[Nek5000-users] Pressure Normalization

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

Hi Azad,

Any constant can be added to p in the case you describe.

Consequently, we choose the constant such that the spatial
average of p is zero at each timestep.

Does this answer your question?

Paul


On Thu, 20 Oct 2011, nek5000-users at lists.mcs.anl.gov wrote:

> Dear Neks;
>
> I would like to know how the pressure normalization is done in the
> code. Since I'm running a turbulent pipe flow with periodic B.C.s using
> Pn_Pn-2 scheme, I would like to obtain P_rms values; however, the
> pressure fluctuations does not look alright. I think in case of
> inflow/outflow, the conditions are to set the pressure to be zero
> at these boundaries; obviously this is not possible for periodic cases.
>
> Many thanks;
> Azad
>
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