Angular multiscale statistics of Lagrangian trajectories in turbulence
Fluid Dynamics
2015-02-19 v1
Abstract
The angle between subsequent particle displacement increments is evaluated as a function of the timelag in isotropic turbulence. It is shown that the evolution of this angle contains two well-defined power-laws, reflecting the multi-scale dynamics of high-Reynolds number turbulence. The proba-bility density function of the directional change is shown to be self-similar and well approximated by an analytically derived model assuming Gaussianity and independence of the velocity and the Lagrangian acceleration.
Cite
@article{arxiv.1502.05358,
title = {Angular multiscale statistics of Lagrangian trajectories in turbulence},
author = {Wouter Bos and Benjamin Kadoch and Kai Schneider},
journal= {arXiv preprint arXiv:1502.05358},
year = {2015}
}