[Nek5000-users] Compute the derivatives

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

what about rho u.grad u ?



On Thu, 8 Jul 2010, nek5000-users at lists.mcs.anl.gov wrote:

> 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
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