[Nek5000-users] SYM and ON boundary conditions

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

Hi Praveen,

I think 'ON' is the same as O for the n direction, and Dirichlet for the t
directions.

Concerning the SYM you are right it is (grad(u).n).t, it may be better to not have it in vector notation at all. However I don't think there is a condition on the pressure, but I guess one could check in the code.

Oana
________________________________
From: nek5000-users-bounces at lists.mcs.anl.gov [nek5000-users-bounces at lists.mcs.anl.gov] on behalf of nek5000-users at lists.mcs.anl.gov [nek5000-users at lists.mcs.anl.gov]
Sent: Friday, October 24, 2014 10:18 AM
To: nek5000-users at lists.mcs.anl.gov
Subject: Re: [Nek5000-users] SYM and ON boundary conditions

Hello Oana

The "O" condition is fine. Is ON also same ?

In the SYM, is there no condition on the pressure ? Also it seems to me it should read

(grad(u).n).t

or in terms of matrix-vector products

t^T * grad(u) * n

Can you clarify please ?

Thanks
praveen

On Fri, Oct 24, 2014 at 8:00 PM, <nek5000-users at lists.mcs.anl.gov<mailto:nek5000-users at lists.mcs.anl.gov>> wrote:
Hi Praveen,

This information will be in the new documentation soon to be posted. I attached a small pdf of the section that interests you.

I'd greatly appreciate appreciate if you let me know whether this was accurate and helped cause I didn't get to check it thoroughly yet (that's why the document is not up yet).

Best,
Oana
________________________________
From: nek5000-users-bounces at lists.mcs.anl.gov<mailto:nek5000-users-bounces at lists.mcs.anl.gov> [nek5000-users-bounces at lists.mcs.anl.gov<mailto:nek5000-users-bounces at lists.mcs.anl.gov>] on behalf of nek5000-users at lists.mcs.anl.gov<mailto:nek5000-users at lists.mcs.anl.gov> [nek5000-users at lists.mcs.anl.gov<mailto:nek5000-users at lists.mcs.anl.gov>]
Sent: Friday, October 24, 2014 5:41 AM
To: nek5000
Subject: [Nek5000-users] SYM and ON boundary conditions

Dear neks

Could you list the equations used for the SYM and ON boundary conditions ?

Thanks
praveen

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