Exact travelling wave solutions in viscoelastic channel flow

Richard Kerswell, Jacob Page & Yves Dubief
Elasto-inertial turbulence (EIT) is a new, two-dimensional chaotic ow state observed in polymer solutions with possible connections to inertialess elastic turbulence and drag-reduced Newtonian turbulence. In this Letter, we argue that the origins of EIT are fundamentally di erent from Newtonian turbulence by nding a dynamical connection between EIT and an elasto-inertial linear instability recently found at high Weissenberg numbers (Garg et al. Phys. Rev. Lett. 121, 024502, 2018).
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