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Spectral Early-Warning Signals for Sudden Changes in Time-Dependent Flow Patterns
2021
Fluids
Lagrangian coherent sets are known to crucially determine transport and mixing processes in non-autonomous flows. Prominent examples include vortices and jets in geophysical fluid flows. Coherent sets can be identified computationally by a probabilistic transfer-operator-based approach within a set-oriented numerical framework. Here, we study sudden changes in flow patterns that correspond to bifurcations of coherent sets. Significant changes in the spectral properties of a numerical transfer
doi:10.3390/fluids6020049
fatcat:qjo277nexrgqhih2v7glg5drcq