1.
Phys Rev Lett
; 84(22): 5134-7, 2000 May 29.
Article
in English
| MEDLINE
| ID: mdl-10990885
ABSTRACT
We investigate the effect of drag force on the enstrophy cascade of two-dimensional Navier-Stokes turbulence. We find a power law decrease of the energy wave number (k) spectrum that is faster than the classical (no-drag) prediction of k(-3). It is shown that the enstrophy cascade with drag can be analyzed by making use of a previous theory for finite lifetime passive scalars advected by a Lagrangian chaotic fluid flow. Using this we relate the power law exponent of the energy wave number spectrum to the distribution of finite time Lyapunov exponents and the drag coefficient.
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3.
Phys Rev E Stat Phys Plasmas Fluids Relat Interdiscip Topics
; 51(1): 325-331, 1995 Jan.
Article
in English
| MEDLINE
| ID: mdl-9962649
4.
Phys Rev E Stat Phys Plasmas Fluids Relat Interdiscip Topics
; 49(3): 2062-2069, 1994 Mar.
Article
in English
| MEDLINE
| ID: mdl-9961447
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