Phys. Rev. Lett. 96, 044503 (2006) [4 pages]Roughness-Induced Critical Phenomena in a Turbulent FlowReceived 16 September 2005; published 30 January 2006 I present empirical evidence that turbulent flows are closely analogous to critical phenomena, from a reanalysis of friction factor measurements in rough pipes. The data collapse found here corresponds to Widom scaling near critical points, and implies that a full understanding of turbulence requires explicit accounting for boundary roughness. © 2006 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevLett.96.044503
DOI:
10.1103/PhysRevLett.96.044503
PACS:
47.27.Jv, 05.70.Jk, 47.27.nb, 89.75.Da
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