[Nek5000-users] turbJet problem

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

Hi Tanmoy,
Many thanks. It seems that after dividing by 4 (dt=0.005) it runs and I 
get output files in the form jet0.fxxxxx .
Now I am trying to visualize them using the precompiled ubuntu11 version 
of visit. Unfortunately, I get the following error:

  VisIt could not read from the file 
"/home/galanti/COMPUTATION/NEK5000/nek5_svn/TEST-examples/turbJet/jet0.f* database".

The generated error message was:

There was an error opening 
/home/galanti/COMPUTATION/NEK5000/nek5_svn/TEST-examples/turbJet/jet0.f* 
database. It may be an invalid file.  VisIt tried using the following 
file format readers to open the file: Nek5000

The following error(s) may be helpful in identifying the problem:
When attempting to use "Nek", the file matched the general format 
expected by the reader but eventually encountered this error: "A tag 
called filetemplate: must be specified".

What's wrong?
Many thanks again,
Barak


On 12/07/2013 12:42 AM, nek5000-users at lists.mcs.anl.gov wrote:
> Hi Barak,
>
> It is a problem with numerical Stability. Decrease DT  in your .rea file
> until the simulations become stable. You could start with 1/2 DT to
> check if simulation is stable, other wise go for 1/4 DT, and check with
> this simple test.
>
> Thanks,
> Tanmoy
>
>
> On Fri, Dec 6, 2013 at 3:31 PM, <nek5000-users at lists.mcs.anl.gov
> <mailto:nek5000-users at lists.mcs.anl.gov>> wrote:
>
>     Hello,
>     I am testing the example turbJet, and it seems that I have some
>     problem with output. This are the output files:
>     jet0.f00001
>
>     Moreover, the ran stops with emergency exit at time 5.64 (CFL too
>     large?):
>
>
>              282  DNORM, DIVEX   6.2789891850172769E-004
>     8.4967723454134898E-006
>              282   5.6400E+00  1.1065E+01 Fluid done
>         282  5.6400000E+00  1.1955953E-03  6.4269380E-04  9.9999991E-01 e2
>       t max/min:   0.0000000000000000        0.0000000000000000
>       CFL, Ctarg!   22.504301079496056        2.0000000000000000
>       call outfld: ifpsco: T
>
>            283  5.6400E+00 Write checkpoint:
>             0     283 OPEN: jet0.f00001
>
>            283  5.6400E+00 done :: Write checkpoint
>                                    file size =      55.    MB
>                                    avg data-throughput =   572.1MB/s
>                                    io-nodes =     1
>
>
>                 7  Emergency exit:         283    time =
>     5.6399999999999677
>        Latest solution and data are dumped for post-processing.
>        *** STOP ***
>                 3  Emergency exit:         283    time =
>     5.6399999999999677
>        Latest solution and data are dumped for post-processing.
>        *** STOP ***
>                 5  Emergency exit:         283    time =
>     5.6399999999999677
>        Latest solution and data are dumped for post-processing.
>        *** STOP ***
>                 0  Emergency exit:         283    time =
>     5.6399999999999677
>        Latest solution and data are dumped for post-processing.
>        *** STOP ***
>                 6  Emergency exit:         283    time =
>     5.6399999999999677
>        Latest solution and data are dumped for post-processing.
>        *** STOP ***
>                 4  Emergency exit:         283    time =
>     5.6399999999999677
>        Latest solution and data are dumped for post-processing.
>        *** STOP ***
>                 2  Emergency exit:         283    time =
>     5.6399999999999677
>        Latest solution and data are dumped for post-processing.
>        *** STOP ***
>                 1  Emergency exit:         283    time =
>     5.6399999999999677
>
>
>
>
>     Thank you,
>     Barak
>
>
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