Re: [Nek5000-users] Dynamo set up with weird results

Hi again, I was able to solve the problem: I wasn't aware that the forcing in userf is also added to the induction equation. To avoid this, one has to use: ffx=0.0d0 ffy=0.0d0 ffz=0.0d0 if (ifield .eq. 1) then c----velocity forcing here ffx=... ffy=... ffz=... endif as in the mhd example case. My example seems to be running fine (for now). Cheers, Jan