Unfortunately, this process computes the spanwise- & time-averaged RS. I'm not entirely sure how to compute the spanwise-averaged, instantaneous RS if that's your goal. Perhaps I could suggest tinkering with FieldConvert -m fieldfromstring (user guide v5.2) to create an instantaneous RS field manually.

Hi Chi Hin

Thanks for your reply. Yes I meant the spanwise averaging. But I guess this method would give a 2-D expansion containing the mean mode of instantaneous quantities.

What can I do if I'd also want to spanwise-average quantities such as Reynolds stresses?

Kind regards

syavash

On Thu, Aug 31, 2023 at 11:37 AM Chan, Chi Hin <chi.chan19@imperial.ac.uk> wrote:

Hi Syavash,

Are you referring to averaging across the homogeneous (z-th) direction? i.e the Fourier 0-th mode.

If so, you can use FieldConvert -m meanmode. Hope this helps

Cheers

Chi Hin

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Subject: [Nektar-users] average planes in a quasi 3-D simulation

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Dear All,

How can I average the solutions of planes across the homogenous direction in a Quasi 3-D simulation?

Kind regards

syavash