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

F. Baratto; S. C.C. Bailey; S. Tavoularis

doi:10.1016/j.nucengdes.2005.12.009

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 journal › Article › peer-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 language	English
Pages (from-to)	1830-1837
Number of pages	8
Journal	Nuclear Engineering and Design
Volume	236
Issue number	17
DOIs	https://doi.org/10.1016/j.nucengdes.2005.12.009
State	Published - 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.

Funders	Funder 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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10.1016/j.nucengdes.2005.12.009

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title = "Measurements of frequencies and spatial correlations of coherent structures in rod bundle flows",

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.",

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AU - Bailey, S. C.C.

AU - Tavoularis, S.

N1 - Funding Information: This research was supported by the Natural Sciences and Engineering Research Council of Canada.

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Y1 - 2006/9

N2 - 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.

AB - 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.

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JO - Nuclear Engineering and Design

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

Abstract

Bibliographical note

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ASJC Scopus subject areas

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