[Nek5000-users] Zero flux boundary conditions

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

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