Scale invariance and multifractal structure in transitional pipe flow
Dipartimento di Ingegneria e Fisica dell'Ambiente, Università della
Basilicata, Via della Tecnica 3, 85100 Potenza, Italy
Accepted: November 1996
Laser velocimetry measurements are presented for transitional pipe. It is shown that a) scaling phenomena appear well before the transition to fully developed turbulence is completed, b) multifractal structures are not a characteristic of fully developed turbulence, but they are already present at Reynolds numbers as low as 1500.
PACS: 05.40.+j – Fluctuation phenomena, random processes, and Brownian motion / 47.20.-k – Hydrodynamic stability / 47.27.-i – Turbulent flows, convection, and heat transfer
© EDP Sciences, 1996