[Nek5000-users] problem with turbCahnnel case
nek5000-users at lists.mcs.anl.gov
nek5000-users at lists.mcs.anl.gov
Tue Jun 22 05:00:58 CDT 2010
Hi Neks,
I am a newbie and i am trying to learn Nek5000 from the examples.
I run the TurbChannel case but i am not convinced by the results.
If i plot the x velocity the results look fine but if i plot the y-velocity in an xz plane close to the wall (y=-0.9) the results show clear periodical patterns both in x and z that are believe are not Physical. Moreover these strong periodical structures coincide with the element's boundaries which is suspicious.
I have tried to implement previous suggestions on the turbchannel case found on the mailing list( dt=0.025 and simple filtering)
but i didn't notice improvements.
Do you have any comments/suggestions on this? Do you think i am making a mistake in the plotting or in the settings ( i did a copy and paste of the case in the repository).
Thank you for any help
francesco
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