 5:46 PM, <nek5000-users at lists.mcs.anl.gov> wrote:

>
> Hi Tubois,
>
> I've just updated this example and have included a script that appears
> to work.
>
> I recommend moving your existing ext_cyl directory to, say, ext_cyl.1,
> and then svn update ext_cyl.
>
> Then, in the new ext_cyl directory you should be able to type:
>
> mkmesh
>
>
> The README file is also updated.  Have a look at mkmesh and you
> can see the basic steps.
>
> Paul
>
>
> ----- Original Message -----
> From: nek5000-users at lists.mcs.anl.gov
> To: nek5000-users at lists.mcs.anl.gov
> Sent: Sunday, November 3, 2013 10:00:17 AM
> Subject: [Nek5000-users] prex question
>
>
>
> Hello everyone,
>
>
> 1, I am trying to create the mesh of the example ext_cyl with genbox, and
> pretek. After consulting the email archives online, I almost got it works.
> The question lies on mesh-merging. I used pretex. The commands is listed as
> follows.
>
>
> I got a mesh ext_cyl.rea identical to the one in the example, when I
> visualized it with postx. However, when I use xxdiff to examine it, I found
> several differences.
> BOUNDARY CONDITIONS:
> FLUID BOUNDARY CONDITIONS:
> 11 0.00000 0.00000 .....
> For the file in the example, this line is
> P 11 1337.00 3.00000 ......
>
>
> So which step did I missed? To set the BC in pretek? Can someone gives a
> detailed command lines?
>
>
> 2, About creating the mesh, the wiki says that Nek5000 works with Moab
> Cubit, but this software is not free of charge. Is there any other free
> software for meshing? In the archive, I found the discussion about
> converting Gambit (we have Gambit in school) mesh to rea. The guy left an
> email address cmeador at tamu.edu , which is no more valid.
>
>
> Thank you very much!
>
>
> Best regards
>
>
> Tubois
> ==================================================================
>
>
> Choose a Name for This session:
> ext_cyl
>
> Beginning Session ext_cyl
> 1 READ PREVIOUS PARAMETERS
> 2 TYPE IN NEW PARAMETERS
> 3 CONJ. HEAT TRANSFER MERGE
> Choose item:
> 1
> 1
> Enter name of previous session
> box.rea
> 1 BUILD FROM FILE
> 2 BUILD INTERACTIVELY
> Choose item:
> 1
> 1
> Enter name of previous session
> (Default= box.rea )
> I pressed ENTER
>
>
>
> Will Read Mesh and B.C. data from box.rea
> Reading Element 29 [ 1C]
> Reading Element 58 [ 1f]
> Reading Element 87 [ 1I]
> Reading Element 116 [ 1l]
> Reading Element 145 [ 1O]
> Reading Element 174 [ 1r]
> Reading Element 203 [ 1U]
> Reading Element 232 [ 1x]
> Reading Element 261 [ 1a]
> Reading Element 290 [ 1D]
> Reading Element 319 [ 1g]
> Reading Element 348 [ 1J]
> Reading Element 377 [ 1m]
> Reading Element 406 [ 1P]
> Reading Element 435 [ 1s]
> Reading Element 464 [ 1V]
> Reading Element 493 [ 1y]
> Reading Element 522 [ 1b]
> Reading Element 551 [ 1E]
> Reading Element 580 [ 1h]
> Reading Element 609 [ 1K]
> Reading Element 638 [ 1n]
> Reading Element 667 [ 1Q]
> Reading Element 696 [ 1t]
> Reading Element 725 [ 1W]
> Reading Element 754 [ 1z]
> Reading Element 783 [ 1c]
> Reading Element 812 [ 1F]
> Reading Element 841 [ 1i]
> Reading Element 870 [ 1L]
> Reading Element 899 [ 1o]
> Reading Element 928 [ 1R]
> Reading Element 957 [ 1u]
> Reading Element 986 [ 1X]
> Reading Element 1015 [ 1A]
> Reading Element 1044 [ 1d]
> Reading Element 1073 [ 1G]
> Reading Element 1102 [ 1j]
> Reading Element 1131 [ 1M]
> Reading Element 1160 [ 1p]
> Reading Element 1189 [ 1S]
> Reading Element 1218 [ 1v]
> Reading Element 1247 [ 1Y]
> Reading Element 1276 [ 1B]
> Reading Element 1305 [ 1e]
> Reading Element 1334 [ 1H]
> Reading Element 1363 [ 1k]
> Reading Element 1392 [ 1N]
> Reading Element 1421 [ 1q]
> Reading Element 1450 [ 1T]
> drwobjs: 0
> Showing only 90 elements of 1456
> *** BUILD MENU ***
> inside gencen 1456 F 4
> done gencen 1456
> 1 END ELEMENTS
> 2 MODIFY ELEMENT
> 3 GLOBAL REFINE
> 4 CURVE SIDES
> 5 DELETE ELEMENT
> 6 ZOOM
> 7 SET GRID
> 8 DEFINE OBJECT
> 9 REDRAW MESH
> 10 IMPORT MESH
> 11 IMPORT VTK MESH
> 12 IMPORT vtx MESH
> 13 REFLECT MESH
> Choose item:
> 10
>
> 10
> input name of new .rea file
> import.rea
>
> Would you like to displace existing elements in box?
> y
>
> Found 80 curve sides.
> IFLD: 1 1 T F
> ***** FLUID BOUNDARY CONDITIONS *****
> ***** FLUID BOUNDARY CONDITIONS *****$
> This is nel,ncurve old: 1456 0
> This is nel,ncurve new: 1536 80
> inside gencen 1536 F 4
> done gencen 1536
> X min/max of new elements: -1.200000 1.200001
> Y min/max of new elements: -1.200000 1.200000
> NO KEEP: 514 F -1.0500000 -1.0500000 0.0000000
> NO KEEP: 515 F -0.75000000 -1.0500000 0.0000000
> NO KEEP: 516 F -0.45000002 -1.0500000 0.0000000
> NO KEEP: 517 F -0.15000001 -1.0500000 0.0000000
> NO KEEP: 518 F 0.15000001 -1.0500000 0.0000000
> NO KEEP: 519 F 0.45000002 -1.0500000 0.0000000
> NO KEEP: 520 F 0.75000000 -1.0500000 0.0000000
> NO KEEP: 521 F 1.0500000 -1.0500000 0.0000000
> NO KEEP: 570 F -1.0500000 -0.75000000 0.0000000
> NO KEEP: 571 F -0.75000000 -0.75000000 0.0000000
> NO KEEP: 572 F -0.45000002 -0.75000000 0.0000000
> NO KEEP: 573 F -0.15000001 -0.75000000 0.0000000
> NO KEEP: 574 F 0.15000001 -0.75000000 0.0000000
> NO KEEP: 575 F 0.45000002 -0.75000000 0.0000000
> NO KEEP: 576 F 0.75000000 -0.75000000 0.0000000
> NO KEEP: 577 F 1.0500000 -0.75000000 0.0000000
> NO KEEP: 626 F -1.0500000 -0.45000002 0.0000000
> NO KEEP: 627 F -0.75000000 -0.45000002 0.0000000
> NO KEEP: 628 F -0.45000002 -0.45000002 0.0000000
> NO KEEP: 629 F -0.15000001 -0.45000002 0.0000000
> NO KEEP: 630 F 0.15000001 -0.45000002 0.0000000
> NO KEEP: 631 F 0.45000002 -0.45000002 0.0000000
> NO KEEP: 632 F 0.75000000 -0.45000002 0.0000000
> NO KEEP: 633 F 1.0500000 -0.45000002 0.0000000
> NO KEEP: 682 F -1.0500000 -0.15000001 0.0000000
> NO KEEP: 683 F -0.75000000 -0.15000001 0.0000000
> NO KEEP: 684 F -0.45000002 -0.15000001 0.0000000
> NO KEEP: 685 F -0.15000001 -0.15000001 0.0000000
> NO KEEP: 686 F 0.15000001 -0.15000001 0.0000000
> NO KEEP: 687 F 0.45000002 -0.15000001 0.0000000
> NO KEEP: 688 F 0.75000000 -0.15000001 0.0000000
> NO KEEP: 689 F 1.0500000 -0.15000001 0.0000000
> NO KEEP: 738 F -1.0500000 0.15000001 0.0000000
> NO KEEP: 739 F -0.75000000 0.15000001 0.0000000
> NO KEEP: 740 F -0.45000002 0.15000001 0.0000000
> NO KEEP: 741 F -0.15000001 0.15000001 0.0000000
> NO KEEP: 742 F 0.15000001 0.15000001 0.0000000
> NO KEEP: 743 F 0.45000002 0.15000001 0.0000000
> NO KEEP: 744 F 0.75000000 0.15000001 0.0000000
> NO KEEP: 745 F 1.0500000 0.15000001 0.0000000
> NO KEEP: 794 F -1.0500000 0.45000002 0.0000000
> NO KEEP: 795 F -0.75000000 0.45000002 0.0000000
> NO KEEP: 796 F -0.45000002 0.45000002 0.0000000
> NO KEEP: 797 F -0.15000001 0.45000002 0.0000000
> NO KEEP: 798 F 0.15000001 0.45000002 0.0000000
> NO KEEP: 799 F 0.45000002 0.45000002 0.0000000
> NO KEEP: 800 F 0.75000000 0.45000002 0.0000000
> NO KEEP: 801 F 1.0500000 0.45000002 0.0000000
> NO KEEP: 850 F -1.0500000 0.75000000 0.0000000
> NO KEEP: 851 F -0.75000000 0.75000000 0.0000000
> NO KEEP: 852 F -0.45000002 0.75000000 0.0000000
> NO KEEP: 853 F -0.15000001 0.75000000 0.0000000
> NO KEEP: 854 F 0.15000001 0.75000000 0.0000000
> NO KEEP: 855 F 0.45000002 0.75000000 0.0000000
> NO KEEP: 856 F 0.75000000 0.75000000 0.0000000
> NO KEEP: 857 F 1.0500000 0.75000000 0.0000000
> NO KEEP: 906 F -1.0500000 1.0500000 0.0000000
> NO KEEP: 907 F -0.75000000 1.0500000 0.0000000
> NO KEEP: 908 F -0.45000002 1.0500000 0.0000000
> NO KEEP: 909 F -0.15000001 1.0500000 0.0000000
> NO KEEP: 910 F 0.15000001 1.0500000 0.0000000
> NO KEEP: 911 F 0.45000002 1.0500000 0.0000000
> NO KEEP: 912 F 0.75000000 1.0500000 0.0000000
> NO KEEP: 913 F 1.0500000 1.0500000 0.0000000
> Deleting element 514 of 1536.
> Deleting element 515 of 1536.
> Deleting element 516 of 1536.
> Deleting element 517 of 1536.
> Deleting element 518 of 1536.
> Deleting element 519 of 1536.
> Deleting element 520 of 1536.
> Deleting element 521 of 1536.
> Deleting element 570 of 1536.
> Deleting element 571 of 1536.
> Deleting element 572 of 1536.
> Deleting element 573 of 1536.
> Deleting element 574 of 1536.
> Deleting element 575 of 1536.
> Deleting element 576 of 1536.
> Deleting element 577 of 1536.
> Deleting element 626 of 1536.
> Deleting element 627 of 1536.
> Deleting element 628 of 1536.
> Deleting element 629 of 1536.
> Deleting element 630 of 1536.
> Deleting element 631 of 1536.
> Deleting element 632 of 1536.
> Deleting element 633 of 1536.
> Deleting element 682 of 1536.
> Deleting element 683 of 1536.
> Deleting element 684 of 1536.
> Deleting element 685 of 1536.
> Deleting element 686 of 1536.
> Deleting element 687 of 1536.
> Deleting element 688 of 1536.
> Deleting element 689 of 1536.
> Deleting element 738 of 1536.
> Deleting element 739 of 1536.
> Deleting element 740 of 1536.
> Deleting element 741 of 1536.
> Deleting element 742 of 1536.
> Deleting element 743 of 1536.
> Deleting element 744 of 1536.
> Deleting element 745 of 1536.
> Deleting element 794 of 1536.
> Deleting element 795 of 1536.
> Deleting element 796 of 1536.
> Deleting element 797 of 1536.
> Deleting element 798 of 1536.
> Deleting element 799 of 1536.
> Deleting element 800 of 1536.
> Deleting element 801 of 1536.
> Deleting element 850 of 1536.
> Deleting element 851 of 1536.
> Deleting element 852 of 1536.
> Deleting element 853 of 1536.
> Deleting element 854 of 1536.
> Deleting element 855 of 1536.
> Deleting element 856 of 1536.
> Deleting element 857 of 1536.
> Deleting element 906 of 1536.
> Deleting element 907 of 1536.
> Deleting element 908 of 1536.
> Deleting element 909 of 1536.
> Deleting element 910 of 1536.
> Deleting element 911 of 1536.
> Deleting element 912 of 1536.
> Deleting element 913 of 1536.
> drwobjs: 0
> Showing only 90 elements of 1472
> drwobjs: 0
> inside gencen 1472 F 4
> done gencen 1472
> 1 END ELEMENTS
> 2 MODIFY ELEMENT
> 3 GLOBAL REFINE
> 4 CURVE SIDES
> 5 DELETE ELEMENT
> 6 ZOOM
> 7 SET GRID
> 8 DEFINE OBJECT
> 9 REDRAW MESH
> 10 IMPORT MESH
> 11 IMPORT VTK MESH
> 12 IMPORT vtx MESH
> 13 REFLECT MESH
> Choose item:
> 1
>
> 1
> 1 ACCEPT MATL,QVOL
> 2 SELECT ELEMENT
> 3 SELECT MATL [ 0]
> 4 SET MATL PROPS,Q
> 5 SHOW MATL PROPS,Q
> Choose it
>
> 1
> 1
> start locglob_lexico: 4 1472 5888 1.99999996E-02
> locglob: 1 1 5888
> locglob: 2 81 5888
> locglob: 1 1562 5888
> locglob: 2 1562 5888
> Performing unique_vertex2 self_chk 5888
> done locglob_lexico: 1562 1562 5888 5
> Performing makecell self_chk 5888
>
>
> *** MIDWAY BREAK MENU ***
> ABORT to write build data to file and exit
> SET B.C'S to continue
> 1 SET BCs
> 2 ABORT
> Choose item:
>
> 2
> Generating Mesh Points for 1472 Elements
> 1472 this is nel in prexit
> Writing Parameters to file
> Deleting tmp.* files.
> Exiting session 4.59163468E-41
>
>
>
>
>
>
>
>
>
> _______________________________________________
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> Nek5000-users at lists.mcs.anl.gov
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>
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