Eulerian–Lagrangian relations in decaying two-dimensional incompressible Navier–Stokes fluids across initial vorticity packing and Reynolds number
A recent study [Phys. Fluids 38, 045159 (2026)] showed that, at a fixed high Reynolds number (Re), variations in the initial vorticity packing fraction (VPF) were associated with a general Eulerian–Lagrangian relationship during the inverse-cascade regime and a more direct correspondence between Eulerian statistical or...