[Nek5000-users] problem about case turbChannel

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

Hi all,
When I tried to do the test "turbChannel", I found value NAN appeared in the process, and after a while the pressure solver detect rank deficiency. I tried almost all the 
test case, and found this problem appeared in some other cases. I want to know why and how to accomplish the turbChannel case. Should I change any values in the .usr file?

Best wishes!
Hu