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A dynamical system approach to subcritical transition

Time: Thu 2020-11-05 10.30 - 11.30

Lecturer: Miguel Beneitez (KTH)

Location: FLOW eSeminar (Zoom)

Abstract. Dynamical systems theory has provided a new point of view to understand of bypass transition in simple shear flows, by identifying the boundary between those trajectories approaching laminar and turbulent states in phase space, showing us what flow structures are associated with the evolution of trajectories on this edge of chaos and giving us information regarding the amplitudes needed for disturbances to reach transition. In this presentation we will discuss new questions which arise when translating this knowledge into open boundary layer flows. It is shown that the dynamical picture becomes more complex but that it can also give great insight into the transition process.