[Nek5000-users] Inconsistent Periodic BC in Prenek

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

Hi Saikat,

If you're doing this in prenek then the likelihood of having the periodic bcs retain correct
numbering is very low.

I would suggest to build the mesh in genbox and you can then prescribe the BCs
(along with precise coordinates of the array of elements).

Otherwise, the standard procedure is to edit the .rea file and replace " P " with "   " (3 blanks),
then go into prenek and when it prompts for BCs click:

SET ENTIRE LEVEL
PERIODIC AUTO

.... which should produce what you need.

Paul

________________________________
From: nek5000-users-bounces at lists.mcs.anl.gov [nek5000-users-bounces at lists.mcs.anl.gov] on behalf of nek5000-users at lists.mcs.anl.gov [nek5000-users at lists.mcs.anl.gov]
Sent: Sunday, April 09, 2017 5:39 PM
To: nek5000-users at lists.mcs.anl.gov
Subject: [Nek5000-users] Inconsistent Periodic BC in Prenek

Hello Neks,

I am making a rectangular domain with two sides periodic and 2 sides no-slip. I am having problems after the global refine. If I refine my domain to 48 elements, it's fine, but if I refine it to 192 elements (which is better, with a grid size =1 ), it returns "Inconsistent Periodic BCs" and "Reset el/face1". As a result the "genmap" does not work due to Periodic Mismatch.

Please note that there is no problems if no. of elements = 48. I don't understand what the problem is. Any help is appreciated. Thanks for reading.

Saikat

Saikat Mukherjee,
PhD Student,
Paul Research Group - http://www.me.vt.edu/mpaul/
Engineering Science and Mechanics,
Virginia Tech.
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