Power and Pressure Fluctuations in Elastic Turbulence

Power $P$ fluctuations injected to the system and pressure $p$ fluctuations in a swirling flow of polymer solutions in a wide range of polymer concentrations $c$ were simultaneously measured in elastic turbulence regime. They show non-Gaussian statistics that strongly resemble statistical behavior of $P$ and $p$ in hydrodynamic turbulence. Together with this fact, weak dependence of the statistics of rescaled variables on $c$ may suggest that there are universal mechanisms determining the intermittent statistics of $P$ and $p$. We also show that the study of the statistics of $p$ provides a way to study statistics of the elastic stresses in elastic turbulence otherwise currently unattainable.