Experimental observation of nonlinear traveling waves in turbulent pipe flow

B Hof, CWH van Doorne, J Westerweel, FTM Nieuwstadt, H Faisst, B Eckhardt, H Wedin, RR Kerswell, F Waleffe

Research output: Contribution to journalArticle (Academic Journal)peer-review

329 Citations (Scopus)

Abstract

Transition to turbulence in pipe flow is one of the most fundamental and longest-standing problems in fluid dynamics. Stability theory suggests that the flow remains laminar for all flow rates, but in practice pipe flow becomes turbulent even at moderate speeds. This transition drastically affects the transport efficiency of mass, momentum, and heat. On the basis of the recent discovery of unstable traveling waves in computational studies of the Navier-stokes equations and ideas from dynamical systems theory, a model, for the transition process has been suggested. We report experimental observation of these traveling waves in pipe flow, confirming the proposed transition scenario and suggesting that the dynamics associated with these unstable states may indeed capture the nature of fluid turbulence.
Translated title of the contributionExperimental observation of nonlinear traveling waves in turbulent pipe flow
Original languageEnglish
Pages (from-to)1594 - 1598
Number of pages5
JournalScience
Volume305 (5690)
DOIs
Publication statusPublished - Sep 2004

Bibliographical note

Publisher: American Assoc. for the Advancement of Science
Other identifier: IDS Number: 854GV

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