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	2011
形態種別	外国学会誌（その他）
査読	査読あり
標題	Quadrant analyses of separating and reattaching turbulence over rib-mounted porous walls
執筆形態	共著・編著（代表編著を除く）
掲載誌名	13TH EUROPEAN TURBULENCE CONFERENCE (ETC13): WALL-BOUNDED FLOWS AND CONTROL OF TURBULENCE
掲載区分	国外
出版社・発行元	IOP PUBLISHING LTD
巻・号・頁	318(SECTION 2)
著者・共著者	Motoyasu Mori,Masayuki Kaneda,Kazuhiko Suga
概要	In order to understand the effect of the wall permeability on the turbulent vortex structure in a recirculating flow near a porous wall, based on the PIV experimental data of rib-mounted porous wall flows, quadrant and quadrant-hole analyses of the Reynolds shear stress are performed. The investigated flow fields are turbulent flows in rib-mounted channels whose bottom walls are made of porous media. Three kinds of porous media are used. They have almost the same porosity but different permeability. From the discussions through the analyses, as the wall permeability increases each quadrant event of the Reynolds shear stress tends to be damped in the region behind the rib and the vortex motions having stronger vertical fluctuating energy appear. It is considered that this vertical fluctuation comes from a perturbation mode which is similar to that induces the Karman vortex.
DOI	10.1088/1742-6596/318/2/022015
ISSN	1742-6588
Put Code(ORCID)	41807930
PermalinkURL	http://www.scopus.com/inward/record.url?eid=2-s2.0-84856320024&partnerID=MN8TOARS
researchmap用URL	http://orcid.org/0000-0001-9313-1816