[Nek5000-users] *.fld files to ...

Mon Apr 19 11:57:18 CDT 2010

Hi Frank,

You're exactly right about this.  The problem isn't with VisIt, but
with its Nek reader.  We used to have it implemented so it could
detect this case, but it was slow.  Since we observed that much Nek
usage doesn't have a moving mesh, we disabled it.  It sounds like the
Nek community is changing its usage of the code.  I'll try to get this
straightened out in VisIt.

Best,
Hank

On Mon, Apr 19, 2010 at 9:40 AM,  <nek5000-users at lists.mcs.anl.gov> wrote:
> Hi Stefan,
>
> Yes, that is pretty much it; I am used to Tecplot and like it.  If visit
> could do the job that could also be OK.  One problem with Visit is (and
> I have gone through the manual) is that it does not seem to have a way
> to deal with moving boundary problems when a different grid is output at
> each time step (as NEK does).
>
> Cheers,
> Frank
>
> On Mon, 2010-04-19 at 18:29 +0200, nek5000-users at lists.mcs.anl.gov
> wrote:
>> Frank,
>>
>> why do you want to use TecPlot?
>> I know sometime it's just because you don't want to dig into another tool.
>> However if there are other good reasons I am sure Hank will be quite interested to improve VisIt.
>>
>> Stefan
>>
>>
>>
>> On Apr 19, 2010, at 6:24 PM, nek5000-users at lists.mcs.anl.gov wrote:
>>
>> > Yes, I think a convert is the way to go.
>> > I will release at some point my old TecPlot convert however I need to fix a few things first. Unfortunately I am quite busy these days so it will take some time.
>> >
>> > Stefan
>> >
>> >
>> > On Apr 19, 2010, at 6:19 PM, nek5000-users at lists.mcs.anl.gov wrote:
>> >
>> >> Hello Stefan,
>> >>
>> >> Actually I would like to do that.  I am quite familiar with I/O and
>> >> Tecplot and could make a writer that outputs their binary format files.
>> >> This could be done two ways, outputting directly from NEK to Tecplot
>> >> format files (and therefore not using the *.fld files for I/O) or
>> >> something that takes the *.fld files and creates Tecplot format files.
>> >> I tend to think the second is the best method as the issue of parallel
>> >> I/O is sidestepped.  What is your opinion on this?
>> >>
>> >> Cheers,
>> >> Frank
>> >>
>> >>
>> >> On Mon, 2010-04-19 at 18:02 +0200, nek5000-users at lists.mcs.anl.gov
>> >> wrote:
>> >>> Yes you're right the export capabilities to TecPlot are quite limited (no multizone support, etc.).
>> >>> If you know the data layout of NEK it's quite easy write your own convert.
>> >>> We did that for TecPlot some time ago.
>> >>>
>> >>> Stefan
>> >>>
>> >>>
>> >>> On Apr 19, 2010, at 5:57 PM, nek5000-users at lists.mcs.anl.gov wrote:
>> >>>
>> >>>> Hi Stefan,
>> >>>>
>> >>>> Thanks.  I had tried that.  This translator appears to be a fairly rough
>> >>>> attempt to output data in Tecplot's format.  It at times writes out
>> >>>> files that Tecplot cannot read.  In addition, if dealing with temporal
>> >>>> data, there appears to be no way to write out the data at each time step
>> >>>> to a single Tecplot file.  Therefore, one would need to do this
>> >>>> (exporting through the menus) for every file at every time step.
>> >>>>
>> >>>> Cheers,
>> >>>> Frank
>> >>>>
>> >>>>
>> >>>> On Mon, 2010-04-19 at 17:34 +0200, nek5000-users at lists.mcs.anl.gov
>> >>>> wrote:
>> >>>>> Frank,
>> >>>>>
>> >>>>> read your data into VisIt and use the export option.
>> >>>>> I don't recall exactly what output formats they support but there are quite a few.
>> >>>>>
>> >>>>> Stefan
>> >>>>>
>> >>>>>
>> >>>>> On Apr 19, 2010, at 5:30 PM, nek5000-users at lists.mcs.anl.gov wrote:
>> >>>>>
>> >>>>>> Hello all,
>> >>>>>>
>> >>>>>> Does anyone know of a way to translate *.fld files to a different format
>> >>>>>> (perhaps such as HDF, CGNS, Plot3D etc.)?
>> >>>>>>
>> >>>>>> Cheers,
>> >>>>>> Frank
>> >>>>>>
>> >>>>>>
>> >>>>>> --
>> >>>>>> Frank Herbert Muldoon, Ph.D. Mechanical Engineering
>> >>>>>> Technische Universität Wien (Technical University of Vienna)
>> >>>>>> Inst. f. Strömungsmechanik und Wärmeübertragung (Institute of Fluid
>> >>>>>> Mechanics and Heat Transfer)
>> >>>>>> Resselgasse 3
>> >>>>>> 1040 Wien
>> >>>>>> Tel: +4315880132232
>> >>>>>> Fax: +4315880132299
>> >>>>>> Cell:+436765203470
>> >>>>>> fmuldoo (skype)
>> >>>>>> http://tetra.fluid.tuwien.ac.at/fmuldoo/public_html/webpage/frank-muldoon.html
>> >>>>>>
>> >>>>>> _______________________________________________
>> >>>>>> Nek5000-users mailing list
>> >>>>>> Nek5000-users at lists.mcs.anl.gov
>> >>>>>> https://lists.mcs.anl.gov/mailman/listinfo/nek5000-users
>> >>>>>
>> >>>>> _______________________________________________
>> >>>>> Nek5000-users mailing list
>> >>>>> Nek5000-users at lists.mcs.anl.gov
>> >>>>> https://lists.mcs.anl.gov/mailman/listinfo/nek5000-users
>> >>>> --
>> >>>> Frank Herbert Muldoon, Ph.D. Mechanical Engineering
>> >>>> Technische Universität Wien (Technical University of Vienna)
>> >>>> Inst. f. Strömungsmechanik und Wärmeübertragung (Institute of Fluid
>> >>>> Mechanics and Heat Transfer)
>> >>>> Resselgasse 3
>> >>>> 1040 Wien
>> >>>> Tel: +4315880132232
>> >>>> Fax: +4315880132299
>> >>>> Cell:+436765203470
>> >>>> fmuldoo (skype)
>> >>>> http://tetra.fluid.tuwien.ac.at/fmuldoo/public_html/webpage/frank-muldoon.html
>> >>>>
>> >>>> _______________________________________________
>> >>>> Nek5000-users mailing list
>> >>>> Nek5000-users at lists.mcs.anl.gov
>> >>>> https://lists.mcs.anl.gov/mailman/listinfo/nek5000-users
>> >>>
>> >>> _______________________________________________
>> >>> Nek5000-users mailing list
>> >>> Nek5000-users at lists.mcs.anl.gov
>> >>> https://lists.mcs.anl.gov/mailman/listinfo/nek5000-users
>> >> --
>> >> Frank Herbert Muldoon, Ph.D. Mechanical Engineering
>> >> Technische Universität Wien (Technical University of Vienna)
>> >> Inst. f. Strömungsmechanik und Wärmeübertragung (Institute of Fluid
>> >> Mechanics and Heat Transfer)
>> >> Resselgasse 3
>> >> 1040 Wien
>> >> Tel: +4315880132232
>> >> Fax: +4315880132299
>> >> Cell:+436765203470
>> >> fmuldoo (skype)
>> >> http://tetra.fluid.tuwien.ac.at/fmuldoo/public_html/webpage/frank-muldoon.html
>> >>
>> >> _______________________________________________
>> >> Nek5000-users mailing list
>> >> Nek5000-users at lists.mcs.anl.gov
>> >> https://lists.mcs.anl.gov/mailman/listinfo/nek5000-users
>> >
>> > _______________________________________________
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>> > Nek5000-users at lists.mcs.anl.gov
>> > https://lists.mcs.anl.gov/mailman/listinfo/nek5000-users
>>
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> --
> Frank Herbert Muldoon, Ph.D. Mechanical Engineering
> Technische Universität Wien (Technical University of Vienna)
> Inst. f. Strömungsmechanik und Wärmeübertragung (Institute of Fluid
> Mechanics and Heat Transfer)
> Resselgasse 3
> 1040 Wien
> Tel: +4315880132232
> Fax: +4315880132299
> Cell:+436765203470
> fmuldoo (skype)
> http://tetra.fluid.tuwien.ac.at/fmuldoo/public_html/webpage/frank-muldoon.html
>
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