Coherence of velocity fluctuations in turbulent flows
Fluid Dynamics
2022-01-19 v1
Abstract
We investigate the spatio-temporal quantity of coherence for turbulent velocity fluctuations at spatial distances of the order or larger than the integral length scale . Using controlled laboratory experiments, an exponential decay as a function of distance is observed with a decay rate which depends on the flow properties. The same law is observed in two different flows indicating that it can be a generic property of turbulent flows.
Keywords
Cite
@article{arxiv.2107.11855,
title = {Coherence of velocity fluctuations in turbulent flows},
author = {G. Prabhudesai and S. Perrard and F. Pétrélis and S. Fauve},
journal= {arXiv preprint arXiv:2107.11855},
year = {2022}
}