[Nek5000-users] Defining 2 different drichlet velocities in 2 different zones

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

Hi Amitvikram,


One way to do it by geometry since userbc() has x,y,z info for each GLL point.


Another way is during the mesh construction: use a specific boundary character codes say  'v01' and 'v02' instead of default 'v  ' and then in usrdat2() loop over cbc array to switch them back to 'v  ' remembering the local element numbers for a future use in userbc().


Aleks

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From: Nek5000-users <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: Monday, November 13, 2017 9:39:12 AM
To: nek5000-users at lists.mcs.anl.gov
Subject: [Nek5000-users] Defining 2 different drichlet velocities in 2 different zones

Hi all,

I'm using a geometry where I need to define 2 different velocities at 2 inlets. How do I differentiate the zones in the .usr file where i set up my bcs? Whats the format for this?


Sincerely,
--

Amitvikram Dutta

Graduate Research Assistant

Fluid Mechanics Research Lab

University of Waterloo
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