{ "id": "2107.11855", "version": "v1", "published": "2021-07-25T17:38:32.000Z", "updated": "2021-07-25T17:38:32.000Z", "title": "Coherence of velocity fluctuations in turbulent flows", "authors": [ "G. Prabhudesai", "S. Perrard", "F. Pétrélis", "S. Fauve" ], "categories": [ "physics.flu-dyn" ], "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 $l_{0}$. 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.", "revisions": [ { "version": "v1", "updated": "2021-07-25T17:38:32.000Z" } ], "analyses": { "keywords": [ "turbulent flows", "turbulent velocity fluctuations", "integral length scale", "generic property", "spatial distances" ], "note": { "typesetting": "TeX", "pages": 0, "language": "en", "license": "arXiv", "status": "editable" } } }