タナカ　トシツグ   Toshitsugu Tanaka   田中　敏嗣    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	2015/04
形態種別	論文
査読	査読あり
標題	Hindered settling velocity & structure formation during particle settling by direct numerical simulation
執筆形態	共著・編著（代表編著を除く）
掲載誌名	Procedia Engineering
出版社・発行元	ELSEVIER SCIENCE BV
巻・号・頁	102,pp.1656-1666
担当区分	最終著者,責任著者
著者・共著者	Zaidi A.A,Tsuji T,Tanaka T
概要	Direct numerical simulation is used to study the dynamics of particle settling for Reynolds number from 0.1 to 50 and solid volume fraction from single particle to 0.4. The principle investigations are the effects of Reynolds number and solid volume fraction on average settling velocity, velocity fluctuations and particles structuring during settling. It is observed that average settling velocity deviates from the well-known power law for dilute suspension and moderate range of Reynolds number. Moreover, the increase of velocity fluctuations with domain size saturates and becomes about constant for moderate range of Reynolds numbers in contrast to low Reynolds number in which the fluctuations keep increasing. These behaviors are due to the separated particle pairs which are formed due to inter-particle wake interactions. As the solid volume fraction increases, the smaller inter-particle distances diminish the wake effectsand corresponding particle structures.
DOI	10.1016/j.proeng.2015.01.302
ISSN	1877-7058
Put Code(ORCID)	22660866
PermalinkURL	http://www.scopus.com/inward/record.url?eid=2-s2.0-84950133307&partnerID=MN8TOARS
researchmap用URL	http://orcid.org/0000-0001-6366-2923