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Hello Nektar++ community,

 

I recently have been running an adjoint stability simulation and am interested in the vortex shedding mode.

 

From the Strouhal number found in the literature I know the eigenmode of interest is the one highlighted below with a magnitude of 0.97 and a frequency of 0.731.

 

I have tried using a Krylov space of 40 and instructing Nektar to wait for the 20 modes with the highest magnitude to converge but I have no luck in getting the specific mode of interest to converge.

 

I was wondering whether there was some way I could narrow down the convergence criteria so the specific mode I need will converge, rather than these other 20 modes I’m getting. I have tried to also converge modes by the highest imaginary part but I can’t seem to get the specific mode I need.

 

 

Thank you,

Matt Duran

PhD student

University of Central Florida

 

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