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arXiv · 1404.3109

Automated detection of coherent Lagrangian vortices in two-dimensional unsteady flows

Daniel Karrasch·Florian Huhn·George Haller
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Abstract

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 develop a fully automated procedure for the detection of such closed orbits in large-scale velocity data sets. We illustrate the power of our method on ocean surface velocities derived from satellite altimetry.

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math.DScs.GRphysics.ao-phphysics.flu-dyn

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Daniel Karrasch, Florian Huhn, George Haller. 2014-10-22. Automated detection of coherent Lagrangian vortices in two-dimensional unsteady flows. https://doi.org/10.1098/rspa.2014.0639

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