3 papers
physics.flu-dyn2026
Patchy Polymeric Scalar Turbulence
Rahul K. Singh, Marco E. Rosti
Turbulent polymeric flows show strong deviations from Kolomogorov-like behaviour resulting from more complex dynamics compared to Newtonian turbulence. We now study the nature of m…
physics.flu-dyn2025
The invariant rate of energy extraction by polymers in turbulence
Alessandro Chiarini, Rahul K. Singh, Marco E. Rosti
Polymeric turbulence, flows of fluids with dilute polymer additives at high Reynolds numbers, exhibits striking deviations from the Kolmogorovean behaviour of Newtonian turbulence.…
physics.flu-dyn2025
Energy, enstrophy and helicity transfers in polymeric turbulence
Alessandro Chiarini, Rahul K. Singh, Marco E. Rosti
We characterise the scale-by-scale transfers of energy, enstrophy and helicity in homogeneous and isotropic polymeric turbulence using direct numerical simulations. The microscale…