Measurements of frequencies and spatial correlations of coherent structures in rod bundle flows

F. Baratto, S. C.C. Bailey, S. Tavoularis

Research output: Contribution to journalArticlepeer-review

49 Scopus citations


Cross-wire anemometry was used to identify and characterize coherent flow pulsations in isothermal air flow near the gap regions of a five-rod bundle with a design pitch-to-diameter ratio of 1.149 and contained in a quasi-trapezoidal duct. It was confirmed that such pulsations are quasi-periodic and contribute significantly to the velocity fluctuations across the gap. The frequency of pulsations was found to decrease with diminishing rod-wall gap size in the range between 0.015D and 0.250D, where D is the rod diameter. The pulsations in a rod-wall gap and an adjacent rod-rod gap were strongly coupled and occurred at the same frequency as one rod was displaced towards the duct wall.

Original languageEnglish
Pages (from-to)1830-1837
Number of pages8
JournalNuclear Engineering and Design
Issue number17
StatePublished - Sep 2006

Bibliographical note

Funding Information:
This research was supported by the Natural Sciences and Engineering Research Council of Canada.

ASJC Scopus subject areas

  • Nuclear and High Energy Physics
  • Nuclear Energy and Engineering
  • General Materials Science
  • Safety, Risk, Reliability and Quality
  • Waste Management and Disposal
  • Mechanical Engineering


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