Large scale circulation in turbulent Rayleigh-Benard convection of liquid sodium in cylindrical cell

In agreement with a recent experimental study by Xi et. al. [1], we also observed the sloshing mode of the large scale circulation (LSC) in our experimental investigation of turbulent Rayleigh-Benard convection of liquid sodium in a cylindrical cell of aspect ratio one. The Rayleigh and Prandtl numb...

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Bibliographic Details
Published in:Journal of physics. Conference series 2018-11, Vol.1128 (1), p.12019
Main Authors: Mamykin, A D, Kolesnichenko, I V, Pavlinov, A M, Khalilov, R I
Format: Article
Language:English
Subjects:
Aspect ratio
Cross correlation
Fluid flow
Liquid sodium
Rayleigh-Benard convection
Reynolds number
Sodium
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Summary:In agreement with a recent experimental study by Xi et. al. [1], we also observed the sloshing mode of the large scale circulation (LSC) in our experimental investigation of turbulent Rayleigh-Benard convection of liquid sodium in a cylindrical cell of aspect ratio one. The Rayleigh and Prandtl numbers vary within the range of (0.5 - 2.6)·107 and (8.7 - 9.9)·10−3 respectively. The characteristic times and corresponding Reynolds numbers of the general and sloshing modes of global circulation were estimated by analyzing the cross correlations of temperature oscillations and by determining the locations of peaks on the spectra of temperature fluctuations.
ISSN:1742-6588
1742-6596
DOI:10.1088/1742-6596/1128/1/012019