[Nek5000-users] solver tolerances and norm of residual

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

Hello Alex,

I looked through your files & didn't see anything amiss (by the way, it
would be best to post your *.rea file).  Since it blows up on the first
attempt to solve for pressure, perhaps the BC's don't satisfy
conservation of mass?

Cheers,
Frank



On Tue, 2010-11-16 at 11:40 -0500, nek5000-users at lists.mcs.anl.gov
wrote:

> Hi Nek users,
> 
> I am new in using Nek5. I have succesfully simualted the lid-driven flow,
> rayleigh-bénard in a square cavity and laminar poiseuille flow. All of
> them were 2d cases. I though it would be straightforward to move from 2D
> to 3D simualtions but I have not been able to run a 3D poiseuille channel.
> I am obtaining an error on Helmoltz solver even in the first iteration.
> 
> Please, find output, usr and box files attached.
> Thanks in advance.
> 
> ..........................................
>            Alex Fabregat
>         Post-doctoral fellow
>         University of Ottawa
> Department of Mechanical Engineering
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> Nek5000-users mailing list
> Nek5000-users at lists.mcs.anl.gov
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-- 
Frank Herbert Muldoon, Ph.D. Mechanical Engineering
Technische Universität Wien (Vienna University of Technology)
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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