5 papers
Closure of two dimensional turbulence: the role of pressure gradients
G. Boffetta, M. Cencini, J. Davoudi
Inverse energy cascade regime of two dimensional turbulence is investigated by means of high resolution numerical simulations. Numerical computations of conditional averages of tra…
Inverse cascade in Charney-Hasegawa-Mima turbulence
G. Boffetta, F. De Lillo, S. Musacchio
The inverse energy cascade in Charney-Hasegawa-Mima turbulence is investigated. Kolmogorov law for the third order velocity structure function is shown to be independent on the Ros…
Chaotic advection and relative dispersion in a convective flow
G. Boffetta, M. Cencini, S. Espa +1
Lagrangian chaos is experimentally investigated in a convective flow by means of Particle Tracking Velocimetry. The Finite Size Lyapunov Exponent analysis is applied to quantify di…
Pair dispersion in synthetic fully developed turbulence
G. Boffetta, A. Celani, A. Crisanti +1
The Lagrangian statistics of relative dispersion in fully developed turbulence is numerically investigated. A scaling range spanning many decades is achieved by generating a synthe…
Kolmogorov's law for two-dimensional electron-magnetohydrodynamic turbulence
A. Celani, R. Prandi, G. Boffetta
The analogue of the Kolmogorov's four-fifths law is derived for two-dimensional, homogeneous, isotropic EMHD turbulence in the energy cascade inertial range. Direct numerical simul…