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Attraction-Based Computation of Hyperbolic Lagrangian Coherent Structures
Daniel Karrasch, Mohammad Farazmand, George Haller
Recent advances enable the simultaneous computation of both attracting and repelling families of Lagrangian Coherent Structures (LCS) at the same initial or final time of interest.…
Automated detection of coherent Lagrangian vortices in two-dimensional unsteady flows
Daniel Karrasch, Florian Huhn, George Haller
Coherent boundaries of Lagrangian vortices in fluid flows have recently been identified as closed orbits of line fields associated with the Cauchy-Green strain tensor. Here we deve…
How coherent are the vortices of two-dimensional turbulence?
Mohammad Farazmand, George Haller
We use recent developments in the theory of finite-time dynamical systems to objectively locate the material boundaries of coherent vortices in two-dimensional Navier--Stokes turbu…