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physics.flu-dyn2019
Fast and robust computation of coherent Lagrangian vortices on very large two-dimensional domains
Daniel Karrasch, Nathanael Schilling
We describe a new method for computing coherent Lagrangian vortices in two-dimensional flows according to any of the following approaches: black-hole vortices [Haller & Beron-Vera,…
physics.flu-dyn2019
Barriers to the Transport of Diffusive Scalars in Compressible Flows
George Haller, Daniel Karrasch, Florian Kogelbauer
Our recent work identifies material surfaces in incompressible flows that extremize the transport of an arbitrary, weakly diffusive scalar field relative to neighboring surfaces. S…