[Nek5000-users] Outflow boundary conditions

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

Hi Vatslav,

In bdry.f file (repo file), the 'o' boundary condition is fed through the
variable pa = 0. Thats the term involving p + \nu (\grad u + \grad u^T) =
0. In the rea file you can change the 'O' boundary condition to user
defined 'o' boundary condition and then in the uderbc() you can set your
conditions on pa.

On Fri, Feb 17, 2017 at 12:13 AM, <nek5000-users at lists.mcs.anl.gov> wrote:

> Dear all,
>
> Is there an easy way to modify O boundary conditions. Now both non-stress
> and stress formulation include only pressure and viscous forces. I would
> like to add convection as well so that some components of full momentum
> flux tensor are equal zero? Is that possible?
>
> Thank you!
>
> Regards,
> Vatslav
>
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