[Nek5000-users] BC type

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

Dear Xu,

You either want "I  " for insulated (zero flux), or "f  " for inhomogeneous flux specified in userbc() as:

      flux = 5*y

say... (or whatever functional form you want).  If you want a nonzero flux that is a constant, you can
have "F  "   in the .rea file, with VAL as the first real in the boundary condition line.

Some more information can be found here:

http://www.mcs.anl.gov/~oanam/old_page/index.php/Boundary_Definition

Paul

________________________________
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: Monday, January 25, 2016 8:02 PM
To: nek5000-users at lists.mcs.anl.gov
Subject: [Nek5000-users] BC type

Hi,Nek
    I want to set Neumann boundary conditions of temperature on the right and left sides of a cavity. I wonder how to set it in .box file.Thank you for your help.
Kind regards
Xu Bolun


--
徐博伦
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