[Nek5000-users] shear stress and auto_averager

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

 Hi all,

Further my last request, since rm2 files contain the cross product running
averages, how I can know the time-averaged <uv>, <vw>, and <uw> exactly? I
know there is a way by calling auto_averager subroutine, but it doesn't
have a good performance.

To get the shear stress, what I did for the averaging is,
1. call averaging avg0f.0000*** files to get mean of u, v and w;
2. call averaging rm20f,0000** files to get mean of <uv>, <vw>, and <uw>
(but I don't know exactly what they are since I dont know the order of
results.
3. sqrt(mean<uw>-mean<u>*mean<w>)

Do you think the process is correct?

Kind regards,

Jian
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