From turbulence to deterministic chaos in freely decaying fluid dynamics

Abstract

The transition from hard/soft turbulence to deterministic chaos in freely decaying fluid dynamics (incompressible and compressible) has been studied using the results of laboratory measurements and numerical simulations. The notion of distributed chaos has been applied in order to quantify differences in the intermediate regimes appearing during free decay when hard/soft turbulence is eventually decaying to the state of deterministic chaos. Free decay in magnetohydrodynamics has been also briefly discussed in this context (with an application to the results of measurements in the solar photosphere).