[Nek5000-users] Copy velocity slice from one boundary to another

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

Vatslav,

you will have to use the neknek script that allows you to exchange data between two Nek5000 sessions that are run simultaneously. You should have a look at the neknek examples to understand how to set up your usr file.

Some of the subroutines that will be useful to you are located in the following link: http://www.mcs.anl.gov/research/projects/nek5/docs/html/multimesh_8f_source.html

You will have to modify some of them to fit your needs since for example the subroutine ‘set_inflag’ is written to look for ‘in’ boundary conditions and replace them with ‘v  ’. You will need a subroutine that looks for ‘in’ and substitute it with either ‘v  ‘ or ‘P  ‘ depending on the which pipe you are at.

Marco

On Mar 24, 2017, at 4:16 AM, nek5000-users at lists.mcs.anl.gov<mailto:nek5000-users at lists.mcs.anl.gov> wrote:

Hi, Neks!

I have two pipes in my simulation. They are placed near each other on one axis with empty space between.
One of them with periodic boundary conditions on z direction, another one - inflow -> outflow.
How can I copy velocity slice from one of boundary on first pipe with periodic bc to the inflow boundary on second pipe?

Regards, Vatslav.
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