[Nek5000-users] Postprocessing

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

Dear Nek devs,

     I'm a bit confused regarding postprocessing. Is one supposed to run 
a simulation and then run nek5k again to load the fld files using 
load_fld() for postprocessing? Or can one compute the desired quantities 
after every time step using userchk() and then output them in a file? 
For example, how can I compute the vorticity using the differential 
operators defined in the code? After computing the vorticity, can it be 
outputted using the same fld files?

Regards,
Mani chandra