[Nek5000-users] Restart problem

nek5000-users at lists.mcs.anl.gov nek5000-users at lists.mcs.anl.gov
Wed Dec 7 11:01:32 CST 2011


Hi Adam,

Have you tried the full restart option described in email

https://lists.mcs.anl.gov/mailman/htdig/nek5000-users/2010-August/000900.html

There was an earlier email about some problems with it -- I can check it once I came back from travel.

Best.
Aleks
 

----- Original Message -----
From: nek5000-users at lists.mcs.anl.gov
To: nek5000-users at lists.mcs.anl.gov
Sent: Tuesday, December 6, 2011 8:23:37 AM
Subject: [Nek5000-users] Restart problem

Hi

I simulate jet in crossflow problem with nek5000 and I've got serius
problems with restarting the simulation. It causes strong spurious
velocity oscillation and I cannot get rid of them. I've implemented
restarting procedure described in prepost.f, but it doesn't help much.
Playing with file format (parameters p66, p67) and projection (p94, p95)
I can only decrease oscillations amplitude, but they are still there.
Surprisingly saving output files in double precision (p63=8) makes
everything worse. Has anybody got similar problems?
Best regards

Adam

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