[Nek5000-users] The first time step in a Nek file must contain a mesh

nek5000-users at lists.mcs.anl.gov nek5000-users at lists.mcs.anl.gov
Fri Mar 2 07:41:23 CST 2012


nek5000-users at lists.mcs.anl.gov a écrit :
> nek5000-users at lists.mcs.anl.gov a écrit :
>>
>> These parameters should definitely have yielded as street. Typically
>> the street forms after t=100-200 convective time units.
>>
>> What is your lx1 value in SIZE ?
>>
>> What are p101 and p103 in the .rea file ?
>>
>> Paul
>>
>>
>>
>>> Thank you very much to both of you, these are really useful infos :)
>>> But i got another question, i can visualize now the vorticity field, 
>>> but i don't see any v.karman vortexes, i just see some vortexes 
>>> around my circle (diameter 1) obstacle.
>>> My bc are as follow : unit-diameter cylinder is centered at (0,0) in 
>>> a box on [-15,35] x [-15,15]. (picked up the .rea on the ext_cyl 
>>> example)
>>> left : velocity inlet with 1m/s
>>> right : pressure output
>>> top and bottom , periodic
>>> Re= 160 (>50 for the instability)
>>> dt=0.01
>>> End of simulation Time = 550
>>> can this be because of the meshe not being tight enough ??
>>> B.regards
>>> Can
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> lx1=10  0.00000     p101 Number of additional modes to filter
> 1.00000     p102 Dump out divergence at each time step
>
>
>
>
>
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Sorry i forgot
0.100000E-01 p103 weight of stabilizing filter (.01)
Thx for helping me



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