[Nek5000-users] Restart using a solution computed on different domain

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

Thanks for the reply Stefan. If I do not input any value in the part of
domain 2 that is not covered by domain 1, what will be the default value
of the flow variables? Would the values be assigned randomly?

P.S. As of now I am not much concerned with the initial condition. I 
just need
a fully developed solution at a given Re. I am doing this exercise to 
quickly reach
a fully developed state on the bigger domain.

Many thanks,
N.


On Wednesday 21 June 2017 03:57 PM, nek5000-users at lists.mcs.anl.gov wrote:
> You can use the generic fld reader to read the old field file data. 
> This will interpolate all fields onto the new mesh. Not sure what you 
> want to do with the part which is not covered by your old domain. For 
> this area you have to provide somehow a meaningful IC.
>
> Cheers
> Stefan
>
> On 21 Jun 2017, at 15:37, "nek5000-users at lists.mcs.anl.gov 
> <mailto:nek5000-users at lists.mcs.anl.gov>" 
> <nek5000-users at lists.mcs.anl.gov 
> <mailto:nek5000-users at lists.mcs.anl.gov>> wrote:
>
>> Hello,
>>
>>   I have carried out a simulation for the flow past a cylinder at Re=100.
>> The extent of the domain in the is [Lx,Ly,Lz] = [30, 10, 10]; x is the
>> streamwise, y transverse and z is the spanwise direction. I have another
>> computational domain with size [50, 10, 10]. The mesh near the
>> cylinder in the two meshes is identical. If I use the fully developed
>> solution
>> obtained using the first domain as a restart file for computation
>> using the second domain, will the first solution be projected on the
>> second mesh
>> automatically by NEK?
>>
>> Thanks.
>> N.
>>
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