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	2014/10
形態種別	外国学術誌（その他）
査読	査読あり
標題	Development and application of a multi-scale k-epsilon model for turbulent porous medium flows
執筆形態	共著・編著（代表編著を除く）
掲載誌名	INTERNATIONAL JOURNAL OF HEAT AND FLUID FLOW
掲載区分	国外
出版社・発行元	ELSEVIER SCIENCE INC
巻・号・頁	49(C),pp.135-150
担当区分	責任著者
著者・共著者	Yusuke Kuwata,Kazuhiko Suga,Yota Sakurai
概要	A multi-scale k-epsilon eddy viscosity model for turbulence in porous media is developed. When the double averaging is applied to the momentum equation, the dispersive covariance, the macro-scale and micro-scale Reynolds stresses appear and need modelling to close the equation. The conventional eddy viscosity modelling is applied to model the second moments for engineering applications. A k-epsilon two-equation eddy viscosity model is employed for obtaining the volume averaged Reynolds stress which consists of the macro-scale and the micro-scale Reynolds stresses. The micro-scale Reynolds stress is also independently modelled and obtained by solving another set of k and epsilon equations, whilst an algebraic model is developed for the dispersive covariance. The presently proposed multi-scale four equations eddy viscosity model is evaluated in developed turbulent flows in homogeneous porous media, porous wall channel flows and porous rib-mounted channel flows with satisfactory accuracy.
DOI	10.1016/j.ijheatfluidflow.2014.02.007
ISSN	0142-727X/1879-2278
Put Code(ORCID)	41807885
PermalinkURL	http://www.scopus.com/inward/record.url?eid=2-s2.0-84926277504&partnerID=MN8TOARS
researchmap用URL	http://orcid.org/0000-0001-9313-1816