Connection between full-lifetime and breakdown of puffs in transitional pipe flows

Mina Nishi, Özgür Ertunç, Antonio Delgado

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Citation (Scopus)

Abstract

Puff splitting was studied by direct measurement of the full-lifetime (LTf ull ) of transitional structures (puffs) in low Reynolds number pipe flows. During the investigations, a fully developed laminar pipe flow was triggered by an iris diaphragm with pre-defined amplitude and lapse time and the evolution of puffs was monitored by the transients of pressure drop along the pipe and the hot wire anemometry at the pipe exit. Those complementary measurements showed that a single puff favors to breakdown into two or more (splitting) puffs and later into slug-like puffs at Re ≈ 2300, where they are expected to have infinite LTfull.

Original languageEnglish
Title of host publication7th IUTAM Symposium on Laminar-Turbulent Transition - Proceedings of the 7th IUTAM Symposium on Laminar-Turbulent Transition
PublisherSpringer Verlag
Pages537-540
Number of pages4
ISBN (Print)9789048137220
DOIs
Publication statusPublished - 2010
Event7th IUTAM Symposium on Laminar-Turbulent Transition - Stockholm, Sweden
Duration: 2009 Jun 232009 Jun 26

Publication series

NameIUTAM Bookseries
Volume18
ISSN (Print)1875-3507

Other

Other7th IUTAM Symposium on Laminar-Turbulent Transition
CountrySweden
CityStockholm
Period09/6/2309/6/26

ASJC Scopus subject areas

  • Civil and Structural Engineering
  • Automotive Engineering
  • Aerospace Engineering
  • Acoustics and Ultrasonics
  • Mechanical Engineering

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