Lagrangian tracers on a surface flow: the role of time correlations
arXiv:nlin/0408031 · doi:10.1103/PhysRevLett.93.134501
Abstract
Finite time correlations of the velocity in a surface flow are found to be important for the formation of clusters of Lagrangian tracers. The degree of clustering characterized by the Lyapunov spectrum of the flow is numerically shown to be in qualitative agreement with the predictions for the white-in-time compressible Kraichnan flow, but to deviate quantitatively. For intermediate values of compressibility the clustering is surprisingly weakened by time correlations.
4 pages, 5 figures, to be published in PRL
References in corpus (8)
- Particles and fields in fluid turbulence
- Fractal clustering of inertial particles in random flows
- The path-coalescence transition and its applications
- The clustering instability of inertial particles spatial distribution in turbulent flows
- Turbulence and passive scalar transport in a free-slip surface
- Clustering dynamics of Lagrangian tracers in free-surface flows
- Turbulence in a free surface
- Dispersion of tracer particles in a compressible flow
Cited by in corpus (27)
- Statistical models for spatial patterns of heavy particles in turbulence
- Population genetics in compressible flows
- Population dynamics at high Reynolds number
- Lagrangian views on turbulent mixing of passive scalars
- Population dynamics in compressible flows
- Power-law distributions of particle concentration in free-surface flows
- Phototactic Clustering of Swimming Micro-organisms in a Turbulent Velocity Field
- Test of the Fluctuation Relation in lagrangian turbulence on a free surface
- Time-Evolution of a Fractal Distribution: Particle Concentrations in Free-Surface Turbulence
- Inertial particles driven by a telegraph noise
- Faraday-waves contact-line shear gradient induces streaming flow and tracers' self-organization: from rotating rings to spiral galaxy-like patterns
- Multifractal clustering of passive tracers on a surface flow
- Spatial population genetics with fluid flow
- Measurement of entropy production rate in compressible turbulence
- Clustering of floating tracers in weakly divergent velocity fields
- Lyapunov exponents for particles advected in compressible random velocity fields at small and large Kubo numbers
- Statistics of single and multiple floaters in experiments of surface wave turbulence
- Stochastic processes in turbulent transport
- Particle dispersion and clustering in surface ocean turbulence with ageostrophic dynamics
- Weak-strong clustering transition in renewing compressible flows
- Accumulated densities of sedimenting particles in turbulent flows
- Oceanic frontal divergence alters phytoplankton competition and distribution
- Decorrelating a compressible turbulent flow: an experiment
- Impact of ageostrophic dynamics on the predictability of Lagrangian trajectories in surface-ocean turbulence
- Fluctuations of separation of trajectories in chaos and correlation dimension
- Surface waves enhance particle dispersion
- Where surface physics and fluid dynamics meet: rupture of an amphiphile layer by fluid flow