Unsteady Three-Dimensional Behavior of Natural Convection in Horizontal Annulus, (IV) Application of LES to Turbulent Natural Convection

Noboru Taniguchi; Yukinori Usui; Masahiro Furuya; Yasutomi Miki; Kenji Fukuda; Syu Hasegawa

doi:10.3327/jaesj.34.996

Unsteady Three-Dimensional Behavior of Natural Convection in Horizontal Annulus, (IV) Application of LES to Turbulent Natural Convection

Noboru Taniguchi, Yukinori Usui, Masahiro Furuya, Yasutomi Miki, Kenji Fukuda, Syu Hasegawa

Research output: Contribution to journal › Article › peer-review

Abstract

The large eddy simulation (LES) method is applied to turbulent natural convection in a horizontal concentric annulus. Numerical results are obtained for Rayleigh numbers based on the gap width from 2.51 ×10⁶ to 1.18 ×10⁹. These results are compared with other researchers' experimental data and the validity of LES is investigated. It is found that LES is very useful even if at high Ra, at which the DNS is not applicable. However, in the cases where temperature differences between cylinders are large, effect of dependency of physical properties on temperature is not negligible, which causes the poor coincidence betwenn the experiments and the numerical results.

Original language	English
Pages (from-to)	996-1004
Number of pages	9
Journal	Nippon Genshiryoku Gakkaishi/Journal of the Atomic Energy Society of Japan
Volume	34
Issue number	10
DOIs	https://doi.org/10.3327/jaesj.34.996
Publication status	Published - 1992
Externally published	Yes

Keywords

Rayleigh number
Smagorinsky constant
accuracy
comparative evaluations
concentric horizontal annulus
energy spectra
experimental data
finite difference method
large eddy simulation
large eddy simulation
temperature dependence
turbulent natural convection

ASJC Scopus subject areas

Nuclear Energy and Engineering

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10.3327/jaesj.34.996

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Unsteady Three-Dimensional Behavior of Natural Convection in Horizontal Annulus, (IV) Application of LES to Turbulent Natural Convection. / Taniguchi, Noboru; Usui, Yukinori; Furuya, Masahiro et al.

In: Nippon Genshiryoku Gakkaishi/Journal of the Atomic Energy Society of Japan, Vol. 34, No. 10, 1992, p. 996-1004.

Research output: Contribution to journal › Article › peer-review

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title = "Unsteady Three-Dimensional Behavior of Natural Convection in Horizontal Annulus, (IV) Application of LES to Turbulent Natural Convection",

abstract = "The large eddy simulation (LES) method is applied to turbulent natural convection in a horizontal concentric annulus. Numerical results are obtained for Rayleigh numbers based on the gap width from 2.51 ×106 to 1.18 ×109. These results are compared with other researchers' experimental data and the validity of LES is investigated. It is found that LES is very useful even if at high Ra, at which the DNS is not applicable. However, in the cases where temperature differences between cylinders are large, effect of dependency of physical properties on temperature is not negligible, which causes the poor coincidence betwenn the experiments and the numerical results.",

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author = "Noboru Taniguchi and Yukinori Usui and Masahiro Furuya and Yasutomi Miki and Kenji Fukuda and Syu Hasegawa",

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AU - Furuya, Masahiro

AU - Miki, Yasutomi

AU - Fukuda, Kenji

AU - Hasegawa, Syu

PY - 1992

Y1 - 1992

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Unsteady Three-Dimensional Behavior of Natural Convection in Horizontal Annulus, (IV) Application of LES to Turbulent Natural Convection

Abstract

Keywords

ASJC Scopus subject areas

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