スガ　カズヒコ   Kazuhiko Suga   須賀　一彦    所属   追手門学院大学  理工学部 機械工学科    職種   教授
言語種別	英語
発行・発表の年月	2023
形態種別	外国学会誌（その他）
査読	査読あり
標題	Direct numerical simulation for turbulent heat transfer in Taylor-Couette flows with a stationary grooved outer cylinder
執筆形態	共著・編著（代表編著を除く）
掲載誌名	Proceedings of the International Symposium on Turbulence, Heat and Mass Transfer
掲載区分	国外
出版社・発行元	Begell House
担当区分	最終著者
著者・共著者	K. Takeda,Y. Kuwata,M. Kaneda,K. Suga
概要	To describe the effects of grooved stators on torque and heat transfer performance of drive motors, we perform direct numerical simulations by the lattice Boltzmann method. Taylor-Couette (TC) turbulent flows with an axially grooved stationary cylinder are considered as the modelled motor flows. The radius ratio of the present TC flow configuration is approximately 0.95 and the simulated Reynolds numbers are up to 13000. The characteristics of torque and heat transfer are discussed comparing the cases with and without grooves. It is suggested that the scaling exponent of the Taylor number for the dimensionless torque increases by the grooves depending on the groove number while the scaling exponent for Nusselt number doesn't vary significantly.
ISSN	2642-5629/2377-2816