Dear all,
I have computed a stable *2D periodic solution* with nektar++ time
evolving the *incompressible Navier-Stokes solver*. Now I would like to
analyse it's *stability to spanwise-dependent perturbations*. I have
started doing this with time evolution, by using a homogeneous spanwise
direction with just one mode and monitoring its growth rate. This is
however extremely slow. I have noticed that in the user guide there's an
example that does Floquet stability analysis on the periodic 2D vortex
shedding solution of the flow around a cylinder, but unfortunately I
haven't manage to find the conditions xml file used for the
computations. Does anyone have it, so that I can use it to set up my
*Floquet analysis*? I have doubts as to how a sequence of snapshots
along a period are loaded and also about the differences between using
Arpack or modified Arnoldi, among other issues. I would be very greatful
if someone can send me an conditions file exemplifying the
implementation of Floquet analysis. Many thanks in advance.
Cheers,
Fernando Mellibovsky