[Nek5000-users] Instantaneous velocity field

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

One of the ways to go about this would be to use the history points option.
You would get your instantaneous velocity and pressure ields at certain
timesteps written into a history file

On Wed, Feb 21, 2018, 4:53 PM <nek5000-users at lists.mcs.anl.gov> wrote:

> Hello,
>
>
>
> Thank you for the reply. I am aware of those lines are intended for
> time-averaging. I was wondering if anyone could teach me how to generate
> the instantaneous velocity field
>
> in a similar pattern like the following:
>
>
>
>          open(unit=56,file='vel_fluc_prof.dat')
>
>          write(56,'(A,1pe14.7)') '#time = ', time
>
>          write(56,'(A)')
>
>      &   '#  y     y+     uu     vv     ww     uv'
>
> Thanks a lot,
>
>
>
> Tim
> ------------------------------
>
>
>
> this is not really instantaneous data, but rather statistics. Then you
>
> would need to run some kind of averaging (in time, space etc.) and
>
> proper postprocessing afterwards, which strongly depends on the actual
>
> flow case. I am sure that there are people in this group that have done
>
> this type of analysis for a variety of flow cases/geometries.
>
>
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-- 

*Amitvikram Dutta*

Graduate Research Assistant

Fluid Mechanics Research Lab

Multi-Physics Interaction Lab

University of Waterloo
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