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Optimal paths to transition in a duct

Bottaro, A (UniversitÓ di Genova)
Tuesday 09 September 2008, 10:20-10:40

Seminar Room 1, Newton Institute


It is accepted that self sustaining states exist in duct flow past a threshold value of the Reynolds number, which rely on the nonlinear coupling between vortices, streaks and travelling waves. In this work we have devised an optimisation strategy that aims at maximising the energy of the travelling disturbance wave, and thus at enhancing the nonlinear terms that feed back onto vortices and streaks.


[ppt ] [avi ]


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