Intermittency of velocity time increments in turbulence
arXiv:cond-mat/0507060 · doi:10.1103/PhysRevLett.95.064501
Abstract
We analyze the statistics of turbulent velocity fluctuations in the time domain. Three cases are computed numerically and compared: (i) the time traces of Lagrangian fluid particles in a (3D) turbulent flow (referred to as the "dynamic" case); (ii) the time evolution of tracers advected by a frozen turbulent field (the "static" case), and (iii) the evolution in time of the velocity recorded at a fixed location in an evolving Eulerian velocity field, as it would be measured by a local probe (referred to as the "virtual probe" case). We observe that the static case and the virtual probe cases share many properties with Eulerian velocity statistics. The dynamic (Lagrangian) case is clearly different; it bears the signature of the global dynamics of the flow.
5 pages, 3 figures, to appear in PRL
References in corpus (10)
- Fluid Particle Accelerations in Fully Developed Turbulence
- Measurement of Particle Accelerations in Fully Developed Turbulence
- Measurement of Lagrangian velocity in fully developed turbulence
- Multifractal statistics of Lagrangian velocity and acceleration in turbulence
- Long time correlations in Lagrangian dynamics: a key to intermittency in turbulence
- Some Aspects of Thermal Leptogenesis
- Lagrangian Velocity Statistics in Turbulent Flows: Effects of Dissipation
- Generalizing the wavelet-based multifractal formalism to vector-valued random fields: application to turbulent velocity and vorticity 3D numerical data
- Anomalous Scaling and Structure Instability in Three-Dimensional Passive Scalar Turbulence
- One-dimensional Langevin models of fluid particle acceleration in developed turbulence
Cited by in corpus (21)
- Lagrangian Structure Functions in Turbulence: A Quantitative Comparison between Experiment and Direct Numerical Simulation
- Observation of intermittency in wave turbulence
- Intermittency of interstellar turbulence: extreme velocity-shears and CO emission on milliparsec scale
- Reconnection Dynamics for Quantized Vortices
- Lagrangian single particle turbulent statistics through the Hilbert-Huang Transform
- Impact of the floating-point precision and interpolation scheme on the results of DNS of turbulence by pseudo-spectral codes
- Global fluctuations in physical systems: a subtle interplay between sum and extreme value statistics
- Regularized fractional Ornstein-Uhlenbeck processes, and their relevance to the modeling of fluid turbulence
- Intermittency of surface layer wind velocity series in the mesoscale range
- The energy flux spectrum of internal waves generated by turbulent convection
- Spatiotemporal velocity-velocity correlation function in fully developed turbulence
- Functional renormalisation group for turbulence
- Breaking of scale invariance in the time dependence of correlation functions in isotropic and homogeneous turbulence
- Joint statistics of acceleration and vorticity in fully developed turbulence
- Discrepancy between sub-critical and fast rupture roughness: a cumulant analysis
- Spatio-temporal correlations in 3D homogeneous isotropic turbulence
- Flow of Spatiotemporal Turbulentlike Random Fields
- Identifying the multifractal set on which energy dissipates in a turbulent Navier-Stokes fluid
- Space-time statistics of a linear dynamical energy cascade model
- Wrapping and unwrapping multifractal fields
- A spatio-temporal random synthetic turbulent velocity field: The underlying Gaussian structure