Isotropic Turbulence
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Isotropic turbulence is an idealised turbulent state in which the turbulent fluctuations are statistically uniform in all directions. It can be thought of as turbulent flow far away from boundaries and thus serves as a useful simplification in order to facilitate the study of fundamental properties of turbulent flows.
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Chaotic properties of a turbulent isotropic fluid
By tracking the divergence of two initially close trajectories in phase space of forced turbulence, the relation between the maximal Lyapunov exponent λ, and the Reynolds number Re is measured using direct numerical ... 
Sudden relaminarisation and lifetimes in forced isotropic turbulence
We demonstrate an unexpected connection between isotropic turbulence and wallbounded shear flows. We perform direct numerical simulations of isotropic turbulence forced at large scales at moderate Reynolds numbers and ... 
Selforganization and transition to turbulence in isotropic fluid motion driven by negative damping at low wavenumbers
We observe a symmetrybreaking transition from a turbulent to a selforganized state in direct numerical simulation of the NavierStokes equation at very low Reynolds number. In this selforganised state the kinetic energy ...