Seminar "On Diffusive and Stochastic Transport barriers" by Dr. Florian Kogelbauer


2021年12月7日 (火) 16:00 17:00


Lab1 C016



Dr. Florian Kogelbauer

National Institute of Advanced Industrial Science and Technology, Sendai, Japan



We present a theory of transport extremizers for scalar advection-diffusion equations and its applications to geophysical fluid flow data. Based on a variational principle in conjunction with a singular perturbation analysis of the corresponding PDE, we derive a concentration-independent description of transport barriers as closed trajectories of a dual differential system. This allows us to develop a streamlined numerical scheme for the detection of coherent structures in various flows on the fluid earth such as Agulhas rings.


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