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

研究成果査読

抄録

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.

本文言語English
ページ(範囲)996-1004
ページ数9
ジャーナルNippon Genshiryoku Gakkaishi/Journal of the Atomic Energy Society of Japan
34
10
DOI
出版ステータスPublished - 1992
外部発表はい

ASJC Scopus subject areas

  • 原子力エネルギーおよび原子力工学

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