Extracting Order from Disorder : Periodic Orbits Buried in Fluid Turbulence

Rich Kerswell
DAMTP, University of Cambridge

Tuesday, June 25, 2019
5:15 p.m. — room Jaures (29 rue d’Ulm)

Ideas from dynamical systems have recently provided fresh insight into transitional and weakly turbulent flows. Viewing such flows as a trajectory through a phase space littered with simple invariant (’exact’) solutions and their stable and unstable manifolds has proved a fruitful way of understanding such flows. Central to this approach is identifying such exact solutions directly from turbulent flow data. I will discuss amongst other things recent attempts to harness Koopman operator theory in this quest.

JPEG - 6.3 ko