[Nek5000-users] RE : problem with closed internal boundaries

nek5000-users at lists.mcs.anl.gov nek5000-users at lists.mcs.anl.gov
Tue May 11 13:57:11 CDT 2010


Hello Frank,

thanks for the quick answer. The Nek team should be relieved that the community is growing and that some users start to be able to help the newbies.
I tried what you recommended and now that you've said it, it looks obvious that all the z parameters should be 1 for a 2D case, but this isn't changing a thing. I still get those NaNs.

Do you have any other idea? 

Best, 


Michael 
________________________________________
De : nek5000-users-bounces at lists.mcs.anl.gov [nek5000-users-bounces at lists.mcs.anl.gov] de la part de nek5000-users at lists.mcs.anl.gov [nek5000-users at lists.mcs.anl.gov]
Date d'envoi : mardi 11 mai 2010 20:31
À : nek5000-users at lists.mcs.anl.gov
Objet : Re: [Nek5000-users] problem with closed internal boundaries

Hello Michael,

I am by no means knowledgeable concerning NEK, but will put my two-cents
in by saying that I believe that all dimensions in the z-direction must
be 1.  However, you have "parameter (lz2=lz1-2)" and "parameter
(lz3=lz2)".

Cheers,
Frank


On Tue, 2010-05-11 at 18:20 +0200, nek5000-users at lists.mcs.anl.gov
wrote:
> Hello Neks,
>
> I'm trying to model a flow past an obstacle in a channel. As a first step I would like to do a 2D simulation.
> I'm encountering some problems during the geometry data generation in the nek5000 execution : it looks like the program can only generate NaN values although genmap seems to work well on the .rea file.
> I can also reopen the rea file with prenek without any problems.
>
> Do you have any idea what is going wrong here?
> Is it problematic to have a closed internal boundary condition?
> Thanks in advance for any help.
>
> Best,
>
>
> Michael B
> _______________________________________________ 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

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