[Nek5000-users] SETDTC message

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

Hi Paul,

I always have dt < 0.  In this case, that message can safely be ignored?
By the way, if dt < 0, should this routine even be called?

Cheers,
Frank

On Mon, 2010-04-19 at 16:27 -0500, nek5000-users at lists.mcs.anl.gov
wrote:
> Hi Frank,
> 
> Set DT < 0 (param 12 in .rea file) and then dt = |param(12)| for
> the duration of the run.  (Sometimes you still get the message though...)
> 
> Paul
> 
> On Mon, 19 Apr 2010, nek5000-users at lists.mcs.anl.gov wrote:
> 
> > Hello all,
> 
> I am coming across the following message "Problem calculating new DT
> Discriminant" in subroutine "SETDTC" where a new timestep based on the
> CFL condition is computed.  Aside from what the message means, how can
> one turn off variable time stepping (which I assume is occurring since
> this subroutine is being called).
> 
> 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
> 
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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