The decay of homogeneous anisotropic turbulence

Details The decay of homogeneous anisotropic turbulence The decay of homogeneous anisotropic turbulence

2003-01-28

arxiv.org/abs/nlin/0301040v1

Physics of Fluids 15 8 (2003) 2105

Nonlinear Sciences

Chaotic Dynamics

9 pages, 17 figures

Scientific paper

10.1063/1.1582859

We present the results of a numerical investigation of three-dimensional decaying turbulence with statistically homogeneous and anisotropic initial conditions. We show that at large times, in the inertial range of scales: (i) isotropic velocity fluctuations decay self-similarly at an algebraic rate which can be obtained by dimensional arguments; (ii) the ratio of anisotropic to isotropic fluctuations of a given intensity falls off in time as a power law, with an exponent approximately independent of the strength of the fluctuation; (iii) the decay of anisotropic fluctuations is not self-similar, their statistics becoming more and more intermittent as time elapses. We also investigate the early stages of the decay. The different short-time behavior observed in two experiments differing by the phase organization of their initial conditions gives a new hunch on the degree of universality of small-scale turbulence statistics, i.e. its independence of the conditions at large scales.

Affiliated with

Also associated with

No associations

Rating

The decay of homogeneous anisotropic turbulence does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with The decay of homogeneous anisotropic turbulence, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and The decay of homogeneous anisotropic turbulence will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-317389