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<div class="moz-cite-prefix">Hi,<br>
<br>
If I understand the lin_channel2D example correctly, it is not
using any Krylov method but simply sets an initial perturbation
and lets it evolve. Are you using the Arnoldi algorithm?<br>
<br>
I can have a look if you upload your files somewhere.<br>
<br>
Guillaume<br>
<br>
Le 24/02/2018 à 08:53, <a class="moz-txt-link-abbreviated"
href="mailto:nek5000-users@lists.mcs.anl.gov">nek5000-users@lists.mcs.anl.gov</a>
a écrit :<br>
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cite="mid:mailman.9443.1519474978.19102.nek5000-users@lists.mcs.anl.gov">
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<div>Dear Neks,</div>
<div><br>
</div>
<div>Recently, I am trying to set up a linear stability analysis
of flow past a cylinder at very low Re, see Re=20, after I had
a converged base flow, I modified the example “lin_chan*” and
read the dns result as baseflow and updated the *usr file,
after testing groups of parameters in *.par, I obtained
different groups of growth rates, but none of them is closed
to the value documented by Luchini et tal, JFM or the value
given by other codes. Are there more details or rules to
choose the parameters when performing a linear stability, e.g.
Krylov space dimension, number of converged eigenvalues to be
dumped?</div>
<div><br>
</div>
<div>Thanks!</div>
<div>Wei</div>
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