5 papers
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…
Passive scalar cascade in the intermediate layer of turbulent channel flow for
Emanuele Gallorini, Shingo Motoki, Genta Kawahara +1
Similarities and differences between Kolmogorov scale-by-scale equilibria/non-equilibria for velocity and scalar fields are investigated in the intermediate layer of a fully develo…
Navier-Stokes-driven analysis of mean and fluctuating wall shear stress in turbulent channel flow
Le Yin, Yongyun Hwang, John Christos Vassilicos
We propose a Navier-Stokes-driven analysis of the mean and fluctuating wall shear stress (WSS) applied to turbulent channel flow data from direct numerical simulations at friction…
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…