[Nek5000-users] New Recycling BC based on interpolation

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

Hi Markus,

I don't know why this wouldn't work for nelgt > nelgv.

I would say we don't know the performance hit yet - I think
someone is looking into this question.  Performance will of 
course vary significantly from problem to problem and platform
to platform.   I suspect that it should not be a major hit ---
have you observed otherwise?

Paul


On Sat, 17 Jul 2010, nek5000-users at lists.mcs.anl.gov wrote:

> Hi Aleks,
>
> thanks for the code, I looked over it and have two questions:
> -at some point, it is mentioned that this method does not work if 
> nelgt>nelgv. Why is that? I am asking because this will be applied to a 
> conjugate HT problem (although the recycling part is purely concerning 
> flow+convection). Will this problem also occur when only findpts is used 
> instead of intpts?
> -is there a performance difference between calling intpts as opposed to gs_op 
> (as is done in the turbJet example) every time step for large scale 
> production runs? The latter is what I used in my version.
>
> Thanks,
> Markus
>
>
> nek5000-users at lists.mcs.anl.gov wrote:
>> Hi Michael and Markus,
>> 
>> Here is a test case for an unsteady pipe flow with Michael's GambitPipe.rea 
>> file which sets inlet Recycling BCs based on interpolation from a 
>> cross-section downstream that you specify by a multiple of the inlet 
>> normal:
>> 
>> http://www.mcs.anl.gov/~obabko/z4.tgz
>> 
>> 
>> Let me know if you have any questions.
>> Best,
>> Aleks
>> 
>> 
>> 
>> 
>> ----- Original Message -----
>> From: nek5000-users at lists.mcs.anl.gov
>> To: nek5000-users at lists.mcs.anl.gov
>> Sent: Thursday, July 8, 2010 5:06:48 PM GMT -06:00 US/Canada Central
>> Subject: Re: [Nek5000-users] New Recycling BC method?
>> 
>> 
>> 
>> 
>> 
>> No worries, just checkin in to see how it was going, thanks for the update! 
>> Look forward to trying it out! 
>> 
>> 
>> - Michael 
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