Elastic turbulence is a chaotic regime that develops in polymer solutions at low inertia as a result of purely elastic instabilities. Discovered by Groisman and Steinberg in 2000, it finds a natural application in microfluidics, where it is used to accelerate mixing. After rewieving the main experimental observations on elastic turbulence, I will present results on a low-dimensional model for this phenomenon, an estimate of its Lyapunov dimension, and the effect of polymer-stress diffusion in numerical simulations. I will conclude by discussing the possibility of generating a chaotic regime analogous to elastic turbulence by using rigid (instead of elastic) polymers.
Link for Live webcast: http://live.icts.res.in/videos/livestreams/page1/