[Nek5000-users] Number of elements for 3D simulations

nek5000-users at lists.mcs.anl.gov nek5000-users at lists.mcs.anl.gov
Thu Jun 16 07:43:23 CDT 2011


Hi Paul,

yes, only my spanwise direction ("t") is periodic.

David

On 06/16/2011 02:25 PM, nek5000-users at lists.mcs.anl.gov wrote:
>
> Hi David,
>
> You're refering to periodic, correct?
>
> Is your spanwise direction the "z" direction in the element? (really,
> what we call "t"...)
>
> We might be able to correct the issue for this particular case,
> assuming you don't have periodicity in the other directions.
>
> Paul
>
>
> On Thu, 16 Jun 2011, nek5000-users at lists.mcs.anl.gov wrote:
>
>> Hello,
>>
>> I wanted to ask if it would be possible to allow to run nekton with less
>> than 3 elements in the z-direction. I run a lot of simulations for a
>> spanwise homogeneous swept wing geometry. The baseflow can be obtained
>> solving a 2D problem where the heat equation is solved as the spanwise
>> momentum equation. However, I also want to study the stability of this
>> flow and thus solve the linearised Navier-Stokes eq. for some modal
>> disturbances, i.e. u(x,y,z) = u'(x,y)*exp(i*beta*z). If I would be able
>> to resolve this mode with less than 3 elements in the spanwise direction
>> it would save me a lot of computational time.
>>
>> Best regards,
>>
>> David
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