[Nek5000-users] pressure boundary condition

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

Dear Fred,

The pressure bcs are chosen to ensure div.U=0.

For the Pn-Pn case, this involves addition of an appropriate inhomogeneity
that cancels the b.l. divergence that arises from std. splitting 
formulations.

For the Pn-Pn-2 case, there are no pressre bcs, only velocity bcs.

Paul


On Thu, 24 Jun 2010, nek5000-users at lists.mcs.anl.gov wrote:

> Dear NEKs,
>
> I wanted to ask which boundary condition is used for the pressure in nek?? 
> are all pressure gradients normal to wall set tto zero?? because in my 
> current simulation i have a pressure gradient normal to a wall and i am 
> wondering why!?
>
> best, fred
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