Vortex ring interaction with a layer of polymeric fluid*

Numerical simulations of laminar vortex rings interacting with a layer of polymeric fluid were performed. The results show that when ring-polymer interaction occurs, the flow kinetic energy decreases while enstrophy and dissipation increase. Detailed analysis of the flow reveals that elastic forces act to counter the motion of the ring. Future work will focus on identifying the key non-dimensional parameters, such as the Weissenberg number, that govern this phenomenon.