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

50 Scopus citations

Abstract

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
Volume236
Issue number17
DOIs
StatePublished - Sep 2006

Bibliographical note

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

Funding

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

FundersFunder number
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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