Melting of a nonequilibrium vortex crystal in a fluid film with polymers: Elastic versus fluid turbulence
Melting of a nonequilibrium vortex crystal in a fluid film with polymers: Elastic versus fluid turbulence
We perform a direct numerical simulation (DNS) of the forced, incompressible two-dimensional Navier-Stokes equation coupled with the FENE-P equations for the polymer-conformation tensor. The forcing is such that, without polymers and at low Reynolds numbers $\mbox{Re}$, the film attains a steady state that is a square lattice of vortices and …