5 papers · 1 filter
The prediction of extreme uncertainty-production events in three-dimensional Navier-Stokes turbulence
Jin Ge, Joran Rolland, John Christos Vassilicos
We investigate the exponential growth of uncertainty energy in 3D Navier-Stokes turbulence, emphasising the intermittent and highly localized amplification/production of uncertaint…
Characterisation of a multistable turbulent wake: application of an improved regime identification with analytical model training
Ariane Barlet, Pierre Bragança, Christophe Cuvier +1
This article presents the experimental study and the modelling of the multistable jet in the wake of two side by side square bars separated by a distance at Reynolds number $R=…
Eulerian-Lagrangian scaling of the Lyapunov exponent in homogeneous turbulence
Jin Ge, Joran Rolland, John Christos Vassilicos
We present a heuristic derivation of the maximal Lyapunov exponent of homogeneous turbulence which yields two new relations, a sweeping relation and the scaling of the uncerta…
The interscale behaviour of uncertainty in three-dimensional Navier-Stokes turbulence
Jin Ge, Joran Rolland, John Christos Vassilicos
We derive the scale-by-scale uncertainty energy budget equation and demonstrate theoretically and computationally the presence of a self-similar equilibrium cascade of decorrelatio…
Does rare, noise-induced, bypass transition in plane Couette flow bypass instantons ?
Joran Rolland
We study rare noise induced paths that go all the way from stable laminar to transitional turbulent plane Couette flow and investigate whether these paths share the properties of c…