[Nek5000-users] Compute the derivatives

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

Thanks a lot for you answer. But if I compute all my derivates in this 
way, I have deviation in my momentum equations...
In the stagnation point of my sphere (u=v=w=0) I get the following:

-1/rho dp/dx = 0.4125
nu (d2u/dx2 + d2u/dy2 + d2u/dz2) = 0.3775

--> delta = 3.5e-2

Do you have an idea from where this delta might result??

Best, Fred