Rough-conduit flows and the existence of fully developed turbulence
Fluid Dynamics
2009-11-11 v1
Abstract
It is widely believed that at high Reynolds number (Re) all turbulent flows approach a state of "fully developed turbulence" defined by a unique, Re-independent statistics of the velocity fluctuations. Yet direct measurements of the velocity fluctuations have failed to yield clear-cut empirical evidence of the existence of fully developed turbulence. Here we relate the friction coefficient () of rough-conduit flows to the statistics of the velocity fluctuations. In light of experimental measurements of , our results yield unequivocal evidence of the existence of fully developed turbulence.
Keywords
Cite
@article{arxiv.physics/0508088,
title = {Rough-conduit flows and the existence of fully developed turbulence},
author = {G. Gioia and Pinaki Chakraborty and Fabián A. Bombardelli},
journal= {arXiv preprint arXiv:physics/0508088},
year = {2009}
}
Comments
5 pages, 2 figures