[Nek5000-users] Transfer data from an nelx*nely*nelz array of Nth-order to an n*n*n array for FFT analysis

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

Hi Neks, Hi Can,
I too would be very interested in getting more information about these routines.
regards
Jan

Am 5. April 2012 18:10 schrieb  <nek5000-users at lists.mcs.anl.gov>:
> Hi neks !
>
> For a given velocity field
> (vx(1:lx1,1:ly1,1:lz1,1:lelv),vy(1:lx1,1:ly1,1:lz1,1:lelv),vz(1:lx1,1:ly1,1:lz1,1:lelv))
> i would like to calculate the energy spectrum, this implies FFT
> transformation on regular arrays
> vx(1:n,1:n,1:n),vy(1:n,1:n,1:n),vz(1:n,1:n,1:n) (need
> deltax=deltay=deltaz=cst).
> On the emailing-list it has been said :
> "We do have off-line serial routines
> that can transfer data from an nelx x nely x nelz array of Nth-order
> elements to an nxnxn array - this allows for analysis by FFTs etc"
>
>
> Can you please tell me more about this ? What are these routines ??
> B.regards
> Can
>
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