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	2013/07
形態種別	外国学術誌（First author）
査読	査読あり
標題	Turbulence characteristics in flows over solid and porous square ribs mounted on porous walls
執筆形態	共著・編著（代表編著を除く）
掲載誌名	Flow, Turbulence and Combustion
掲載区分	国外
巻・号・頁	91(1),pp.19-40
担当区分	筆頭著者,責任著者
著者・共著者	Kazuhiko Suga,Satoshi Tominaga,Motoyasu Mori,Masayuki Kaneda
概要	PIV measurements have been performed for turbulent flows in a rib-mounted channel whose bottom wall is made of a porous layer. The effects of the wall and rib permeability are investigated focusing on the separating and reattaching flows. Three kinds of foamed ceramics are employed as the porous media. They have the same porosity of 0.8 but each permeability is different from the others. Two kinds of square cylinder ribs: an impermeable smooth solid rib or a permeable porous rib which is made of the same porous medium as that for the bottom wall are used. The obtained turbulent velocity fields of the solid rib flows indicate that the turbulent intensity behind the rib becomes weak and the recirculation bubble in the clear channel tends to vanish as the the wall permeability increases. In the porous rib flow, the recirculation and the reattachment point shift downstream and turbulence becomes weaker due to the bleeding flow through the rib.
DOI	10.1007/s10494-013-9452-1
ISSN	1386-6184
Put Code(ORCID)	41807871
PermalinkURL	http://www.scopus.com/inward/record.url?eid=2-s2.0-84879838818&partnerID=MN8TOARS
researchmap用URL	http://orcid.org/0000-0001-9313-1816