Numerical renormalization group of vortex aggregation in two-dimensional decaying turbulence: the role of three-body interactions
Phys Rev E Stat Phys Plasmas Fluids Relat Interdiscip Topics
; 61(6 Pt A): 6644-53, 2000 Jun.
Article
em En
| MEDLINE
| ID: mdl-11088345
ABSTRACT
We introduce a numerical renormalization group procedure which permits long-time simulations of vortex dynamics and coalescence in a two-dimensional turbulent decaying fluid. The number of vortices decreases as N approximately t(-xi), with xi approximately 1 instead of the value xi=4/3 predicted by a naive kinetic theory. For short time, we find an effective exponent xi approximately 0.7 consistent with previous simulations and experiments. We show that the mean square displacement of surviving vortices grows as
Buscar no Google
Coleções:
01-internacional
Base de dados:
MEDLINE
Idioma:
En
Revista:
Phys Rev E Stat Phys Plasmas Fluids Relat Interdiscip Topics
Assunto da revista:
MEDICINA
Ano de publicação:
2000
Tipo de documento:
Article
País de afiliação:
França