English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Plus monthly

Global: Zendy Tools annual

Global: Zendy Tools monthly

Global: Zendy Free Plan

We use recent developments in the theory of finite-time dynamical systems toobjectively locate the material boundaries of coherent vortices intwo-dimensional Navier--Stokes turbulence. We show that these boundaries areoptimal in the sense that any closed curve in their exterior will losecoherence under material advection. Through a detailed comparison, we find thatother available Eulerian and Lagrangian techniques significantly underestimatethe size of each coherent vortex.

How coherent are the vortices of two-dimensional turbulence?