[Nek5000-users] Number of elements for 3D simulations

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

Hi David,

We've just updated the repo - I have one additional update to make,
but in all likelihood the code now has the functionality you request.

I've tested it on one case so far (aside from our std. buildbot
suite).

The code now supports the following bc:

   'p  '

for periodicity with the face, on the same element, that is opposite 
to the face having the 'p  ' BC specification.

Both of the opposing faces on th element must have 'p  '.


As I type this, I realize that this BC designation is not a 
viable long-term solution as it is error-prone.   Hopefully
within the next couple weeks we can fix the requisite codes
so that one simply specifies 'P  ' for this condition, just
as would be done for the other periodicity condition.

In any case, this should get you started.

Cheers,

Paul





On Thu, 16 Jun 2011, nek5000-users at lists.mcs.anl.gov wrote:

> Hello,
>
> I wanted to ask if it would be possible to allow to run nekton with less
> than 3 elements in the z-direction. I run a lot of simulations for a
> spanwise homogeneous swept wing geometry. The baseflow can be obtained
> solving a 2D problem where the heat equation is solved as the spanwise
> momentum equation. However, I also want to study the stability of this
> flow and thus solve the linearised Navier-Stokes eq. for some modal
> disturbances, i.e. u(x,y,z) = u'(x,y)*exp(i*beta*z). If I would be able
> to resolve this mode with less than 3 elements in the spanwise direction
> it would save me a lot of computational time.
>
> Best regards,
>
> David
> _______________________________________________
> Nek5000-users mailing list
> Nek5000-users at lists.mcs.anl.gov
> https://lists.mcs.anl.gov/mailman/listinfo/nek5000-users
>