[Nek5000-users] Zero flux boundary conditions
nek5000-users at lists.mcs.anl.gov
nek5000-users at lists.mcs.anl.gov
Sat May 15 10:37:21 CDT 2010
You need two bcs - one for fluid and one for T.
For the flow, "SYM" will be stress free (u.nhat=0, du/dn=0)
"W " will be homogeneous Dirichlet (u=0)
For temperature, use "I " which is insulated (zero flux).
Paul
On Sat, 15 May 2010, nek5000-users at lists.mcs.anl.gov wrote:
> Dear Nek devs,
>
> How does one put in zero-flux boundary conditions for temperature? The
> nek wiki says that anything other than the primitive boundary conditions will
> be taken as zero-flux but in the benard example, the "zero-flux" condition
> for velocity was put in using the SYM boundary condition which is a primitive
> boundary condition as shown in the nek wiki. Could you please clarify?
>
> Regards,
> Mani chandra
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